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![Simon Glass](/assets/img/avatar_default.png)
Move this uncommon header out of the common header. Signed-off-by: Simon Glass <sjg@chromium.org>
1635 lines
41 KiB
C
1635 lines
41 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2017 Rockchip Electronics Co., Ltd
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*/
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#include <common.h>
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#include <bitfield.h>
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#include <clk-uclass.h>
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#include <dm.h>
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#include <errno.h>
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#include <log.h>
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#include <malloc.h>
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#include <syscon.h>
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#include <asm/arch-rockchip/clock.h>
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#include <asm/arch-rockchip/cru_px30.h>
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#include <asm/arch-rockchip/hardware.h>
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#include <asm/io.h>
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#include <dm/lists.h>
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#include <dt-bindings/clock/px30-cru.h>
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#include <linux/bitops.h>
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#include <linux/delay.h>
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DECLARE_GLOBAL_DATA_PTR;
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enum {
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VCO_MAX_HZ = 3200U * 1000000,
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VCO_MIN_HZ = 800 * 1000000,
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OUTPUT_MAX_HZ = 3200U * 1000000,
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OUTPUT_MIN_HZ = 24 * 1000000,
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};
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#define PX30_VOP_PLL_LIMIT 600000000
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#define PX30_PLL_RATE(_rate, _refdiv, _fbdiv, _postdiv1, \
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_postdiv2, _dsmpd, _frac) \
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{ \
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.rate = _rate##U, \
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.fbdiv = _fbdiv, \
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.postdiv1 = _postdiv1, \
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.refdiv = _refdiv, \
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.postdiv2 = _postdiv2, \
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.dsmpd = _dsmpd, \
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.frac = _frac, \
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}
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#define PX30_CPUCLK_RATE(_rate, _aclk_div, _pclk_div) \
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{ \
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.rate = _rate##U, \
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.aclk_div = _aclk_div, \
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.pclk_div = _pclk_div, \
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}
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#define DIV_TO_RATE(input_rate, div) ((input_rate) / ((div) + 1))
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#define PX30_CLK_DUMP(_id, _name, _iscru) \
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{ \
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.id = _id, \
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.name = _name, \
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.is_cru = _iscru, \
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}
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static struct pll_rate_table px30_pll_rates[] = {
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/* _mhz, _refdiv, _fbdiv, _postdiv1, _postdiv2, _dsmpd, _frac */
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PX30_PLL_RATE(1200000000, 1, 50, 1, 1, 1, 0),
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PX30_PLL_RATE(1188000000, 2, 99, 1, 1, 1, 0),
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PX30_PLL_RATE(1100000000, 12, 550, 1, 1, 1, 0),
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PX30_PLL_RATE(1008000000, 1, 84, 2, 1, 1, 0),
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PX30_PLL_RATE(1000000000, 6, 500, 2, 1, 1, 0),
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PX30_PLL_RATE(816000000, 1, 68, 2, 1, 1, 0),
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PX30_PLL_RATE(600000000, 1, 75, 3, 1, 1, 0),
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};
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static struct cpu_rate_table px30_cpu_rates[] = {
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PX30_CPUCLK_RATE(1200000000, 1, 5),
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PX30_CPUCLK_RATE(1008000000, 1, 5),
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PX30_CPUCLK_RATE(816000000, 1, 3),
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PX30_CPUCLK_RATE(600000000, 1, 3),
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PX30_CPUCLK_RATE(408000000, 1, 1),
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};
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static u8 pll_mode_shift[PLL_COUNT] = {
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APLL_MODE_SHIFT, DPLL_MODE_SHIFT, CPLL_MODE_SHIFT,
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NPLL_MODE_SHIFT, GPLL_MODE_SHIFT
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};
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static u32 pll_mode_mask[PLL_COUNT] = {
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APLL_MODE_MASK, DPLL_MODE_MASK, CPLL_MODE_MASK,
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NPLL_MODE_MASK, GPLL_MODE_MASK
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};
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static struct pll_rate_table auto_table;
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static ulong px30_clk_get_pll_rate(struct px30_clk_priv *priv,
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enum px30_pll_id pll_id);
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static struct pll_rate_table *pll_clk_set_by_auto(u32 drate)
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{
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struct pll_rate_table *rate = &auto_table;
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u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0;
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u32 postdiv1, postdiv2 = 1;
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u32 fref_khz;
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u32 diff_khz, best_diff_khz;
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const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16;
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const u32 max_postdiv1 = 7, max_postdiv2 = 7;
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u32 vco_khz;
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u32 rate_khz = drate / KHz;
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if (!drate) {
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printf("%s: the frequency can't be 0 Hz\n", __func__);
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return NULL;
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}
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postdiv1 = DIV_ROUND_UP(VCO_MIN_HZ / 1000, rate_khz);
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if (postdiv1 > max_postdiv1) {
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postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1);
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postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2);
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}
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vco_khz = rate_khz * postdiv1 * postdiv2;
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if (vco_khz < (VCO_MIN_HZ / KHz) || vco_khz > (VCO_MAX_HZ / KHz) ||
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postdiv2 > max_postdiv2) {
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printf("%s: Cannot find out a supported VCO for Freq (%uHz)\n",
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__func__, rate_khz);
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return NULL;
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}
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rate->postdiv1 = postdiv1;
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rate->postdiv2 = postdiv2;
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best_diff_khz = vco_khz;
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for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) {
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fref_khz = ref_khz / refdiv;
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fbdiv = vco_khz / fref_khz;
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if (fbdiv >= max_fbdiv || fbdiv <= min_fbdiv)
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continue;
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diff_khz = vco_khz - fbdiv * fref_khz;
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if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) {
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fbdiv++;
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diff_khz = fref_khz - diff_khz;
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}
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if (diff_khz >= best_diff_khz)
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continue;
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best_diff_khz = diff_khz;
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rate->refdiv = refdiv;
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rate->fbdiv = fbdiv;
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}
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if (best_diff_khz > 4 * (MHz / KHz)) {
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printf("%s: Failed to match output frequency %u bestis %u Hz\n",
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__func__, rate_khz,
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best_diff_khz * KHz);
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return NULL;
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}
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return rate;
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}
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static const struct pll_rate_table *get_pll_settings(unsigned long rate)
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{
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unsigned int rate_count = ARRAY_SIZE(px30_pll_rates);
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int i;
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for (i = 0; i < rate_count; i++) {
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if (rate == px30_pll_rates[i].rate)
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return &px30_pll_rates[i];
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}
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return pll_clk_set_by_auto(rate);
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}
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static const struct cpu_rate_table *get_cpu_settings(unsigned long rate)
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{
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unsigned int rate_count = ARRAY_SIZE(px30_cpu_rates);
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int i;
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for (i = 0; i < rate_count; i++) {
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if (rate == px30_cpu_rates[i].rate)
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return &px30_cpu_rates[i];
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}
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return NULL;
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}
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/*
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* How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
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* Formulas also embedded within the Fractional PLL Verilog model:
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* If DSMPD = 1 (DSM is disabled, "integer mode")
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* FOUTVCO = FREF / REFDIV * FBDIV
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* FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
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* Where:
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* FOUTVCO = Fractional PLL non-divided output frequency
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* FOUTPOSTDIV = Fractional PLL divided output frequency
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* (output of second post divider)
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* FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
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* REFDIV = Fractional PLL input reference clock divider
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* FBDIV = Integer value programmed into feedback divide
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*
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*/
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static int rkclk_set_pll(struct px30_pll *pll, unsigned int *mode,
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enum px30_pll_id pll_id,
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unsigned long drate)
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{
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const struct pll_rate_table *rate;
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uint vco_hz, output_hz;
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rate = get_pll_settings(drate);
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if (!rate) {
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printf("%s unsupport rate\n", __func__);
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return -EINVAL;
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}
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/* All PLLs have same VCO and output frequency range restrictions. */
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vco_hz = OSC_HZ / 1000 * rate->fbdiv / rate->refdiv * 1000;
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output_hz = vco_hz / rate->postdiv1 / rate->postdiv2;
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debug("PLL at %p: fb=%d, ref=%d, pst1=%d, pst2=%d, vco=%u Hz, output=%u Hz\n",
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pll, rate->fbdiv, rate->refdiv, rate->postdiv1,
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rate->postdiv2, vco_hz, output_hz);
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assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
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output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ);
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/*
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* When power on or changing PLL setting,
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* we must force PLL into slow mode to ensure output stable clock.
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*/
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rk_clrsetreg(mode, pll_mode_mask[pll_id],
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PLLMUX_FROM_XIN24M << pll_mode_shift[pll_id]);
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/* use integer mode */
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rk_setreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
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/* Power down */
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rk_setreg(&pll->con1, 1 << PLL_PD_SHIFT);
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rk_clrsetreg(&pll->con0,
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PLL_POSTDIV1_MASK | PLL_FBDIV_MASK,
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(rate->postdiv1 << PLL_POSTDIV1_SHIFT) | rate->fbdiv);
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rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
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(rate->postdiv2 << PLL_POSTDIV2_SHIFT |
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rate->refdiv << PLL_REFDIV_SHIFT));
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/* Power Up */
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rk_clrreg(&pll->con1, 1 << PLL_PD_SHIFT);
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/* waiting for pll lock */
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while (!(readl(&pll->con1) & (1 << PLL_LOCK_STATUS_SHIFT)))
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udelay(1);
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rk_clrsetreg(mode, pll_mode_mask[pll_id],
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PLLMUX_FROM_PLL << pll_mode_shift[pll_id]);
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return 0;
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}
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static uint32_t rkclk_pll_get_rate(struct px30_pll *pll, unsigned int *mode,
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enum px30_pll_id pll_id)
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{
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u32 refdiv, fbdiv, postdiv1, postdiv2;
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u32 con, shift, mask;
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con = readl(mode);
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shift = pll_mode_shift[pll_id];
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mask = pll_mode_mask[pll_id];
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switch ((con & mask) >> shift) {
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case PLLMUX_FROM_XIN24M:
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return OSC_HZ;
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case PLLMUX_FROM_PLL:
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/* normal mode */
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con = readl(&pll->con0);
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postdiv1 = (con & PLL_POSTDIV1_MASK) >> PLL_POSTDIV1_SHIFT;
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fbdiv = (con & PLL_FBDIV_MASK) >> PLL_FBDIV_SHIFT;
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con = readl(&pll->con1);
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postdiv2 = (con & PLL_POSTDIV2_MASK) >> PLL_POSTDIV2_SHIFT;
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refdiv = (con & PLL_REFDIV_MASK) >> PLL_REFDIV_SHIFT;
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return (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
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case PLLMUX_FROM_RTC32K:
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default:
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return 32768;
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}
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}
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static ulong px30_i2c_get_clk(struct px30_clk_priv *priv, ulong clk_id)
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{
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struct px30_cru *cru = priv->cru;
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u32 div, con;
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switch (clk_id) {
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case SCLK_I2C0:
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con = readl(&cru->clksel_con[49]);
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div = con >> CLK_I2C0_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
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break;
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case SCLK_I2C1:
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con = readl(&cru->clksel_con[49]);
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div = con >> CLK_I2C1_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
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break;
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case SCLK_I2C2:
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con = readl(&cru->clksel_con[50]);
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div = con >> CLK_I2C2_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
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break;
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case SCLK_I2C3:
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con = readl(&cru->clksel_con[50]);
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div = con >> CLK_I2C3_DIV_CON_SHIFT & CLK_I2C_DIV_CON_MASK;
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break;
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default:
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printf("do not support this i2c bus\n");
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return -EINVAL;
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}
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return DIV_TO_RATE(priv->gpll_hz, div);
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}
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static ulong px30_i2c_set_clk(struct px30_clk_priv *priv, ulong clk_id, uint hz)
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{
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struct px30_cru *cru = priv->cru;
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int src_clk_div;
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src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
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assert(src_clk_div - 1 <= 127);
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switch (clk_id) {
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case SCLK_I2C0:
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rk_clrsetreg(&cru->clksel_con[49],
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CLK_I2C_DIV_CON_MASK << CLK_I2C0_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_MASK << CLK_I2C0_PLL_SEL_SHIFT,
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(src_clk_div - 1) << CLK_I2C0_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_GPLL << CLK_I2C0_PLL_SEL_SHIFT);
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break;
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case SCLK_I2C1:
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rk_clrsetreg(&cru->clksel_con[49],
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CLK_I2C_DIV_CON_MASK << CLK_I2C1_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_MASK << CLK_I2C1_PLL_SEL_SHIFT,
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(src_clk_div - 1) << CLK_I2C1_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_GPLL << CLK_I2C1_PLL_SEL_SHIFT);
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break;
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case SCLK_I2C2:
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rk_clrsetreg(&cru->clksel_con[50],
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CLK_I2C_DIV_CON_MASK << CLK_I2C2_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_MASK << CLK_I2C2_PLL_SEL_SHIFT,
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(src_clk_div - 1) << CLK_I2C2_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_GPLL << CLK_I2C2_PLL_SEL_SHIFT);
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break;
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case SCLK_I2C3:
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rk_clrsetreg(&cru->clksel_con[50],
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CLK_I2C_DIV_CON_MASK << CLK_I2C3_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_MASK << CLK_I2C3_PLL_SEL_SHIFT,
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(src_clk_div - 1) << CLK_I2C3_DIV_CON_SHIFT |
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CLK_I2C_PLL_SEL_GPLL << CLK_I2C3_PLL_SEL_SHIFT);
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break;
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default:
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printf("do not support this i2c bus\n");
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return -EINVAL;
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}
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return px30_i2c_get_clk(priv, clk_id);
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}
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/*
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* calculate best rational approximation for a given fraction
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* taking into account restricted register size, e.g. to find
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* appropriate values for a pll with 5 bit denominator and
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* 8 bit numerator register fields, trying to set up with a
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* frequency ratio of 3.1415, one would say:
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*
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* rational_best_approximation(31415, 10000,
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* (1 << 8) - 1, (1 << 5) - 1, &n, &d);
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*
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* you may look at given_numerator as a fixed point number,
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* with the fractional part size described in given_denominator.
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*
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* for theoretical background, see:
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* http://en.wikipedia.org/wiki/Continued_fraction
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*/
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static void rational_best_approximation(unsigned long given_numerator,
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unsigned long given_denominator,
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unsigned long max_numerator,
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unsigned long max_denominator,
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unsigned long *best_numerator,
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unsigned long *best_denominator)
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{
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unsigned long n, d, n0, d0, n1, d1;
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n = given_numerator;
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d = given_denominator;
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n0 = 0;
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d1 = 0;
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n1 = 1;
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d0 = 1;
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for (;;) {
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unsigned long t, a;
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if (n1 > max_numerator || d1 > max_denominator) {
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n1 = n0;
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d1 = d0;
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break;
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}
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if (d == 0)
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break;
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t = d;
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a = n / d;
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d = n % d;
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n = t;
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t = n0 + a * n1;
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n0 = n1;
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n1 = t;
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t = d0 + a * d1;
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d0 = d1;
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d1 = t;
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}
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*best_numerator = n1;
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*best_denominator = d1;
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}
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static ulong px30_i2s_get_clk(struct px30_clk_priv *priv, ulong clk_id)
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{
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u32 con, fracdiv, gate;
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u32 clk_src = priv->gpll_hz / 2;
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unsigned long m, n;
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struct px30_cru *cru = priv->cru;
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switch (clk_id) {
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case SCLK_I2S1:
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con = readl(&cru->clksel_con[30]);
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fracdiv = readl(&cru->clksel_con[31]);
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gate = readl(&cru->clkgate_con[10]);
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m = fracdiv & CLK_I2S1_FRAC_NUMERATOR_MASK;
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m >>= CLK_I2S1_FRAC_NUMERATOR_SHIFT;
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n = fracdiv & CLK_I2S1_FRAC_DENOMINATOR_MASK;
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n >>= CLK_I2S1_FRAC_DENOMINATOR_SHIFT;
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debug("con30: 0x%x, gate: 0x%x, frac: 0x%x\n",
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con, gate, fracdiv);
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break;
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default:
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printf("do not support this i2s bus\n");
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return -EINVAL;
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}
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return clk_src * n / m;
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}
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static ulong px30_i2s_set_clk(struct px30_clk_priv *priv, ulong clk_id, uint hz)
|
|
{
|
|
u32 clk_src;
|
|
unsigned long m, n, val;
|
|
struct px30_cru *cru = priv->cru;
|
|
|
|
clk_src = priv->gpll_hz / 2;
|
|
rational_best_approximation(hz, clk_src,
|
|
GENMASK(16 - 1, 0),
|
|
GENMASK(16 - 1, 0),
|
|
&m, &n);
|
|
switch (clk_id) {
|
|
case SCLK_I2S1:
|
|
rk_clrsetreg(&cru->clksel_con[30],
|
|
CLK_I2S1_PLL_SEL_MASK, CLK_I2S1_PLL_SEL_GPLL);
|
|
rk_clrsetreg(&cru->clksel_con[30],
|
|
CLK_I2S1_DIV_CON_MASK, 0x1);
|
|
rk_clrsetreg(&cru->clksel_con[30],
|
|
CLK_I2S1_SEL_MASK, CLK_I2S1_SEL_FRAC);
|
|
val = m << CLK_I2S1_FRAC_NUMERATOR_SHIFT | n;
|
|
writel(val, &cru->clksel_con[31]);
|
|
rk_clrsetreg(&cru->clkgate_con[10],
|
|
CLK_I2S1_OUT_MCLK_PAD_MASK,
|
|
CLK_I2S1_OUT_MCLK_PAD_ENABLE);
|
|
break;
|
|
default:
|
|
printf("do not support this i2s bus\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_i2s_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_nandc_get_clk(struct px30_clk_priv *priv)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con;
|
|
|
|
con = readl(&cru->clksel_con[15]);
|
|
div = (con & NANDC_DIV_MASK) >> NANDC_DIV_SHIFT;
|
|
|
|
return DIV_TO_RATE(priv->gpll_hz, div);
|
|
}
|
|
|
|
static ulong px30_nandc_set_clk(struct px30_clk_priv *priv,
|
|
ulong set_rate)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
/* Select nandc source from GPLL by default */
|
|
/* nandc clock defaulg div 2 internal, need provide double in cru */
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, set_rate);
|
|
assert(src_clk_div - 1 <= 31);
|
|
|
|
rk_clrsetreg(&cru->clksel_con[15],
|
|
NANDC_CLK_SEL_MASK | NANDC_PLL_MASK |
|
|
NANDC_DIV_MASK,
|
|
NANDC_CLK_SEL_NANDC << NANDC_CLK_SEL_SHIFT |
|
|
NANDC_SEL_GPLL << NANDC_PLL_SHIFT |
|
|
(src_clk_div - 1) << NANDC_DIV_SHIFT);
|
|
|
|
return px30_nandc_get_clk(priv);
|
|
}
|
|
|
|
static ulong px30_mmc_get_clk(struct px30_clk_priv *priv, uint clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con, con_id;
|
|
|
|
switch (clk_id) {
|
|
case HCLK_SDMMC:
|
|
case SCLK_SDMMC:
|
|
con_id = 16;
|
|
break;
|
|
case HCLK_EMMC:
|
|
case SCLK_EMMC:
|
|
case SCLK_EMMC_SAMPLE:
|
|
con_id = 20;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
con = readl(&cru->clksel_con[con_id]);
|
|
div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
|
|
|
|
if ((con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT
|
|
== EMMC_SEL_24M)
|
|
return DIV_TO_RATE(OSC_HZ, div) / 2;
|
|
else
|
|
return DIV_TO_RATE(priv->gpll_hz, div) / 2;
|
|
}
|
|
|
|
static ulong px30_mmc_set_clk(struct px30_clk_priv *priv,
|
|
ulong clk_id, ulong set_rate)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
u32 con_id;
|
|
|
|
switch (clk_id) {
|
|
case HCLK_SDMMC:
|
|
case SCLK_SDMMC:
|
|
con_id = 16;
|
|
break;
|
|
case HCLK_EMMC:
|
|
case SCLK_EMMC:
|
|
con_id = 20;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Select clk_sdmmc/emmc source from GPLL by default */
|
|
/* mmc clock defaulg div 2 internal, need provide double in cru */
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz / 2, set_rate);
|
|
|
|
if (src_clk_div > 127) {
|
|
/* use 24MHz source for 400KHz clock */
|
|
src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate);
|
|
rk_clrsetreg(&cru->clksel_con[con_id],
|
|
EMMC_PLL_MASK | EMMC_DIV_MASK,
|
|
EMMC_SEL_24M << EMMC_PLL_SHIFT |
|
|
(src_clk_div - 1) << EMMC_DIV_SHIFT);
|
|
} else {
|
|
rk_clrsetreg(&cru->clksel_con[con_id],
|
|
EMMC_PLL_MASK | EMMC_DIV_MASK,
|
|
EMMC_SEL_GPLL << EMMC_PLL_SHIFT |
|
|
(src_clk_div - 1) << EMMC_DIV_SHIFT);
|
|
}
|
|
rk_clrsetreg(&cru->clksel_con[con_id + 1], EMMC_CLK_SEL_MASK,
|
|
EMMC_CLK_SEL_EMMC);
|
|
|
|
return px30_mmc_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_pwm_get_clk(struct px30_clk_priv *priv, ulong clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con;
|
|
|
|
switch (clk_id) {
|
|
case SCLK_PWM0:
|
|
con = readl(&cru->clksel_con[52]);
|
|
div = con >> CLK_PWM0_DIV_CON_SHIFT & CLK_PWM_DIV_CON_MASK;
|
|
break;
|
|
case SCLK_PWM1:
|
|
con = readl(&cru->clksel_con[52]);
|
|
div = con >> CLK_PWM1_DIV_CON_SHIFT & CLK_PWM_DIV_CON_MASK;
|
|
break;
|
|
default:
|
|
printf("do not support this pwm bus\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return DIV_TO_RATE(priv->gpll_hz, div);
|
|
}
|
|
|
|
static ulong px30_pwm_set_clk(struct px30_clk_priv *priv, ulong clk_id, uint hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 127);
|
|
|
|
switch (clk_id) {
|
|
case SCLK_PWM0:
|
|
rk_clrsetreg(&cru->clksel_con[52],
|
|
CLK_PWM_DIV_CON_MASK << CLK_PWM0_DIV_CON_SHIFT |
|
|
CLK_PWM_PLL_SEL_MASK << CLK_PWM0_PLL_SEL_SHIFT,
|
|
(src_clk_div - 1) << CLK_PWM0_DIV_CON_SHIFT |
|
|
CLK_PWM_PLL_SEL_GPLL << CLK_PWM0_PLL_SEL_SHIFT);
|
|
break;
|
|
case SCLK_PWM1:
|
|
rk_clrsetreg(&cru->clksel_con[52],
|
|
CLK_PWM_DIV_CON_MASK << CLK_PWM1_DIV_CON_SHIFT |
|
|
CLK_PWM_PLL_SEL_MASK << CLK_PWM1_PLL_SEL_SHIFT,
|
|
(src_clk_div - 1) << CLK_PWM1_DIV_CON_SHIFT |
|
|
CLK_PWM_PLL_SEL_GPLL << CLK_PWM1_PLL_SEL_SHIFT);
|
|
break;
|
|
default:
|
|
printf("do not support this pwm bus\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_pwm_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_saradc_get_clk(struct px30_clk_priv *priv)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con;
|
|
|
|
con = readl(&cru->clksel_con[55]);
|
|
div = con >> CLK_SARADC_DIV_CON_SHIFT & CLK_SARADC_DIV_CON_MASK;
|
|
|
|
return DIV_TO_RATE(OSC_HZ, div);
|
|
}
|
|
|
|
static ulong px30_saradc_set_clk(struct px30_clk_priv *priv, uint hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
src_clk_div = DIV_ROUND_UP(OSC_HZ, hz);
|
|
assert(src_clk_div - 1 <= 2047);
|
|
|
|
rk_clrsetreg(&cru->clksel_con[55],
|
|
CLK_SARADC_DIV_CON_MASK,
|
|
(src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT);
|
|
|
|
return px30_saradc_get_clk(priv);
|
|
}
|
|
|
|
static ulong px30_tsadc_get_clk(struct px30_clk_priv *priv)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con;
|
|
|
|
con = readl(&cru->clksel_con[54]);
|
|
div = con >> CLK_SARADC_DIV_CON_SHIFT & CLK_SARADC_DIV_CON_MASK;
|
|
|
|
return DIV_TO_RATE(OSC_HZ, div);
|
|
}
|
|
|
|
static ulong px30_tsadc_set_clk(struct px30_clk_priv *priv, uint hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
src_clk_div = DIV_ROUND_UP(OSC_HZ, hz);
|
|
assert(src_clk_div - 1 <= 2047);
|
|
|
|
rk_clrsetreg(&cru->clksel_con[54],
|
|
CLK_SARADC_DIV_CON_MASK,
|
|
(src_clk_div - 1) << CLK_SARADC_DIV_CON_SHIFT);
|
|
|
|
return px30_tsadc_get_clk(priv);
|
|
}
|
|
|
|
static ulong px30_spi_get_clk(struct px30_clk_priv *priv, ulong clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con;
|
|
|
|
switch (clk_id) {
|
|
case SCLK_SPI0:
|
|
con = readl(&cru->clksel_con[53]);
|
|
div = con >> CLK_SPI0_DIV_CON_SHIFT & CLK_SPI_DIV_CON_MASK;
|
|
break;
|
|
case SCLK_SPI1:
|
|
con = readl(&cru->clksel_con[53]);
|
|
div = con >> CLK_SPI1_DIV_CON_SHIFT & CLK_SPI_DIV_CON_MASK;
|
|
break;
|
|
default:
|
|
printf("do not support this pwm bus\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return DIV_TO_RATE(priv->gpll_hz, div);
|
|
}
|
|
|
|
static ulong px30_spi_set_clk(struct px30_clk_priv *priv, ulong clk_id, uint hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 127);
|
|
|
|
switch (clk_id) {
|
|
case SCLK_SPI0:
|
|
rk_clrsetreg(&cru->clksel_con[53],
|
|
CLK_SPI_DIV_CON_MASK << CLK_SPI0_DIV_CON_SHIFT |
|
|
CLK_SPI_PLL_SEL_MASK << CLK_SPI0_PLL_SEL_SHIFT,
|
|
(src_clk_div - 1) << CLK_SPI0_DIV_CON_SHIFT |
|
|
CLK_SPI_PLL_SEL_GPLL << CLK_SPI0_PLL_SEL_SHIFT);
|
|
break;
|
|
case SCLK_SPI1:
|
|
rk_clrsetreg(&cru->clksel_con[53],
|
|
CLK_SPI_DIV_CON_MASK << CLK_SPI1_DIV_CON_SHIFT |
|
|
CLK_SPI_PLL_SEL_MASK << CLK_SPI1_PLL_SEL_SHIFT,
|
|
(src_clk_div - 1) << CLK_SPI1_DIV_CON_SHIFT |
|
|
CLK_SPI_PLL_SEL_GPLL << CLK_SPI1_PLL_SEL_SHIFT);
|
|
break;
|
|
default:
|
|
printf("do not support this pwm bus\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_spi_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_vop_get_clk(struct px30_clk_priv *priv, ulong clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con, parent;
|
|
|
|
switch (clk_id) {
|
|
case ACLK_VOPB:
|
|
case ACLK_VOPL:
|
|
con = readl(&cru->clksel_con[3]);
|
|
div = con & ACLK_VO_DIV_MASK;
|
|
parent = priv->gpll_hz;
|
|
break;
|
|
case DCLK_VOPB:
|
|
con = readl(&cru->clksel_con[5]);
|
|
div = con & DCLK_VOPB_DIV_MASK;
|
|
parent = rkclk_pll_get_rate(&cru->pll[CPLL], &cru->mode, CPLL);
|
|
break;
|
|
case DCLK_VOPL:
|
|
con = readl(&cru->clksel_con[8]);
|
|
div = con & DCLK_VOPL_DIV_MASK;
|
|
parent = rkclk_pll_get_rate(&cru->pll[NPLL], &cru->mode, NPLL);
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return DIV_TO_RATE(parent, div);
|
|
}
|
|
|
|
static ulong px30_vop_set_clk(struct px30_clk_priv *priv, ulong clk_id, uint hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
ulong npll_hz;
|
|
int src_clk_div;
|
|
|
|
switch (clk_id) {
|
|
case ACLK_VOPB:
|
|
case ACLK_VOPL:
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 31);
|
|
rk_clrsetreg(&cru->clksel_con[3],
|
|
ACLK_VO_PLL_MASK | ACLK_VO_DIV_MASK,
|
|
ACLK_VO_SEL_GPLL << ACLK_VO_PLL_SHIFT |
|
|
(src_clk_div - 1) << ACLK_VO_DIV_SHIFT);
|
|
break;
|
|
case DCLK_VOPB:
|
|
if (hz < PX30_VOP_PLL_LIMIT) {
|
|
src_clk_div = DIV_ROUND_UP(PX30_VOP_PLL_LIMIT, hz);
|
|
if (src_clk_div % 2)
|
|
src_clk_div = src_clk_div - 1;
|
|
} else {
|
|
src_clk_div = 1;
|
|
}
|
|
assert(src_clk_div - 1 <= 255);
|
|
rkclk_set_pll(&cru->pll[CPLL], &cru->mode,
|
|
CPLL, hz * src_clk_div);
|
|
rk_clrsetreg(&cru->clksel_con[5],
|
|
DCLK_VOPB_SEL_MASK | DCLK_VOPB_PLL_SEL_MASK |
|
|
DCLK_VOPB_DIV_MASK,
|
|
DCLK_VOPB_SEL_DIVOUT << DCLK_VOPB_SEL_SHIFT |
|
|
DCLK_VOPB_PLL_SEL_CPLL << DCLK_VOPB_PLL_SEL_SHIFT |
|
|
(src_clk_div - 1) << DCLK_VOPB_DIV_SHIFT);
|
|
break;
|
|
case DCLK_VOPL:
|
|
npll_hz = px30_clk_get_pll_rate(priv, NPLL);
|
|
if (npll_hz >= PX30_VOP_PLL_LIMIT && npll_hz >= hz &&
|
|
npll_hz % hz == 0) {
|
|
src_clk_div = npll_hz / hz;
|
|
assert(src_clk_div - 1 <= 255);
|
|
} else {
|
|
if (hz < PX30_VOP_PLL_LIMIT) {
|
|
src_clk_div = DIV_ROUND_UP(PX30_VOP_PLL_LIMIT,
|
|
hz);
|
|
if (src_clk_div % 2)
|
|
src_clk_div = src_clk_div - 1;
|
|
} else {
|
|
src_clk_div = 1;
|
|
}
|
|
assert(src_clk_div - 1 <= 255);
|
|
rkclk_set_pll(&cru->pll[NPLL], &cru->mode, NPLL,
|
|
hz * src_clk_div);
|
|
}
|
|
rk_clrsetreg(&cru->clksel_con[8],
|
|
DCLK_VOPL_SEL_MASK | DCLK_VOPL_PLL_SEL_MASK |
|
|
DCLK_VOPL_DIV_MASK,
|
|
DCLK_VOPL_SEL_DIVOUT << DCLK_VOPL_SEL_SHIFT |
|
|
DCLK_VOPL_PLL_SEL_NPLL << DCLK_VOPL_PLL_SEL_SHIFT |
|
|
(src_clk_div - 1) << DCLK_VOPL_DIV_SHIFT);
|
|
break;
|
|
default:
|
|
printf("do not support this vop freq\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_vop_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_bus_get_clk(struct px30_clk_priv *priv, ulong clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con, parent;
|
|
|
|
switch (clk_id) {
|
|
case ACLK_BUS_PRE:
|
|
con = readl(&cru->clksel_con[23]);
|
|
div = (con & BUS_ACLK_DIV_MASK) >> BUS_ACLK_DIV_SHIFT;
|
|
parent = priv->gpll_hz;
|
|
break;
|
|
case HCLK_BUS_PRE:
|
|
con = readl(&cru->clksel_con[24]);
|
|
div = (con & BUS_HCLK_DIV_MASK) >> BUS_HCLK_DIV_SHIFT;
|
|
parent = priv->gpll_hz;
|
|
break;
|
|
case PCLK_BUS_PRE:
|
|
case PCLK_WDT_NS:
|
|
parent = px30_bus_get_clk(priv, ACLK_BUS_PRE);
|
|
con = readl(&cru->clksel_con[24]);
|
|
div = (con & BUS_PCLK_DIV_MASK) >> BUS_PCLK_DIV_SHIFT;
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return DIV_TO_RATE(parent, div);
|
|
}
|
|
|
|
static ulong px30_bus_set_clk(struct px30_clk_priv *priv, ulong clk_id,
|
|
ulong hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
/*
|
|
* select gpll as pd_bus bus clock source and
|
|
* set up dependent divisors for PCLK/HCLK and ACLK clocks.
|
|
*/
|
|
switch (clk_id) {
|
|
case ACLK_BUS_PRE:
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 31);
|
|
rk_clrsetreg(&cru->clksel_con[23],
|
|
BUS_PLL_SEL_MASK | BUS_ACLK_DIV_MASK,
|
|
BUS_PLL_SEL_GPLL << BUS_PLL_SEL_SHIFT |
|
|
(src_clk_div - 1) << BUS_ACLK_DIV_SHIFT);
|
|
break;
|
|
case HCLK_BUS_PRE:
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 31);
|
|
rk_clrsetreg(&cru->clksel_con[24],
|
|
BUS_PLL_SEL_MASK | BUS_HCLK_DIV_MASK,
|
|
BUS_PLL_SEL_GPLL << BUS_PLL_SEL_SHIFT |
|
|
(src_clk_div - 1) << BUS_HCLK_DIV_SHIFT);
|
|
break;
|
|
case PCLK_BUS_PRE:
|
|
src_clk_div =
|
|
DIV_ROUND_UP(px30_bus_get_clk(priv, ACLK_BUS_PRE), hz);
|
|
assert(src_clk_div - 1 <= 3);
|
|
rk_clrsetreg(&cru->clksel_con[24],
|
|
BUS_PCLK_DIV_MASK,
|
|
(src_clk_div - 1) << BUS_PCLK_DIV_SHIFT);
|
|
break;
|
|
default:
|
|
printf("do not support this bus freq\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_bus_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_peri_get_clk(struct px30_clk_priv *priv, ulong clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con, parent;
|
|
|
|
switch (clk_id) {
|
|
case ACLK_PERI_PRE:
|
|
con = readl(&cru->clksel_con[14]);
|
|
div = (con & PERI_ACLK_DIV_MASK) >> PERI_ACLK_DIV_SHIFT;
|
|
parent = priv->gpll_hz;
|
|
break;
|
|
case HCLK_PERI_PRE:
|
|
con = readl(&cru->clksel_con[14]);
|
|
div = (con & PERI_HCLK_DIV_MASK) >> PERI_HCLK_DIV_SHIFT;
|
|
parent = priv->gpll_hz;
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return DIV_TO_RATE(parent, div);
|
|
}
|
|
|
|
static ulong px30_peri_set_clk(struct px30_clk_priv *priv, ulong clk_id,
|
|
ulong hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 31);
|
|
|
|
/*
|
|
* select gpll as pd_peri bus clock source and
|
|
* set up dependent divisors for HCLK and ACLK clocks.
|
|
*/
|
|
switch (clk_id) {
|
|
case ACLK_PERI_PRE:
|
|
rk_clrsetreg(&cru->clksel_con[14],
|
|
PERI_PLL_SEL_MASK | PERI_ACLK_DIV_MASK,
|
|
PERI_PLL_GPLL << PERI_PLL_SEL_SHIFT |
|
|
(src_clk_div - 1) << PERI_ACLK_DIV_SHIFT);
|
|
break;
|
|
case HCLK_PERI_PRE:
|
|
rk_clrsetreg(&cru->clksel_con[14],
|
|
PERI_PLL_SEL_MASK | PERI_HCLK_DIV_MASK,
|
|
PERI_PLL_GPLL << PERI_PLL_SEL_SHIFT |
|
|
(src_clk_div - 1) << PERI_HCLK_DIV_SHIFT);
|
|
break;
|
|
default:
|
|
printf("do not support this peri freq\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_peri_get_clk(priv, clk_id);
|
|
}
|
|
|
|
#ifndef CONFIG_SPL_BUILD
|
|
static ulong px30_crypto_get_clk(struct px30_clk_priv *priv, ulong clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 div, con, parent;
|
|
|
|
switch (clk_id) {
|
|
case SCLK_CRYPTO:
|
|
con = readl(&cru->clksel_con[25]);
|
|
div = (con & CRYPTO_DIV_MASK) >> CRYPTO_DIV_SHIFT;
|
|
parent = priv->gpll_hz;
|
|
break;
|
|
case SCLK_CRYPTO_APK:
|
|
con = readl(&cru->clksel_con[25]);
|
|
div = (con & CRYPTO_APK_DIV_MASK) >> CRYPTO_APK_DIV_SHIFT;
|
|
parent = priv->gpll_hz;
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return DIV_TO_RATE(parent, div);
|
|
}
|
|
|
|
static ulong px30_crypto_set_clk(struct px30_clk_priv *priv, ulong clk_id,
|
|
ulong hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
int src_clk_div;
|
|
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 31);
|
|
|
|
/*
|
|
* select gpll as crypto clock source and
|
|
* set up dependent divisors for crypto clocks.
|
|
*/
|
|
switch (clk_id) {
|
|
case SCLK_CRYPTO:
|
|
rk_clrsetreg(&cru->clksel_con[25],
|
|
CRYPTO_PLL_SEL_MASK | CRYPTO_DIV_MASK,
|
|
CRYPTO_PLL_SEL_GPLL << CRYPTO_PLL_SEL_SHIFT |
|
|
(src_clk_div - 1) << CRYPTO_DIV_SHIFT);
|
|
break;
|
|
case SCLK_CRYPTO_APK:
|
|
rk_clrsetreg(&cru->clksel_con[25],
|
|
CRYPTO_APK_PLL_SEL_MASK | CRYPTO_APK_DIV_MASK,
|
|
CRYPTO_PLL_SEL_GPLL << CRYPTO_APK_SEL_SHIFT |
|
|
(src_clk_div - 1) << CRYPTO_APK_DIV_SHIFT);
|
|
break;
|
|
default:
|
|
printf("do not support this peri freq\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_crypto_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_i2s1_mclk_get_clk(struct px30_clk_priv *priv, ulong clk_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 con;
|
|
|
|
con = readl(&cru->clksel_con[30]);
|
|
|
|
if (!(con & CLK_I2S1_OUT_SEL_MASK))
|
|
return -ENOENT;
|
|
|
|
return 12000000;
|
|
}
|
|
|
|
static ulong px30_i2s1_mclk_set_clk(struct px30_clk_priv *priv, ulong clk_id,
|
|
ulong hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
|
|
if (hz != 12000000) {
|
|
printf("do not support this i2s1_mclk freq\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
rk_clrsetreg(&cru->clksel_con[30], CLK_I2S1_OUT_SEL_MASK,
|
|
CLK_I2S1_OUT_SEL_OSC);
|
|
rk_clrsetreg(&cru->clkgate_con[10], CLK_I2S1_OUT_MCLK_PAD_MASK,
|
|
CLK_I2S1_OUT_MCLK_PAD_ENABLE);
|
|
|
|
return px30_i2s1_mclk_get_clk(priv, clk_id);
|
|
}
|
|
|
|
static ulong px30_mac_set_clk(struct px30_clk_priv *priv, uint hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
u32 con = readl(&cru->clksel_con[22]);
|
|
ulong pll_rate;
|
|
u8 div;
|
|
|
|
if ((con >> GMAC_PLL_SEL_SHIFT) & GMAC_PLL_SEL_CPLL)
|
|
pll_rate = px30_clk_get_pll_rate(priv, CPLL);
|
|
else if ((con >> GMAC_PLL_SEL_SHIFT) & GMAC_PLL_SEL_NPLL)
|
|
pll_rate = px30_clk_get_pll_rate(priv, NPLL);
|
|
else
|
|
pll_rate = priv->gpll_hz;
|
|
|
|
/*default set 50MHZ for gmac*/
|
|
if (!hz)
|
|
hz = 50000000;
|
|
|
|
div = DIV_ROUND_UP(pll_rate, hz) - 1;
|
|
assert(div < 32);
|
|
rk_clrsetreg(&cru->clksel_con[22], CLK_GMAC_DIV_MASK,
|
|
div << CLK_GMAC_DIV_SHIFT);
|
|
|
|
return DIV_TO_RATE(pll_rate, div);
|
|
}
|
|
|
|
static int px30_mac_set_speed_clk(struct px30_clk_priv *priv, uint hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
|
|
if (hz != 2500000 && hz != 25000000) {
|
|
debug("Unsupported mac speed:%d\n", hz);
|
|
return -EINVAL;
|
|
}
|
|
|
|
rk_clrsetreg(&cru->clksel_con[23], RMII_CLK_SEL_MASK,
|
|
((hz == 2500000) ? 0 : 1) << RMII_CLK_SEL_SHIFT);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#endif
|
|
|
|
static ulong px30_clk_get_pll_rate(struct px30_clk_priv *priv,
|
|
enum px30_pll_id pll_id)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
|
|
return rkclk_pll_get_rate(&cru->pll[pll_id], &cru->mode, pll_id);
|
|
}
|
|
|
|
static ulong px30_clk_set_pll_rate(struct px30_clk_priv *priv,
|
|
enum px30_pll_id pll_id, ulong hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
|
|
if (rkclk_set_pll(&cru->pll[pll_id], &cru->mode, pll_id, hz))
|
|
return -EINVAL;
|
|
return rkclk_pll_get_rate(&cru->pll[pll_id], &cru->mode, pll_id);
|
|
}
|
|
|
|
static ulong px30_armclk_set_clk(struct px30_clk_priv *priv, ulong hz)
|
|
{
|
|
struct px30_cru *cru = priv->cru;
|
|
const struct cpu_rate_table *rate;
|
|
ulong old_rate;
|
|
|
|
rate = get_cpu_settings(hz);
|
|
if (!rate) {
|
|
printf("%s unsupport rate\n", __func__);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/*
|
|
* select apll as cpu/core clock pll source and
|
|
* set up dependent divisors for PERI and ACLK clocks.
|
|
* core hz : apll = 1:1
|
|
*/
|
|
old_rate = px30_clk_get_pll_rate(priv, APLL);
|
|
if (old_rate > hz) {
|
|
if (rkclk_set_pll(&cru->pll[APLL], &cru->mode, APLL, hz))
|
|
return -EINVAL;
|
|
rk_clrsetreg(&cru->clksel_con[0],
|
|
CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK |
|
|
CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK,
|
|
rate->aclk_div << CORE_ACLK_DIV_SHIFT |
|
|
rate->pclk_div << CORE_DBG_DIV_SHIFT |
|
|
CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
|
|
0 << CORE_DIV_CON_SHIFT);
|
|
} else if (old_rate < hz) {
|
|
rk_clrsetreg(&cru->clksel_con[0],
|
|
CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK |
|
|
CORE_ACLK_DIV_MASK | CORE_DBG_DIV_MASK,
|
|
rate->aclk_div << CORE_ACLK_DIV_SHIFT |
|
|
rate->pclk_div << CORE_DBG_DIV_SHIFT |
|
|
CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
|
|
0 << CORE_DIV_CON_SHIFT);
|
|
if (rkclk_set_pll(&cru->pll[APLL], &cru->mode, APLL, hz))
|
|
return -EINVAL;
|
|
}
|
|
|
|
return px30_clk_get_pll_rate(priv, APLL);
|
|
}
|
|
|
|
static ulong px30_clk_get_rate(struct clk *clk)
|
|
{
|
|
struct px30_clk_priv *priv = dev_get_priv(clk->dev);
|
|
ulong rate = 0;
|
|
|
|
if (!priv->gpll_hz && clk->id > ARMCLK) {
|
|
printf("%s gpll=%lu\n", __func__, priv->gpll_hz);
|
|
return -ENOENT;
|
|
}
|
|
|
|
debug("%s %ld\n", __func__, clk->id);
|
|
switch (clk->id) {
|
|
case PLL_APLL:
|
|
rate = px30_clk_get_pll_rate(priv, APLL);
|
|
break;
|
|
case PLL_DPLL:
|
|
rate = px30_clk_get_pll_rate(priv, DPLL);
|
|
break;
|
|
case PLL_CPLL:
|
|
rate = px30_clk_get_pll_rate(priv, CPLL);
|
|
break;
|
|
case PLL_NPLL:
|
|
rate = px30_clk_get_pll_rate(priv, NPLL);
|
|
break;
|
|
case ARMCLK:
|
|
rate = px30_clk_get_pll_rate(priv, APLL);
|
|
break;
|
|
case HCLK_SDMMC:
|
|
case HCLK_EMMC:
|
|
case SCLK_SDMMC:
|
|
case SCLK_EMMC:
|
|
case SCLK_EMMC_SAMPLE:
|
|
rate = px30_mmc_get_clk(priv, clk->id);
|
|
break;
|
|
case SCLK_I2C0:
|
|
case SCLK_I2C1:
|
|
case SCLK_I2C2:
|
|
case SCLK_I2C3:
|
|
rate = px30_i2c_get_clk(priv, clk->id);
|
|
break;
|
|
case SCLK_I2S1:
|
|
rate = px30_i2s_get_clk(priv, clk->id);
|
|
break;
|
|
case SCLK_NANDC:
|
|
rate = px30_nandc_get_clk(priv);
|
|
break;
|
|
case SCLK_PWM0:
|
|
case SCLK_PWM1:
|
|
rate = px30_pwm_get_clk(priv, clk->id);
|
|
break;
|
|
case SCLK_SARADC:
|
|
rate = px30_saradc_get_clk(priv);
|
|
break;
|
|
case SCLK_TSADC:
|
|
rate = px30_tsadc_get_clk(priv);
|
|
break;
|
|
case SCLK_SPI0:
|
|
case SCLK_SPI1:
|
|
rate = px30_spi_get_clk(priv, clk->id);
|
|
break;
|
|
case ACLK_VOPB:
|
|
case ACLK_VOPL:
|
|
case DCLK_VOPB:
|
|
case DCLK_VOPL:
|
|
rate = px30_vop_get_clk(priv, clk->id);
|
|
break;
|
|
case ACLK_BUS_PRE:
|
|
case HCLK_BUS_PRE:
|
|
case PCLK_BUS_PRE:
|
|
case PCLK_WDT_NS:
|
|
rate = px30_bus_get_clk(priv, clk->id);
|
|
break;
|
|
case ACLK_PERI_PRE:
|
|
case HCLK_PERI_PRE:
|
|
rate = px30_peri_get_clk(priv, clk->id);
|
|
break;
|
|
#ifndef CONFIG_SPL_BUILD
|
|
case SCLK_CRYPTO:
|
|
case SCLK_CRYPTO_APK:
|
|
rate = px30_crypto_get_clk(priv, clk->id);
|
|
break;
|
|
#endif
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return rate;
|
|
}
|
|
|
|
static ulong px30_clk_set_rate(struct clk *clk, ulong rate)
|
|
{
|
|
struct px30_clk_priv *priv = dev_get_priv(clk->dev);
|
|
ulong ret = 0;
|
|
|
|
if (!priv->gpll_hz && clk->id > ARMCLK) {
|
|
printf("%s gpll=%lu\n", __func__, priv->gpll_hz);
|
|
return -ENOENT;
|
|
}
|
|
|
|
debug("%s %ld %ld\n", __func__, clk->id, rate);
|
|
switch (clk->id) {
|
|
case PLL_NPLL:
|
|
ret = px30_clk_set_pll_rate(priv, NPLL, rate);
|
|
break;
|
|
case ARMCLK:
|
|
ret = px30_armclk_set_clk(priv, rate);
|
|
break;
|
|
case HCLK_SDMMC:
|
|
case HCLK_EMMC:
|
|
case SCLK_SDMMC:
|
|
case SCLK_EMMC:
|
|
ret = px30_mmc_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case SCLK_I2C0:
|
|
case SCLK_I2C1:
|
|
case SCLK_I2C2:
|
|
case SCLK_I2C3:
|
|
ret = px30_i2c_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case SCLK_I2S1:
|
|
ret = px30_i2s_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case SCLK_NANDC:
|
|
ret = px30_nandc_set_clk(priv, rate);
|
|
break;
|
|
case SCLK_PWM0:
|
|
case SCLK_PWM1:
|
|
ret = px30_pwm_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case SCLK_SARADC:
|
|
ret = px30_saradc_set_clk(priv, rate);
|
|
break;
|
|
case SCLK_TSADC:
|
|
ret = px30_tsadc_set_clk(priv, rate);
|
|
break;
|
|
case SCLK_SPI0:
|
|
case SCLK_SPI1:
|
|
ret = px30_spi_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case ACLK_VOPB:
|
|
case ACLK_VOPL:
|
|
case DCLK_VOPB:
|
|
case DCLK_VOPL:
|
|
ret = px30_vop_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case ACLK_BUS_PRE:
|
|
case HCLK_BUS_PRE:
|
|
case PCLK_BUS_PRE:
|
|
ret = px30_bus_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case ACLK_PERI_PRE:
|
|
case HCLK_PERI_PRE:
|
|
ret = px30_peri_set_clk(priv, clk->id, rate);
|
|
break;
|
|
#ifndef CONFIG_SPL_BUILD
|
|
case SCLK_CRYPTO:
|
|
case SCLK_CRYPTO_APK:
|
|
ret = px30_crypto_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case SCLK_I2S1_OUT:
|
|
ret = px30_i2s1_mclk_set_clk(priv, clk->id, rate);
|
|
break;
|
|
case SCLK_GMAC:
|
|
case SCLK_GMAC_SRC:
|
|
ret = px30_mac_set_clk(priv, rate);
|
|
break;
|
|
case SCLK_GMAC_RMII:
|
|
ret = px30_mac_set_speed_clk(priv, rate);
|
|
break;
|
|
#endif
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
|
|
static int px30_gmac_set_parent(struct clk *clk, struct clk *parent)
|
|
{
|
|
struct px30_clk_priv *priv = dev_get_priv(clk->dev);
|
|
struct px30_cru *cru = priv->cru;
|
|
|
|
if (parent->id == SCLK_GMAC_SRC) {
|
|
debug("%s: switching GAMC to SCLK_GMAC_SRC\n", __func__);
|
|
rk_clrsetreg(&cru->clksel_con[23], RMII_EXTCLK_SEL_MASK,
|
|
RMII_EXTCLK_SEL_INT << RMII_EXTCLK_SEL_SHIFT);
|
|
} else {
|
|
debug("%s: switching GMAC to external clock\n", __func__);
|
|
rk_clrsetreg(&cru->clksel_con[23], RMII_EXTCLK_SEL_MASK,
|
|
RMII_EXTCLK_SEL_EXT << RMII_EXTCLK_SEL_SHIFT);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static int px30_clk_set_parent(struct clk *clk, struct clk *parent)
|
|
{
|
|
switch (clk->id) {
|
|
case SCLK_GMAC:
|
|
return px30_gmac_set_parent(clk, parent);
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static int px30_clk_enable(struct clk *clk)
|
|
{
|
|
switch (clk->id) {
|
|
case HCLK_HOST:
|
|
case SCLK_GMAC:
|
|
case SCLK_GMAC_RX_TX:
|
|
case SCLK_MAC_REF:
|
|
case SCLK_MAC_REFOUT:
|
|
case ACLK_GMAC:
|
|
case PCLK_GMAC:
|
|
case SCLK_GMAC_RMII:
|
|
/* Required to successfully probe the Designware GMAC driver */
|
|
return 0;
|
|
}
|
|
|
|
debug("%s: unsupported clk %ld\n", __func__, clk->id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
static struct clk_ops px30_clk_ops = {
|
|
.get_rate = px30_clk_get_rate,
|
|
.set_rate = px30_clk_set_rate,
|
|
#if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
|
|
.set_parent = px30_clk_set_parent,
|
|
#endif
|
|
.enable = px30_clk_enable,
|
|
};
|
|
|
|
static void px30_clk_init(struct px30_clk_priv *priv)
|
|
{
|
|
ulong npll_hz;
|
|
int ret;
|
|
|
|
npll_hz = px30_clk_get_pll_rate(priv, NPLL);
|
|
if (npll_hz != NPLL_HZ) {
|
|
ret = px30_clk_set_pll_rate(priv, NPLL, NPLL_HZ);
|
|
if (ret < 0)
|
|
printf("%s failed to set npll rate\n", __func__);
|
|
}
|
|
|
|
px30_bus_set_clk(priv, ACLK_BUS_PRE, ACLK_BUS_HZ);
|
|
px30_bus_set_clk(priv, HCLK_BUS_PRE, HCLK_BUS_HZ);
|
|
px30_bus_set_clk(priv, PCLK_BUS_PRE, PCLK_BUS_HZ);
|
|
px30_peri_set_clk(priv, ACLK_PERI_PRE, ACLK_PERI_HZ);
|
|
px30_peri_set_clk(priv, HCLK_PERI_PRE, HCLK_PERI_HZ);
|
|
}
|
|
|
|
static int px30_clk_probe(struct udevice *dev)
|
|
{
|
|
struct px30_clk_priv *priv = dev_get_priv(dev);
|
|
struct clk clk_gpll;
|
|
int ret;
|
|
|
|
if (px30_clk_get_pll_rate(priv, APLL) != APLL_HZ)
|
|
px30_armclk_set_clk(priv, APLL_HZ);
|
|
|
|
/* get the GPLL rate from the pmucru */
|
|
ret = clk_get_by_name(dev, "gpll", &clk_gpll);
|
|
if (ret) {
|
|
printf("%s: failed to get gpll clk from pmucru\n", __func__);
|
|
return ret;
|
|
}
|
|
|
|
priv->gpll_hz = clk_get_rate(&clk_gpll);
|
|
|
|
px30_clk_init(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int px30_clk_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct px30_clk_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->cru = dev_read_addr_ptr(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int px30_clk_bind(struct udevice *dev)
|
|
{
|
|
int ret;
|
|
struct udevice *sys_child;
|
|
struct sysreset_reg *priv;
|
|
|
|
/* The reset driver does not have a device node, so bind it here */
|
|
ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
|
|
&sys_child);
|
|
if (ret) {
|
|
debug("Warning: No sysreset driver: ret=%d\n", ret);
|
|
} else {
|
|
priv = malloc(sizeof(struct sysreset_reg));
|
|
priv->glb_srst_fst_value = offsetof(struct px30_cru,
|
|
glb_srst_fst);
|
|
priv->glb_srst_snd_value = offsetof(struct px30_cru,
|
|
glb_srst_snd);
|
|
sys_child->priv = priv;
|
|
}
|
|
|
|
#if CONFIG_IS_ENABLED(RESET_ROCKCHIP)
|
|
ret = offsetof(struct px30_cru, softrst_con[0]);
|
|
ret = rockchip_reset_bind(dev, ret, 12);
|
|
if (ret)
|
|
debug("Warning: software reset driver bind faile\n");
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id px30_clk_ids[] = {
|
|
{ .compatible = "rockchip,px30-cru" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(rockchip_px30_cru) = {
|
|
.name = "rockchip_px30_cru",
|
|
.id = UCLASS_CLK,
|
|
.of_match = px30_clk_ids,
|
|
.priv_auto_alloc_size = sizeof(struct px30_clk_priv),
|
|
.ofdata_to_platdata = px30_clk_ofdata_to_platdata,
|
|
.ops = &px30_clk_ops,
|
|
.bind = px30_clk_bind,
|
|
.probe = px30_clk_probe,
|
|
};
|
|
|
|
static ulong px30_pclk_pmu_get_pmuclk(struct px30_pmuclk_priv *priv)
|
|
{
|
|
struct px30_pmucru *pmucru = priv->pmucru;
|
|
u32 div, con;
|
|
|
|
con = readl(&pmucru->pmu_clksel_con[0]);
|
|
div = (con & CLK_PMU_PCLK_DIV_MASK) >> CLK_PMU_PCLK_DIV_SHIFT;
|
|
|
|
return DIV_TO_RATE(priv->gpll_hz, div);
|
|
}
|
|
|
|
static ulong px30_pclk_pmu_set_pmuclk(struct px30_pmuclk_priv *priv, ulong hz)
|
|
{
|
|
struct px30_pmucru *pmucru = priv->pmucru;
|
|
int src_clk_div;
|
|
|
|
src_clk_div = DIV_ROUND_UP(priv->gpll_hz, hz);
|
|
assert(src_clk_div - 1 <= 31);
|
|
|
|
rk_clrsetreg(&pmucru->pmu_clksel_con[0],
|
|
CLK_PMU_PCLK_DIV_MASK,
|
|
(src_clk_div - 1) << CLK_PMU_PCLK_DIV_SHIFT);
|
|
|
|
return px30_pclk_pmu_get_pmuclk(priv);
|
|
}
|
|
|
|
static ulong px30_pmuclk_get_gpll_rate(struct px30_pmuclk_priv *priv)
|
|
{
|
|
struct px30_pmucru *pmucru = priv->pmucru;
|
|
|
|
return rkclk_pll_get_rate(&pmucru->pll, &pmucru->pmu_mode, GPLL);
|
|
}
|
|
|
|
static ulong px30_pmuclk_set_gpll_rate(struct px30_pmuclk_priv *priv, ulong hz)
|
|
{
|
|
struct px30_pmucru *pmucru = priv->pmucru;
|
|
ulong pclk_pmu_rate;
|
|
u32 div;
|
|
|
|
if (priv->gpll_hz == hz)
|
|
return priv->gpll_hz;
|
|
|
|
div = DIV_ROUND_UP(hz, priv->gpll_hz);
|
|
|
|
/* save clock rate */
|
|
pclk_pmu_rate = px30_pclk_pmu_get_pmuclk(priv);
|
|
|
|
/* avoid rate too large, reduce rate first */
|
|
px30_pclk_pmu_set_pmuclk(priv, pclk_pmu_rate / div);
|
|
|
|
/* change gpll rate */
|
|
rkclk_set_pll(&pmucru->pll, &pmucru->pmu_mode, GPLL, hz);
|
|
priv->gpll_hz = px30_pmuclk_get_gpll_rate(priv);
|
|
|
|
/* restore clock rate */
|
|
px30_pclk_pmu_set_pmuclk(priv, pclk_pmu_rate);
|
|
|
|
return priv->gpll_hz;
|
|
}
|
|
|
|
static ulong px30_pmuclk_get_rate(struct clk *clk)
|
|
{
|
|
struct px30_pmuclk_priv *priv = dev_get_priv(clk->dev);
|
|
ulong rate = 0;
|
|
|
|
debug("%s %ld\n", __func__, clk->id);
|
|
switch (clk->id) {
|
|
case PLL_GPLL:
|
|
rate = px30_pmuclk_get_gpll_rate(priv);
|
|
break;
|
|
case PCLK_PMU_PRE:
|
|
rate = px30_pclk_pmu_get_pmuclk(priv);
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return rate;
|
|
}
|
|
|
|
static ulong px30_pmuclk_set_rate(struct clk *clk, ulong rate)
|
|
{
|
|
struct px30_pmuclk_priv *priv = dev_get_priv(clk->dev);
|
|
ulong ret = 0;
|
|
|
|
debug("%s %ld %ld\n", __func__, clk->id, rate);
|
|
switch (clk->id) {
|
|
case PLL_GPLL:
|
|
ret = px30_pmuclk_set_gpll_rate(priv, rate);
|
|
break;
|
|
case PCLK_PMU_PRE:
|
|
ret = px30_pclk_pmu_set_pmuclk(priv, rate);
|
|
break;
|
|
default:
|
|
return -ENOENT;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static struct clk_ops px30_pmuclk_ops = {
|
|
.get_rate = px30_pmuclk_get_rate,
|
|
.set_rate = px30_pmuclk_set_rate,
|
|
};
|
|
|
|
static void px30_pmuclk_init(struct px30_pmuclk_priv *priv)
|
|
{
|
|
priv->gpll_hz = px30_pmuclk_get_gpll_rate(priv);
|
|
px30_pmuclk_set_gpll_rate(priv, GPLL_HZ);
|
|
|
|
px30_pclk_pmu_set_pmuclk(priv, PCLK_PMU_HZ);
|
|
}
|
|
|
|
static int px30_pmuclk_probe(struct udevice *dev)
|
|
{
|
|
struct px30_pmuclk_priv *priv = dev_get_priv(dev);
|
|
|
|
px30_pmuclk_init(priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int px30_pmuclk_ofdata_to_platdata(struct udevice *dev)
|
|
{
|
|
struct px30_pmuclk_priv *priv = dev_get_priv(dev);
|
|
|
|
priv->pmucru = dev_read_addr_ptr(dev);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static const struct udevice_id px30_pmuclk_ids[] = {
|
|
{ .compatible = "rockchip,px30-pmucru" },
|
|
{ }
|
|
};
|
|
|
|
U_BOOT_DRIVER(rockchip_px30_pmucru) = {
|
|
.name = "rockchip_px30_pmucru",
|
|
.id = UCLASS_CLK,
|
|
.of_match = px30_pmuclk_ids,
|
|
.priv_auto_alloc_size = sizeof(struct px30_pmuclk_priv),
|
|
.ofdata_to_platdata = px30_pmuclk_ofdata_to_platdata,
|
|
.ops = &px30_pmuclk_ops,
|
|
.probe = px30_pmuclk_probe,
|
|
};
|