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author | Tom Rini <trini@ti.com> | 2013-10-02 11:45:22 -0400 |
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committer | Tom Rini <trini@ti.com> | 2013-10-02 11:45:22 -0400 |
commit | 6297872cd5de4705b6318778261b1f3f64a34c11 (patch) | |
tree | 7159ac1b03daa6906c8609b2515e42214f3bc422 /arch/arm/cpu/armv7/am33xx/sys_info.c | |
parent | 0ae39166b1babbc86da4269458da9bce198bce55 (diff) | |
parent | f04c53762962280365005c9db12ab561a18f2692 (diff) | |
download | u-boot-imx-6297872cd5de4705b6318778261b1f3f64a34c11.zip u-boot-imx-6297872cd5de4705b6318778261b1f3f64a34c11.tar.gz u-boot-imx-6297872cd5de4705b6318778261b1f3f64a34c11.tar.bz2 |
Merge branch 'master' of git://git.denx.de/u-boot-arm
Diffstat (limited to 'arch/arm/cpu/armv7/am33xx/sys_info.c')
-rw-r--r-- | arch/arm/cpu/armv7/am33xx/sys_info.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/am33xx/sys_info.c b/arch/arm/cpu/armv7/am33xx/sys_info.c index 63afaaa..50eb598 100644 --- a/arch/arm/cpu/armv7/am33xx/sys_info.c +++ b/arch/arm/cpu/armv7/am33xx/sys_info.c @@ -17,6 +17,7 @@ #include <asm/arch/sys_proto.h> #include <asm/arch/cpu.h> #include <asm/arch/clock.h> +#include <power/tps65910.h> struct ctrl_stat *cstat = (struct ctrl_stat *)CTRL_BASE; @@ -119,3 +120,59 @@ int print_cpuinfo(void) return 0; } #endif /* CONFIG_DISPLAY_CPUINFO */ + +#ifdef CONFIG_AM33XX +int am335x_get_efuse_mpu_max_freq(struct ctrl_dev *cdev) +{ + int sil_rev; + + sil_rev = readl(&cdev->deviceid) >> 28; + + if (sil_rev == 1) + /* PG 2.0, efuse may not be set. */ + return MPUPLL_M_800; + else if (sil_rev >= 2) { + /* Check what the efuse says our max speed is. */ + int efuse_arm_mpu_max_freq; + efuse_arm_mpu_max_freq = readl(&cdev->efuse_sma); + switch ((efuse_arm_mpu_max_freq & DEVICE_ID_MASK)) { + case AM335X_ZCZ_1000: + return MPUPLL_M_1000; + case AM335X_ZCZ_800: + return MPUPLL_M_800; + case AM335X_ZCZ_720: + return MPUPLL_M_720; + case AM335X_ZCZ_600: + case AM335X_ZCE_600: + return MPUPLL_M_600; + case AM335X_ZCZ_300: + case AM335X_ZCE_300: + return MPUPLL_M_300; + } + } + + /* PG 1.0 or otherwise unknown, use the PG1.0 max */ + return MPUPLL_M_720; +} + +int am335x_get_tps65910_mpu_vdd(int sil_rev, int frequency) +{ + /* For PG2.1 and later, we have one set of values. */ + if (sil_rev >= 2) { + switch (frequency) { + case MPUPLL_M_1000: + return TPS65910_OP_REG_SEL_1_3_2_5; + case MPUPLL_M_800: + return TPS65910_OP_REG_SEL_1_2_6; + case MPUPLL_M_720: + return TPS65910_OP_REG_SEL_1_2_0; + case MPUPLL_M_600: + case MPUPLL_M_300: + return TPS65910_OP_REG_SEL_1_1_3; + } + } + + /* Default to PG1.0/PG2.0 values. */ + return TPS65910_OP_REG_SEL_1_1_3; +} +#endif |