diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/clock-k2e.c | 101 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/clock.c | 2 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/keystone/cmd_clock.c | 31 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-keystone/clock-k2e.h | 68 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-keystone/clock.h | 4 |
6 files changed, 202 insertions, 5 deletions
diff --git a/arch/arm/cpu/armv7/keystone/Makefile b/arch/arm/cpu/armv7/keystone/Makefile index 74c516013a..f8519c0403 100644 --- a/arch/arm/cpu/armv7/keystone/Makefile +++ b/arch/arm/cpu/armv7/keystone/Makefile @@ -9,6 +9,7 @@ obj-y += init.o obj-y += psc.o obj-y += clock.o obj-$(CONFIG_SOC_K2HK) += clock-k2hk.o +obj-$(CONFIG_SOC_K2E) += clock-k2e.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-k2e.c b/arch/arm/cpu/armv7/keystone/clock-k2e.c new file mode 100644 index 0000000000..42092e1060 --- /dev/null +++ b/arch/arm/cpu/armv7/keystone/clock-k2e.c @@ -0,0 +1,101 @@ +/* + * Keystone2: get clk rate for K2E + * + * (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}, + [DDR3_PLL] = {KS2_DDR3APLLCTL0, KS2_DDR3APLLCTL1}, +}; + +/** + * 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 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 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; +} diff --git a/arch/arm/cpu/armv7/keystone/clock.c b/arch/arm/cpu/armv7/keystone/clock.c index 42b664b576..03c1d9f660 100644 --- a/arch/arm/cpu/armv7/keystone/clock.c +++ b/arch/arm/cpu/armv7/keystone/clock.c @@ -106,6 +106,7 @@ void init_pll(const struct pll_init_data *data) tmp = pllctl_reg_setbits(data->pll, ctl, PLLCTL_PLLEN); +#ifndef CONFIG_SOC_K2E } else if (data->pll == TETRIS_PLL) { bwadj = pllm >> 1; /* 1.5 Set PLLCTL0[BYPASS] =1 (enable bypass), */ @@ -156,6 +157,7 @@ void init_pll(const struct pll_init_data *data) * only applicable for Kepler */ setbits_le32(KS2_MISC_CTRL, KS2_ARM_PLL_EN); +#endif } else { setbits_le32(keystone_pll_regs[data->pll].reg1, PLLCTL_ENSAT); /* diff --git a/arch/arm/cpu/armv7/keystone/cmd_clock.c b/arch/arm/cpu/armv7/keystone/cmd_clock.c index afd30f3853..d97c95be11 100644 --- a/arch/arm/cpu/armv7/keystone/cmd_clock.c +++ b/arch/arm/cpu/armv7/keystone/cmd_clock.c @@ -14,10 +14,10 @@ #include <asm/arch/psc_defs.h> struct pll_init_data cmd_pll_data = { - .pll = MAIN_PLL, - .pll_m = 16, - .pll_d = 1, - .pll_od = 2, + .pll = MAIN_PLL, + .pll_m = 16, + .pll_d = 1, + .pll_od = 2, }; int do_pll_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) @@ -27,12 +27,19 @@ int do_pll_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) if (strncmp(argv[1], "pa", 2) == 0) cmd_pll_data.pll = PASS_PLL; +#ifndef CONFIG_SOC_K2E else if (strncmp(argv[1], "arm", 3) == 0) cmd_pll_data.pll = TETRIS_PLL; +#endif +#ifdef CONFIG_SOC_K2HK else if (strncmp(argv[1], "ddr3a", 5) == 0) cmd_pll_data.pll = DDR3A_PLL; else if (strncmp(argv[1], "ddr3b", 5) == 0) cmd_pll_data.pll = DDR3B_PLL; +#else + else if (strncmp(argv[1], "ddr3", 4) == 0) + cmd_pll_data.pll = DDR3_PLL; +#endif else goto pll_cmd_usage; @@ -51,11 +58,20 @@ pll_cmd_usage: return cmd_usage(cmdtp); } +#ifdef CONFIG_SOC_K2HK U_BOOT_CMD( pllset, 5, 0, do_pll_cmd, "set pll multiplier and pre divider", "<pa|arm|ddr3a|ddr3b> <mult> <div> <OD>\n" ); +#endif +#ifdef CONFIG_SOC_K2E +U_BOOT_CMD( + pllset, 5, 0, do_pll_cmd, + "set pll multiplier and pre divider", + "<pa|ddr3> <mult> <div> <OD>\n" +); +#endif int do_getclk_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) { @@ -79,7 +95,12 @@ U_BOOT_CMD( getclk, 2, 0, do_getclk_cmd, "get clock rate", "<clk index>\n" - "See the 'enum clk_e' in the k2hk clock.h for clk indexes\n" +#ifdef CONFIG_SOC_K2HK + "See the 'enum clk_e' in the clock-k2hk.h for clk indexes\n" +#endif +#ifdef CONFIG_SOC_K2E + "See the 'enum clk_e' in the clock-k2e.h for clk indexes\n" +#endif ); int do_psc_cmd(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) diff --git a/arch/arm/include/asm/arch-keystone/clock-k2e.h b/arch/arm/include/asm/arch-keystone/clock-k2e.h new file mode 100644 index 0000000000..41478110e5 --- /dev/null +++ b/arch/arm/include/asm/arch-keystone/clock-k2e.h @@ -0,0 +1,68 @@ +/* + * K2E: Clock management APIs + * + * (C) Copyright 2012-2014 + * Texas Instruments Incorporated, <www.ti.com> + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_ARCH_CLOCK_K2E_H +#define __ASM_ARCH_CLOCK_K2E_H + +enum ext_clk_e { + sys_clk, + alt_core_clk, + pa_clk, + ddr3_clk, + mcm_clk, + pcie_clk, + sgmii_clk, + xgmii_clk, + usb_clk, + ext_clk_count /* number of external clocks */ +}; + +extern unsigned int external_clk[ext_clk_count]; + +enum clk_e { + core_pll_clk, + pass_pll_clk, + ddr3_pll_clk, + sys_clk0_clk, + sys_clk0_1_clk, + sys_clk0_2_clk, + sys_clk0_3_clk, + sys_clk0_4_clk, + sys_clk0_6_clk, + sys_clk0_8_clk, + sys_clk0_12_clk, + sys_clk0_24_clk, + sys_clk1_clk, + sys_clk1_3_clk, + sys_clk1_4_clk, + sys_clk1_6_clk, + sys_clk1_12_clk, + sys_clk2_clk, + sys_clk3_clk +}; + +#define KS2_CLK1_6 sys_clk0_6_clk + +/* PLL identifiers */ +enum pll_type_e { + CORE_PLL, + PASS_PLL, + DDR3_PLL, +}; + +#define CORE_PLL_800 {CORE_PLL, 16, 1, 2} +#define CORE_PLL_1000 {CORE_PLL, 20, 1, 2} +#define CORE_PLL_1200 {CORE_PLL, 24, 1, 2} +#define PASS_PLL_1000 {PASS_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 diff --git a/arch/arm/include/asm/arch-keystone/clock.h b/arch/arm/include/asm/arch-keystone/clock.h index c7da3520c4..1513c76b6a 100644 --- a/arch/arm/include/asm/arch-keystone/clock.h +++ b/arch/arm/include/asm/arch-keystone/clock.h @@ -16,6 +16,10 @@ #include <asm/arch/clock-k2hk.h> #endif +#ifdef CONFIG_SOC_K2E +#include <asm/arch/clock-k2e.h> +#endif + #define MAIN_PLL CORE_PLL #include <asm/types.h> |