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keystone2: clock: add K2L clock definitions and commands

Browse Source 
This patch adds clock definitions and commands to support Keystone II
K2L SOC.

Acked-by: Vitaly Andrianov <vitalya@ti.com>
Signed-off-by: Hao Zhang <hzhang@ti.com>
Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
This commit is contained in:
Hao Zhang 2014-10-22 16:32:29 +03:00 committed by Tom Rini
parent c4995a8282
commit 61d122583f
4 changed files with 232 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/cpu/armv7/keystone/Makefile
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@ -10,6 +10,7 @@ obj-y += psc.o
obj-y += clock.o
obj-$(CONFIG_SOC_K2HK) += clock-k2hk.o
obj-$(CONFIG_SOC_K2E) += clock-k2e.o
obj-$(CONFIG_SOC_K2L) += clock-k2l.o
obj-y += cmd_clock.o
obj-y += cmd_mon.o
obj-y += msmc.o

138
arch/arm/cpu/armv7/keystone/clock-k2l.c Normal file
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@ -0,0 +1,138 @@
/*
* Keystone2: get clk rate for K2L
*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/arch/clock.h>
#include <asm/arch/clock_defs.h>
const struct keystone_pll_regs keystone_pll_regs[] = {
[CORE_PLL] = {KS2_MAINPLLCTL0, KS2_MAINPLLCTL1},
[PASS_PLL] = {KS2_PASSPLLCTL0, KS2_PASSPLLCTL1},
[TETRIS_PLL] = {KS2_ARMPLLCTL0, KS2_ARMPLLCTL1},
[DDR3_PLL] = {KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1},
};
int dev_speeds[] = {
SPD800,
SPD1000,
SPD1200,
SPD800,
SPD800,
SPD800,
SPD800,
SPD800,
SPD1200,
SPD1000,
SPD800,
SPD800,
SPD800,
};
int arm_speeds[] = {
SPD800,
SPD1000,
SPD1200,
SPD1350,
SPD1400,
SPD800,
SPD1400,
SPD1350,
SPD1200,
SPD1000,
SPD800,
SPD800,
SPD800,
};
/**
* pll_freq_get - get pll frequency
* Fout = Fref * NF(mult) / NR(prediv) / OD
* @pll: pll identifier
*/
static unsigned long pll_freq_get(int pll)
{
unsigned long mult = 1, prediv = 1, output_div = 2;
unsigned long ret;
u32 tmp, reg;
if (pll == CORE_PLL) {
ret = external_clk[sys_clk];
if (pllctl_reg_read(pll, ctl) & PLLCTL_PLLEN) {
/* PLL mode */
tmp = __raw_readl(KS2_MAINPLLCTL0);
prediv = (tmp & PLL_DIV_MASK) + 1;
mult = (((tmp & PLLM_MULT_HI_SMASK) >> 6) |
(pllctl_reg_read(pll, mult) &
PLLM_MULT_LO_MASK)) + 1;
output_div = ((pllctl_reg_read(pll, secctl) >>
PLL_CLKOD_SHIFT) & PLL_CLKOD_MASK) + 1;
ret = ret / prediv / output_div * mult;
}
} else {
switch (pll) {
case PASS_PLL:
ret = external_clk[pa_clk];
reg = KS2_PASSPLLCTL0;
break;
case TETRIS_PLL:
ret = external_clk[tetris_clk];
reg = KS2_ARMPLLCTL0;
break;
case DDR3_PLL:
ret = external_clk[ddr3_clk];
reg = KS2_DDR3APLLCTL0;
break;
default:
return 0;
}
tmp = __raw_readl(reg);
if (!(tmp & PLLCTL_BYPASS)) {
/* Bypass disabled */
prediv = (tmp & PLL_DIV_MASK) + 1;
mult = ((tmp >> PLL_MULT_SHIFT) & PLL_MULT_MASK) + 1;
output_div = ((tmp >> PLL_CLKOD_SHIFT) &
PLL_CLKOD_MASK) + 1;
ret = ((ret / prediv) * mult) / output_div;
}
}
return ret;
}
unsigned long clk_get_rate(unsigned int clk)
{
switch (clk) {
case core_pll_clk: return pll_freq_get(CORE_PLL);
case pass_pll_clk: return pll_freq_get(PASS_PLL);
case tetris_pll_clk: return pll_freq_get(TETRIS_PLL);
case ddr3_pll_clk: return pll_freq_get(DDR3_PLL);
case sys_clk0_1_clk:
case sys_clk0_clk: return pll_freq_get(CORE_PLL) / pll0div_read(1);
case sys_clk1_clk: return pll_freq_get(CORE_PLL) / pll0div_read(2);
case sys_clk2_clk: return pll_freq_get(CORE_PLL) / pll0div_read(3);
case sys_clk3_clk: return pll_freq_get(CORE_PLL) / pll0div_read(4);
case sys_clk0_2_clk: return clk_get_rate(sys_clk0_clk) / 2;
case sys_clk0_3_clk: return clk_get_rate(sys_clk0_clk) / 3;
case sys_clk0_4_clk: return clk_get_rate(sys_clk0_clk) / 4;
case sys_clk0_6_clk: return clk_get_rate(sys_clk0_clk) / 6;
case sys_clk0_8_clk: return clk_get_rate(sys_clk0_clk) / 8;
case sys_clk0_12_clk: return clk_get_rate(sys_clk0_clk) / 12;
case sys_clk0_24_clk: return clk_get_rate(sys_clk0_clk) / 24;
case sys_clk1_3_clk: return clk_get_rate(sys_clk1_clk) / 3;
case sys_clk1_4_clk: return clk_get_rate(sys_clk1_clk) / 4;
case sys_clk1_6_clk: return clk_get_rate(sys_clk1_clk) / 6;
case sys_clk1_12_clk: return clk_get_rate(sys_clk1_clk) / 12;
default:
break;
}
return 0;
}

89
arch/arm/include/asm/arch-keystone/clock-k2l.h Normal file
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@ -0,0 +1,89 @@
/*
* K2L: Clock management APIs
*
* (C) Copyright 2012-2014
* Texas Instruments Incorporated, <www.ti.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __ASM_ARCH_CLOCK_K2L_H
#define __ASM_ARCH_CLOCK_K2L_H
enum ext_clk_e {
sys_clk,
alt_core_clk,
pa_clk,
tetris_clk,
ddr3_clk,
pcie_clk,
sgmii_clk,
usb_clk,
rp1_clk,
ext_clk_count /* number of external clocks */
};
extern unsigned int external_clk[ext_clk_count];
#define CLK_LIST(CLK)\
CLK(0, core_pll_clk)\
CLK(1, pass_pll_clk)\
CLK(2, tetris_pll_clk)\
CLK(3, ddr3_pll_clk)\
CLK(4, sys_clk0_clk)\
CLK(5, sys_clk0_1_clk)\
CLK(6, sys_clk0_2_clk)\
CLK(7, sys_clk0_3_clk)\
CLK(8, sys_clk0_4_clk)\
CLK(9, sys_clk0_6_clk)\
CLK(10, sys_clk0_8_clk)\
CLK(11, sys_clk0_12_clk)\
CLK(12, sys_clk0_24_clk)\
CLK(13, sys_clk1_clk)\
CLK(14, sys_clk1_3_clk)\
CLK(15, sys_clk1_4_clk)\
CLK(16, sys_clk1_6_clk)\
CLK(17, sys_clk1_12_clk)\
CLK(18, sys_clk2_clk)\
CLK(19, sys_clk3_clk)\
#define PLLSET_CMD_LIST "<pa|arm|ddr3>"
#define KS2_CLK1_6 sys_clk0_6_clk
/* PLL identifiers */
enum pll_type_e {
CORE_PLL,
PASS_PLL,
TETRIS_PLL,
DDR3_PLL,
};
enum {
SPD800,
SPD1000,
SPD1200,
SPD1350,
SPD1400,
SPD_RSV
};
#define CORE_PLL_799 {CORE_PLL, 13, 1, 2}
#define CORE_PLL_983 {CORE_PLL, 16, 1, 2}
#define CORE_PLL_1167 {CORE_PLL, 19, 1, 2}
#define CORE_PLL_1228 {CORE_PLL, 20, 1, 2}
#define PASS_PLL_1228 {PASS_PLL, 20, 1, 2}
#define PASS_PLL_983 {PASS_PLL, 16, 1, 2}
#define PASS_PLL_1050 {PASS_PLL, 205, 12, 2}
#define TETRIS_PLL_491 {TETRIS_PLL, 8, 1, 2}
#define TETRIS_PLL_737 {TETRIS_PLL, 12, 1, 2}
#define TETRIS_PLL_799 {TETRIS_PLL, 13, 1, 2}
#define TETRIS_PLL_983 {TETRIS_PLL, 16, 1, 2}
#define TETRIS_PLL_1167 {TETRIS_PLL, 19, 1, 2}
#define TETRIS_PLL_1228 {TETRIS_PLL, 20, 1, 2}
#define DDR3_PLL_200 {DDR3_PLL, 4, 1, 2}
#define DDR3_PLL_400 {DDR3_PLL, 16, 1, 4}
#define DDR3_PLL_800 {DDR3_PLL, 16, 1, 2}
#define DDR3_PLL_333 {DDR3_PLL, 20, 1, 6}
#endif

4
arch/arm/include/asm/arch-keystone/clock.h
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@ -20,6 +20,10 @@
#include <asm/arch/clock-k2e.h>
#endif
#ifdef CONFIG_SOC_K2L
#include <asm/arch/clock-k2l.h>
#endif
#define MAIN_PLL CORE_PLL
#include <asm/types.h>