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arm: am33xx: Add support for mulitiple PLL input frequencies

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am335x supports various sysclk frequencies which can be determined
using sysboot pins. PLLs should be configures based on this
sysclk frequency. Add PLL configurations for all supported
frequencies.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Lokesh Vutla 2017-05-05 12:59:10 +05:30 committed by Tom Rini
parent 0650798824
commit fbd6295da4
10 changed files with 172 additions and 68 deletions
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7
arch/arm/include/asm/arch-am33xx/clock.h
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@ -12,6 +12,7 @@
#define _CLOCKS_H_
#include <asm/arch/clocks_am33xx.h>
#include <asm/arch/hardware.h>
#ifdef CONFIG_TI81XX
#include <asm/arch/clock_ti81xx.h>
@ -103,6 +104,12 @@ extern const struct dpll_regs dpll_mpu_regs;
extern const struct dpll_regs dpll_core_regs;
extern const struct dpll_regs dpll_per_regs;
extern const struct dpll_regs dpll_ddr_regs;
extern const struct dpll_params dpll_mpu_opp[NUM_CRYSTAL_FREQ][NUM_OPPS];
extern const struct dpll_params dpll_core_1000MHz[NUM_CRYSTAL_FREQ];
extern const struct dpll_params dpll_per_192MHz[NUM_CRYSTAL_FREQ];
extern const struct dpll_params dpll_ddr2_266MHz[NUM_CRYSTAL_FREQ];
extern const struct dpll_params dpll_ddr3_303MHz[NUM_CRYSTAL_FREQ];
extern const struct dpll_params dpll_ddr3_400MHz[NUM_CRYSTAL_FREQ];
extern struct cm_wkuppll *const cmwkup;

2
arch/arm/include/asm/arch-am33xx/clocks_am33xx.h
View File

@ -26,6 +26,8 @@
#define CM_DLL_CTRL_NO_OVERRIDE 0x0
#define CM_DLL_READYST 0x4
#define NUM_OPPS 6
extern void enable_dmm_clocks(void);
extern const struct dpll_params dpll_core_opp100;
extern struct dpll_params dpll_mpu_opp100;

13
arch/arm/include/asm/arch-am33xx/hardware.h
View File

@ -61,5 +61,18 @@
/* CPSW Config space */
#define CPSW_BASE 0x4A100000
/* Control status register */
#define CTRL_CRYSTAL_FREQ_SRC_MASK (1 << 31)
#define CTRL_CRYSTAL_FREQ_SRC_SHIFT 31
#define CTRL_CRYSTAL_FREQ_SELECTION_MASK (0x3 << 29)
#define CTRL_CRYSTAL_FREQ_SELECTION_SHIFT 29
#define CTRL_SYSBOOT_15_14_MASK (0x3 << 22)
#define CTRL_SYSBOOT_15_14_SHIFT 22
#define CTRL_CRYSTAL_FREQ_SRC_SYSBOOT 0x0
#define CTRL_CRYSTAL_FREQ_SRC_EFUSE 0x1
#define NUM_CRYSTAL_FREQ 0x4
int clk_get(int clk);
#endif /* __AM33XX_HARDWARE_H */

13
arch/arm/include/asm/arch-am33xx/hardware_am43xx.h
View File

@ -85,19 +85,6 @@
#define USBOTGSSX_CLKCTRL_OPTFCLKEN_REFCLK960 (1 << 8)
#define USBPHY0_CLKCTRL_OPTFCLKEN_CLK32K (1 << 8)
/* Control status register */
#define CTRL_CRYSTAL_FREQ_SRC_MASK (1 << 31)
#define CTRL_CRYSTAL_FREQ_SRC_SHIFT 31
#define CTRL_CRYSTAL_FREQ_SELECTION_MASK (0x3 << 29)
#define CTRL_CRYSTAL_FREQ_SELECTION_SHIFT 29
#define CTRL_SYSBOOT_15_14_MASK (0x3 << 22)
#define CTRL_SYSBOOT_15_14_SHIFT 22
#define CTRL_CRYSTAL_FREQ_SRC_SYSBOOT 0x0
#define CTRL_CRYSTAL_FREQ_SRC_EFUSE 0x1
#define NUM_CRYSTAL_FREQ 0x4
/* EDMA3 Base Address */
#define EDMA3_BASE 0x49000000

1
arch/arm/include/asm/arch-am33xx/sys_proto.h
View File

@ -46,3 +46,4 @@ int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency);
void enable_usb_clocks(int index);
void disable_usb_clocks(int index);
void do_board_detect(void);
u32 get_sys_clk_index(void);

2
arch/arm/mach-omap2/am33xx/board.c
View File

@ -242,8 +242,6 @@ int board_early_init_f(void)
*/
__weak void am33xx_spl_board_init(void)
{
do_setup_dpll(&dpll_core_regs, &dpll_core_opp100);
do_setup_dpll(&dpll_mpu_regs, &dpll_mpu_opp100);
}
#if defined(CONFIG_SPL_AM33XX_ENABLE_RTC32K_OSC)

89
arch/arm/mach-omap2/am33xx/clock_am33xx.c
View File

@ -10,6 +10,7 @@
#include <common.h>
#include <asm/arch/cpu.h>
#include <asm/arch/sys_proto.h>
#include <asm/arch/clock.h>
#include <asm/arch/hardware.h>
#include <asm/io.h>
@ -55,26 +56,94 @@ struct dpll_params dpll_mpu_opp100 = {
CONFIG_SYS_MPUCLK, OSC-1, 1, -1, -1, -1, -1};
const struct dpll_params dpll_core_opp100 = {
1000, OSC-1, -1, -1, 10, 8, 4};
const struct dpll_params dpll_mpu = {
MPUPLL_M_300, OSC-1, 1, -1, -1, -1, -1};
const struct dpll_params dpll_core = {
50, OSC-1, -1, -1, 1, 1, 1};
const struct dpll_params dpll_per = {
960, OSC-1, 5, -1, -1, -1, -1};
const struct dpll_params *get_dpll_mpu_params(void)
const struct dpll_params dpll_mpu_opp[NUM_CRYSTAL_FREQ][NUM_OPPS] = {
{ /* 19.2 MHz */
{125, 3, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{125, 3, 1, -1, -1, -1, -1}, /* OPP 100 */
{150, 3, 1, -1, -1, -1, -1}, /* OPP 120 */
{125, 2, 1, -1, -1, -1, -1}, /* OPP TB */
{625, 11, 1, -1, -1, -1, -1} /* OPP NT */
},
{ /* 24 MHz */
{25, 0, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{25, 0, 1, -1, -1, -1, -1}, /* OPP 100 */
{30, 0, 1, -1, -1, -1, -1}, /* OPP 120 */
{100, 3, 1, -1, -1, -1, -1}, /* OPP TB */
{125, 2, 1, -1, -1, -1, -1} /* OPP NT */
},
{ /* 25 MHz */
{24, 0, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{24, 0, 1, -1, -1, -1, -1}, /* OPP 100 */
{144, 4, 1, -1, -1, -1, -1}, /* OPP 120 */
{32, 0, 1, -1, -1, -1, -1}, /* OPP TB */
{40, 0, 1, -1, -1, -1, -1} /* OPP NT */
},
{ /* 26 MHz */
{300, 12, 2, -1, -1, -1, -1}, /* OPP 50 */
{-1, -1, -1, -1, -1, -1, -1}, /* OPP RESERVED */
{300, 12, 1, -1, -1, -1, -1}, /* OPP 100 */
{360, 12, 1, -1, -1, -1, -1}, /* OPP 120 */
{400, 12, 1, -1, -1, -1, -1}, /* OPP TB */
{500, 12, 1, -1, -1, -1, -1} /* OPP NT */
},
};
const struct dpll_params dpll_core_1000MHz[NUM_CRYSTAL_FREQ] = {
{625, 11, -1, -1, 10, 8, 4}, /* 19.2 MHz */
{125, 2, -1, -1, 10, 8, 4}, /* 24 MHz */
{40, 0, -1, -1, 10, 8, 4}, /* 25 MHz */
{500, 12, -1, -1, 10, 8, 4} /* 26 MHz */
};
const struct dpll_params dpll_per_192MHz[NUM_CRYSTAL_FREQ] = {
{400, 7, 5, -1, -1, -1, -1}, /* 19.2 MHz */
{400, 9, 5, -1, -1, -1, -1}, /* 24 MHz */
{384, 9, 5, -1, -1, -1, -1}, /* 25 MHz */
{480, 12, 5, -1, -1, -1, -1} /* 26 MHz */
};
const struct dpll_params dpll_ddr3_303MHz[NUM_CRYSTAL_FREQ] = {
{505, 15, 2, -1, -1, -1, -1}, /*19.2*/
{101, 3, 2, -1, -1, -1, -1}, /* 24 MHz */
{303, 24, 1, -1, 4, -1, -1}, /* 25 MHz */
{303, 12, 2, -1, 4, -1, -1} /* 26 MHz */
};
const struct dpll_params dpll_ddr3_400MHz[NUM_CRYSTAL_FREQ] = {
{125, 5, 1, -1, -1, -1, -1}, /*19.2*/
{50, 2, 1, -1, -1, -1, -1}, /* 24 MHz */
{16, 0, 1, -1, 4, -1, -1}, /* 25 MHz */
{200, 12, 1, -1, 4, -1, -1} /* 26 MHz */
};
const struct dpll_params dpll_ddr2_266MHz[NUM_CRYSTAL_FREQ] = {
{665, 47, 1, -1, -1, -1, -1}, /*19.2*/
{133, 11, 1, -1, -1, -1, -1}, /* 24 MHz */
{266, 24, 1, -1, 4, -1, -1}, /* 25 MHz */
{133, 12, 1, -1, 4, -1, -1} /* 26 MHz */
};
__weak const struct dpll_params *get_dpll_mpu_params(void)
{
return &dpll_mpu;
return &dpll_mpu_opp100;
}
const struct dpll_params *get_dpll_core_params(void)
{
return &dpll_core;
int ind = get_sys_clk_index();
return &dpll_core_1000MHz[ind];
}
const struct dpll_params *get_dpll_per_params(void)
{
return &dpll_per;
int ind = get_sys_clk_index();
return &dpll_per_192MHz[ind];
}
void setup_clocks_for_console(void)

18
arch/arm/mach-omap2/am33xx/sys_info.c
View File

@ -68,6 +68,24 @@ u32 get_sysboot_value(void)
return readl(&cstat->statusreg) & SYSBOOT_MASK;
}
u32 get_sys_clk_index(void)
{
struct ctrl_stat *ctrl = (struct ctrl_stat *)CTRL_BASE;
u32 ind = readl(&ctrl->statusreg);
#ifdef CONFIG_AM43XX
u32 src;
src = (ind & CTRL_CRYSTAL_FREQ_SRC_MASK) >> CTRL_CRYSTAL_FREQ_SRC_SHIFT;
if (src == CTRL_CRYSTAL_FREQ_SRC_EFUSE) /* Value read from EFUSE */
return ((ind & CTRL_CRYSTAL_FREQ_SELECTION_MASK) >>
CTRL_CRYSTAL_FREQ_SELECTION_SHIFT);
else /* Value read from SYS BOOT pins */
#endif
return ((ind & CTRL_SYSBOOT_15_14_MASK) >>
CTRL_SYSBOOT_15_14_SHIFT);
}
#ifdef CONFIG_DISPLAY_CPUINFO
static char *cpu_revs[] = {
"1.0",

74
board/ti/am335x/board.c
View File

@ -256,24 +256,62 @@ int spl_start_uboot(void)
}
#endif
#define OSC (V_OSCK/1000000)
const struct dpll_params dpll_ddr = {
266, OSC-1, 1, -1, -1, -1, -1};
const struct dpll_params dpll_ddr_evm_sk = {
303, OSC-1, 1, -1, -1, -1, -1};
const struct dpll_params dpll_ddr_bone_black = {
400, OSC-1, 1, -1, -1, -1, -1};
const struct dpll_params *get_dpll_ddr_params(void)
{
int ind = get_sys_clk_index();
if (board_is_evm_sk())
return &dpll_ddr_evm_sk;
return &dpll_ddr3_303MHz[ind];
else if (board_is_bone_lt() || board_is_icev2())
return &dpll_ddr_bone_black;
return &dpll_ddr3_400MHz[ind];
else if (board_is_evm_15_or_later())
return &dpll_ddr_evm_sk;
return &dpll_ddr3_303MHz[ind];
else
return &dpll_ddr;
return &dpll_ddr2_266MHz[ind];
}
static u8 bone_not_connected_to_ac_power(void)
{
if (board_is_bone()) {
uchar pmic_status_reg;
if (tps65217_reg_read(TPS65217_STATUS,
&pmic_status_reg))
return 1;
if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) {
puts("No AC power, switching to default OPP\n");
return 1;
}
}
return 0;
}
const struct dpll_params *get_dpll_mpu_params(void)
{
int ind = get_sys_clk_index();
int freq = am335x_get_efuse_mpu_max_freq(cdev);
if (bone_not_connected_to_ac_power())
freq = MPUPLL_M_600;
if (board_is_bone_lt())
freq = MPUPLL_M_1000;
switch (freq) {
case MPUPLL_M_1000:
return &dpll_mpu_opp[ind][5];
case MPUPLL_M_800:
return &dpll_mpu_opp[ind][4];
case MPUPLL_M_720:
return &dpll_mpu_opp[ind][3];
case MPUPLL_M_600:
return &dpll_mpu_opp[ind][2];
case MPUPLL_M_500:
return &dpll_mpu_opp100;
case MPUPLL_M_300:
return &dpll_mpu_opp[ind][0];
}
return &dpll_mpu_opp[ind][0];
}
static void scale_vcores_bone(int freq)
@ -294,16 +332,8 @@ static void scale_vcores_bone(int freq)
* On Beaglebone White we need to ensure we have AC power
* before increasing the frequency.
*/
if (board_is_bone()) {
uchar pmic_status_reg;
if (tps65217_reg_read(TPS65217_STATUS,
&pmic_status_reg))
return;
if (!(pmic_status_reg & TPS65217_PWR_SRC_AC_BITMASK)) {
puts("No AC power, switching to default OPP\n");
freq = MPUPLL_M_600;
}
}
if (bone_not_connected_to_ac_power())
freq = MPUPLL_M_600;
/*
* Override what we have detected since we know if we have

21
board/ti/am43xx/board.c
View File

@ -49,8 +49,6 @@ void do_board_detect(void)
#ifndef CONFIG_SKIP_LOWLEVEL_INIT
#define NUM_OPPS 6
const struct dpll_params dpll_mpu[NUM_CRYSTAL_FREQ][NUM_OPPS] = {
{ /* 19.2 MHz */
{125, 3, 2, -1, -1, -1, -1}, /* OPP 50 */
@ -317,25 +315,6 @@ void emif_get_ext_phy_ctrl_const_regs(const u32 **regs, u32 *size)
return;
}
/*
* get_sys_clk_index : returns the index of the sys_clk read from
* ctrl status register. This value is either
* read from efuse or sysboot pins.
*/
static u32 get_sys_clk_index(void)
{
struct ctrl_stat *ctrl = (struct ctrl_stat *)CTRL_BASE;
u32 ind = readl(&ctrl->statusreg), src;
src = (ind & CTRL_CRYSTAL_FREQ_SRC_MASK) >> CTRL_CRYSTAL_FREQ_SRC_SHIFT;
if (src == CTRL_CRYSTAL_FREQ_SRC_EFUSE) /* Value read from EFUSE */
return ((ind & CTRL_CRYSTAL_FREQ_SELECTION_MASK) >>
CTRL_CRYSTAL_FREQ_SELECTION_SHIFT);
else /* Value read from SYS BOOT pins */
return ((ind & CTRL_SYSBOOT_15_14_MASK) >>
CTRL_SYSBOOT_15_14_SHIFT);
}
const struct dpll_params *get_dpll_ddr_params(void)
{
int ind = get_sys_clk_index();