diff options
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/clock-k2hk.c | 113 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/clock.c | 148 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-keystone/clock-k2hk.h | 21 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-keystone/clock.h | 28 |
5 files changed, 166 insertions, 145 deletions
diff --git a/arch/arm/cpu/armv7/keystone/Makefile b/arch/arm/cpu/armv7/keystone/Makefile index 64e42a6..74c5160 100644 --- a/arch/arm/cpu/armv7/keystone/Makefile +++ b/arch/arm/cpu/armv7/keystone/Makefile @@ -8,6 +8,7 @@ obj-y += init.o obj-y += psc.o obj-y += clock.o +obj-$(CONFIG_SOC_K2HK) += clock-k2hk.o obj-y += cmd_clock.o obj-y += cmd_mon.o obj-$(CONFIG_DRIVER_TI_KEYSTONE_NET) += keystone_nav.o diff --git a/arch/arm/cpu/armv7/keystone/clock-k2hk.c b/arch/arm/cpu/armv7/keystone/clock-k2hk.c new file mode 100644 index 0000000..96a9f72 --- /dev/null +++ b/arch/arm/cpu/armv7/keystone/clock-k2hk.c @@ -0,0 +1,113 @@ +/* + * Keystone2: get clk rate for K2HK + * + * (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}, + [DDR3A_PLL] = {KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1}, + [DDR3B_PLL] = {KS2_DDR3BPLLCTL0, KS2_DDR3BPLLCTL1}, +}; + +/** + * 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 DDR3A_PLL: + ret = external_clk[ddr3a_clk]; + reg = KS2_DDR3APLLCTL0; + break; + case DDR3B_PLL: + ret = external_clk[ddr3b_clk]; + reg = KS2_DDR3BPLLCTL0; + 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 ddr3a_pll_clk: return pll_freq_get(DDR3A_PLL); + case ddr3b_pll_clk: return pll_freq_get(DDR3B_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; +} diff --git a/arch/arm/cpu/armv7/keystone/clock.c b/arch/arm/cpu/armv7/keystone/clock.c index f905fdc..42b664b 100644 --- a/arch/arm/cpu/armv7/keystone/clock.c +++ b/arch/arm/cpu/armv7/keystone/clock.c @@ -8,9 +8,6 @@ */ #include <common.h> -#include <asm-generic/errno.h> -#include <asm/io.h> -#include <asm/processor.h> #include <asm/arch/clock.h> #include <asm/arch/clock_defs.h> @@ -24,106 +21,6 @@ static void wait_for_completion(const struct pll_init_data *data) } } -struct pll_regs { - u32 reg0, reg1; -}; - -static const struct pll_regs pll_regs[] = { - [CORE_PLL] = { KS2_MAINPLLCTL0, KS2_MAINPLLCTL1}, - [PASS_PLL] = { KS2_PASSPLLCTL0, KS2_PASSPLLCTL1}, - [TETRIS_PLL] = { KS2_ARMPLLCTL0, KS2_ARMPLLCTL1}, - [DDR3A_PLL] = { KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1}, - [DDR3B_PLL] = { KS2_DDR3BPLLCTL0, KS2_DDR3BPLLCTL1}, -}; - -/* Fout = Fref * NF(mult) / NR(prediv) / OD */ -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 DDR3A_PLL: - ret = external_clk[ddr3a_clk]; - reg = KS2_DDR3APLLCTL0; - break; - case DDR3B_PLL: - ret = external_clk[ddr3b_clk]; - reg = KS2_DDR3BPLLCTL0; - 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 ddr3a_pll_clk: return pll_freq_get(DDR3A_PLL); - case ddr3b_pll_clk: return pll_freq_get(DDR3B_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; -} - void init_pll(const struct pll_init_data *data) { u32 tmp, tmp_ctl, pllm, plld, pllod, bwadj; @@ -139,7 +36,7 @@ void init_pll(const struct pll_init_data *data) tmp = pllctl_reg_read(data->pll, secctl); if (tmp & (PLLCTL_BYPASS)) { - setbits_le32(pll_regs[data->pll].reg1, + setbits_le32(keystone_pll_regs[data->pll].reg1, BIT(MAIN_ENSAT_OFFSET)); pllctl_reg_clrbits(data->pll, ctl, PLLCTL_PLLEN | @@ -159,21 +56,24 @@ void init_pll(const struct pll_init_data *data) pllctl_reg_write(data->pll, mult, pllm & PLLM_MULT_LO_MASK); - clrsetbits_le32(pll_regs[data->pll].reg0, PLLM_MULT_HI_SMASK, - (pllm << 6)); + clrsetbits_le32(keystone_pll_regs[data->pll].reg0, + PLLM_MULT_HI_SMASK, (pllm << 6)); /* Set the BWADJ (12 bit field) */ tmp_ctl = pllm >> 1; /* Divide the pllm by 2 */ - clrsetbits_le32(pll_regs[data->pll].reg0, PLL_BWADJ_LO_SMASK, + clrsetbits_le32(keystone_pll_regs[data->pll].reg0, + PLL_BWADJ_LO_SMASK, (tmp_ctl << PLL_BWADJ_LO_SHIFT)); - clrsetbits_le32(pll_regs[data->pll].reg1, PLL_BWADJ_HI_MASK, + clrsetbits_le32(keystone_pll_regs[data->pll].reg1, + PLL_BWADJ_HI_MASK, (tmp_ctl >> 8)); /* * Set the pll divider (6 bit field) * * PLLD[5:0] is located in MAINPLLCTL0 */ - clrsetbits_le32(pll_regs[data->pll].reg0, PLL_DIV_MASK, plld); + clrsetbits_le32(keystone_pll_regs[data->pll].reg0, + PLL_DIV_MASK, plld); /* Set the OUTPUT DIVIDE (4 bit field) in SECCTL */ pllctl_reg_rmw(data->pll, secctl, PLL_CLKOD_SMASK, @@ -209,14 +109,14 @@ void init_pll(const struct pll_init_data *data) } else if (data->pll == TETRIS_PLL) { bwadj = pllm >> 1; /* 1.5 Set PLLCTL0[BYPASS] =1 (enable bypass), */ - setbits_le32(pll_regs[data->pll].reg0, PLLCTL_BYPASS); + setbits_le32(keystone_pll_regs[data->pll].reg0, PLLCTL_BYPASS); /* * Set CHIPMISCCTL1[13] = 0 (enable glitchfree bypass) * only applicable for Kepler */ clrbits_le32(KS2_MISC_CTRL, KS2_ARM_PLL_EN); /* 2 In PLLCTL1, write PLLRST = 1 (PLL is reset) */ - setbits_le32(pll_regs[data->pll].reg1 , + setbits_le32(keystone_pll_regs[data->pll].reg1 , PLL_PLLRST | PLLCTL_ENSAT); /* @@ -229,13 +129,13 @@ void init_pll(const struct pll_init_data *data) (pllm << 6) | (plld & PLL_DIV_MASK) | (pllod << PLL_CLKOD_SHIFT) | PLLCTL_BYPASS; - __raw_writel(tmp, pll_regs[data->pll].reg0); + __raw_writel(tmp, keystone_pll_regs[data->pll].reg0); /* Set BWADJ[11:8] bits */ - tmp = __raw_readl(pll_regs[data->pll].reg1); + tmp = __raw_readl(keystone_pll_regs[data->pll].reg1); tmp &= ~(PLL_BWADJ_HI_MASK); tmp |= ((bwadj>>8) & PLL_BWADJ_HI_MASK); - __raw_writel(tmp, pll_regs[data->pll].reg1); + __raw_writel(tmp, keystone_pll_regs[data->pll].reg1); /* * 5 Wait for at least 5 us based on the reference * clock (PLL reset time) @@ -243,26 +143,26 @@ void init_pll(const struct pll_init_data *data) sdelay(21000); /* Wait for a minimum of 7 us*/ /* 6 In PLLCTL1, write PLLRST = 0 (PLL reset is released) */ - clrbits_le32(pll_regs[data->pll].reg1, PLL_PLLRST); + clrbits_le32(keystone_pll_regs[data->pll].reg1, PLL_PLLRST); /* * 7 Wait for at least 500 * REFCLK cycles * (PLLD + 1) * (PLL lock time) */ sdelay(105000); /* 8 disable bypass */ - clrbits_le32(pll_regs[data->pll].reg0, PLLCTL_BYPASS); + clrbits_le32(keystone_pll_regs[data->pll].reg0, PLLCTL_BYPASS); /* * 9 Set CHIPMISCCTL1[13] = 1 (disable glitchfree bypass) * only applicable for Kepler */ setbits_le32(KS2_MISC_CTRL, KS2_ARM_PLL_EN); } else { - setbits_le32(pll_regs[data->pll].reg1, PLLCTL_ENSAT); + setbits_le32(keystone_pll_regs[data->pll].reg1, PLLCTL_ENSAT); /* * process keeps state of Bypass bit while programming * all other DDR PLL settings */ - tmp = __raw_readl(pll_regs[data->pll].reg0); + tmp = __raw_readl(keystone_pll_regs[data->pll].reg0); tmp &= PLLCTL_BYPASS; /* clear everything except Bypass */ /* @@ -274,10 +174,10 @@ void init_pll(const struct pll_init_data *data) (pllm << PLL_MULT_SHIFT) | (plld & PLL_DIV_MASK) | (pllod << PLL_CLKOD_SHIFT); - __raw_writel(tmp, pll_regs[data->pll].reg0); + __raw_writel(tmp, keystone_pll_regs[data->pll].reg0); /* Set BWADJ[11:8] bits */ - tmp = __raw_readl(pll_regs[data->pll].reg1); + tmp = __raw_readl(keystone_pll_regs[data->pll].reg1); tmp &= ~(PLL_BWADJ_HI_MASK); tmp |= ((bwadj >> 8) & PLL_BWADJ_HI_MASK); @@ -285,20 +185,20 @@ void init_pll(const struct pll_init_data *data) if (data->pll == PASS_PLL) tmp |= PLLCTL_PAPLL; - __raw_writel(tmp, pll_regs[data->pll].reg1); + __raw_writel(tmp, keystone_pll_regs[data->pll].reg1); /* Reset bit: bit 14 for both DDR3 & PASS PLL */ tmp = PLL_PLLRST; /* Set RESET bit = 1 */ - setbits_le32(pll_regs[data->pll].reg1, tmp); + setbits_le32(keystone_pll_regs[data->pll].reg1, tmp); /* Wait for a minimum of 7 us*/ sdelay(21000); /* Clear RESET bit */ - clrbits_le32(pll_regs[data->pll].reg1, tmp); + clrbits_le32(keystone_pll_regs[data->pll].reg1, tmp); sdelay(105000); /* clear BYPASS (Enable PLL Mode) */ - clrbits_le32(pll_regs[data->pll].reg0, PLLCTL_BYPASS); + clrbits_le32(keystone_pll_regs[data->pll].reg0, PLLCTL_BYPASS); sdelay(21000); /* Wait for a minimum of 7 us*/ } diff --git a/arch/arm/include/asm/arch-keystone/clock-k2hk.h b/arch/arm/include/asm/arch-keystone/clock-k2hk.h index ed1225c..784a0be 100644 --- a/arch/arm/include/asm/arch-keystone/clock-k2hk.h +++ b/arch/arm/include/asm/arch-keystone/clock-k2hk.h @@ -10,10 +10,6 @@ #ifndef __ASM_ARCH_CLOCK_K2HK_H #define __ASM_ARCH_CLOCK_K2HK_H -#include <asm/arch/hardware.h> - -#ifndef __ASSEMBLY__ - enum ext_clk_e { sys_clk, alt_core_clk, @@ -66,15 +62,6 @@ enum pll_type_e { DDR3A_PLL, DDR3B_PLL, }; -#define MAIN_PLL CORE_PLL - -/* PLL configuration data */ -struct pll_init_data { - int pll; - int pll_m; /* PLL Multiplier */ - int pll_d; /* PLL divider */ - int pll_od; /* PLL output divider */ -}; #define CORE_PLL_799 {CORE_PLL, 13, 1, 2} #define CORE_PLL_983 {CORE_PLL, 16, 1, 2} @@ -98,12 +85,4 @@ struct pll_init_data { #define DDR3_PLL_800(x) {DDR3##x##_PLL, 16, 1, 2} #define DDR3_PLL_333(x) {DDR3##x##_PLL, 20, 1, 6} -void init_plls(int num_pll, struct pll_init_data *config); -void init_pll(const struct pll_init_data *data); -unsigned long clk_get_rate(unsigned int clk); -unsigned long clk_round_rate(unsigned int clk, unsigned long hz); -int clk_set_rate(unsigned int clk, unsigned long hz); - -#endif - #endif diff --git a/arch/arm/include/asm/arch-keystone/clock.h b/arch/arm/include/asm/arch-keystone/clock.h index 324501b..c7da352 100644 --- a/arch/arm/include/asm/arch-keystone/clock.h +++ b/arch/arm/include/asm/arch-keystone/clock.h @@ -10,8 +10,36 @@ #ifndef __ASM_ARCH_CLOCK_H #define __ASM_ARCH_CLOCK_H +#ifndef __ASSEMBLY__ + #ifdef CONFIG_SOC_K2HK #include <asm/arch/clock-k2hk.h> #endif +#define MAIN_PLL CORE_PLL + +#include <asm/types.h> + +struct keystone_pll_regs { + u32 reg0; + u32 reg1; +}; + +/* PLL configuration data */ +struct pll_init_data { + int pll; + int pll_m; /* PLL Multiplier */ + int pll_d; /* PLL divider */ + int pll_od; /* PLL output divider */ +}; + +extern const struct keystone_pll_regs keystone_pll_regs[]; + +void init_plls(int num_pll, struct pll_init_data *config); +void init_pll(const struct pll_init_data *data); +unsigned long clk_get_rate(unsigned int clk); +unsigned long clk_round_rate(unsigned int clk, unsigned long hz); +int clk_set_rate(unsigned int clk, unsigned long hz); + +#endif #endif |