diff options
Diffstat (limited to 'arch/arm')
-rw-r--r-- | arch/arm/cpu/armv7/omap-common/clocks-common.c | 58 | ||||
-rw-r--r-- | arch/arm/cpu/armv7/omap5/hw_data.c | 10 | ||||
-rw-r--r-- | arch/arm/include/asm/arch-omap5/clock.h | 30 | ||||
-rw-r--r-- | arch/arm/include/asm/omap_common.h | 11 |
4 files changed, 97 insertions, 12 deletions
diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c index 6c8226d..9c75c13 100644 --- a/arch/arm/cpu/armv7/omap-common/clocks-common.c +++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c @@ -521,6 +521,38 @@ void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic) gpio_direction_output(pmic->gpio, 1); } +static u32 optimize_vcore_voltage(struct volts const *v) +{ + u32 val; + if (!v->value) + return 0; + if (!v->efuse.reg) + return v->value; + + switch (v->efuse.reg_bits) { + case 16: + val = readw(v->efuse.reg); + break; + case 32: + val = readl(v->efuse.reg); + break; + default: + printf("Error: efuse 0x%08x bits=%d unknown\n", + v->efuse.reg, v->efuse.reg_bits); + return v->value; + } + + if (!val) { + printf("Error: efuse 0x%08x bits=%d val=0, using %d\n", + v->efuse.reg, v->efuse.reg_bits, v->value); + return v->value; + } + + debug("%s:efuse 0x%08x bits=%d Vnom=%d, using efuse value %d\n", + __func__, v->efuse.reg, v->efuse.reg_bits, v->value, val); + return val; +} + /* * Setup the voltages for vdd_mpu, vdd_core, and vdd_iva * We set the maximum voltages allowed here because Smart-Reflex is not @@ -529,11 +561,13 @@ void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic) */ void scale_vcores(struct vcores_data const *vcores) { - do_scale_vcore(vcores->core.addr, vcores->core.value, - vcores->core.pmic); + u32 val; + + val = optimize_vcore_voltage(&vcores->core); + do_scale_vcore(vcores->core.addr, val, vcores->core.pmic); - do_scale_vcore(vcores->mpu.addr, vcores->mpu.value, - vcores->mpu.pmic); + val = optimize_vcore_voltage(&vcores->mpu); + do_scale_vcore(vcores->mpu.addr, val, vcores->mpu.pmic); /* Configure MPU ABB LDO after scale */ abb_setup((*ctrl)->control_std_fuse_opp_vdd_mpu_2, @@ -544,17 +578,17 @@ void scale_vcores(struct vcores_data const *vcores) OMAP_ABB_MPU_TXDONE_MASK, OMAP_ABB_FAST_OPP); - do_scale_vcore(vcores->mm.addr, vcores->mm.value, - vcores->mm.pmic); + val = optimize_vcore_voltage(&vcores->mm); + do_scale_vcore(vcores->mm.addr, val, vcores->mm.pmic); - do_scale_vcore(vcores->gpu.addr, vcores->gpu.value, - vcores->gpu.pmic); + val = optimize_vcore_voltage(&vcores->gpu); + do_scale_vcore(vcores->gpu.addr, val, vcores->gpu.pmic); - do_scale_vcore(vcores->eve.addr, vcores->eve.value, - vcores->eve.pmic); + val = optimize_vcore_voltage(&vcores->eve); + do_scale_vcore(vcores->eve.addr, val, vcores->eve.pmic); - do_scale_vcore(vcores->iva.addr, vcores->iva.value, - vcores->iva.pmic); + val = optimize_vcore_voltage(&vcores->iva); + do_scale_vcore(vcores->iva.addr, val, vcores->iva.pmic); if (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3) { /* Configure LDO SRAM "magic" bits */ diff --git a/arch/arm/cpu/armv7/omap5/hw_data.c b/arch/arm/cpu/armv7/omap5/hw_data.c index 90274a0..bddcaed 100644 --- a/arch/arm/cpu/armv7/omap5/hw_data.c +++ b/arch/arm/cpu/armv7/omap5/hw_data.c @@ -338,22 +338,32 @@ struct vcores_data omap5430_volts_es2 = { struct vcores_data dra752_volts = { .mpu.value = VDD_MPU_DRA752, + .mpu.efuse.reg = STD_FUSE_OPP_VMIN_MPU_NOM, + .mpu.efuse.reg_bits = DRA752_EFUSE_REGBITS, .mpu.addr = TPS659038_REG_ADDR_SMPS12_MPU, .mpu.pmic = &tps659038, .eve.value = VDD_EVE_DRA752, + .eve.efuse.reg = STD_FUSE_OPP_VMIN_DSPEVE_NOM, + .eve.efuse.reg_bits = DRA752_EFUSE_REGBITS, .eve.addr = TPS659038_REG_ADDR_SMPS45_EVE, .eve.pmic = &tps659038, .gpu.value = VDD_GPU_DRA752, + .gpu.efuse.reg = STD_FUSE_OPP_VMIN_GPU_NOM, + .gpu.efuse.reg_bits = DRA752_EFUSE_REGBITS, .gpu.addr = TPS659038_REG_ADDR_SMPS6_GPU, .gpu.pmic = &tps659038, .core.value = VDD_CORE_DRA752, + .core.efuse.reg = STD_FUSE_OPP_VMIN_CORE_NOM, + .core.efuse.reg_bits = DRA752_EFUSE_REGBITS, .core.addr = TPS659038_REG_ADDR_SMPS7_CORE, .core.pmic = &tps659038, .iva.value = VDD_IVA_DRA752, + .iva.efuse.reg = STD_FUSE_OPP_VMIN_IVA_NOM, + .iva.efuse.reg_bits = DRA752_EFUSE_REGBITS, .iva.addr = TPS659038_REG_ADDR_SMPS8_IVA, .iva.pmic = &tps659038, }; diff --git a/arch/arm/include/asm/arch-omap5/clock.h b/arch/arm/include/asm/arch-omap5/clock.h index f7ddd5f..6d02835 100644 --- a/arch/arm/include/asm/arch-omap5/clock.h +++ b/arch/arm/include/asm/arch-omap5/clock.h @@ -219,6 +219,36 @@ #define VDD_CORE_DRA752 1030 #define VDD_IVA_DRA752 1060 +/* Efuse register offsets for DRA7xx platform */ +#define DRA752_EFUSE_BASE 0x4A002000 +#define DRA752_EFUSE_REGBITS 16 +/* STD_FUSE_OPP_VMIN_IVA_2 */ +#define STD_FUSE_OPP_VMIN_IVA_NOM (DRA752_EFUSE_BASE + 0x05CC) +/* STD_FUSE_OPP_VMIN_IVA_3 */ +#define STD_FUSE_OPP_VMIN_IVA_OD (DRA752_EFUSE_BASE + 0x05D0) +/* STD_FUSE_OPP_VMIN_IVA_4 */ +#define STD_FUSE_OPP_VMIN_IVA_HIGH (DRA752_EFUSE_BASE + 0x05D4) +/* STD_FUSE_OPP_VMIN_DSPEVE_2 */ +#define STD_FUSE_OPP_VMIN_DSPEVE_NOM (DRA752_EFUSE_BASE + 0x05E0) +/* STD_FUSE_OPP_VMIN_DSPEVE_3 */ +#define STD_FUSE_OPP_VMIN_DSPEVE_OD (DRA752_EFUSE_BASE + 0x05E4) +/* STD_FUSE_OPP_VMIN_DSPEVE_4 */ +#define STD_FUSE_OPP_VMIN_DSPEVE_HIGH (DRA752_EFUSE_BASE + 0x05E8) +/* STD_FUSE_OPP_VMIN_CORE_2 */ +#define STD_FUSE_OPP_VMIN_CORE_NOM (DRA752_EFUSE_BASE + 0x05F4) +/* STD_FUSE_OPP_VMIN_GPU_2 */ +#define STD_FUSE_OPP_VMIN_GPU_NOM (DRA752_EFUSE_BASE + 0x1B08) +/* STD_FUSE_OPP_VMIN_GPU_3 */ +#define STD_FUSE_OPP_VMIN_GPU_OD (DRA752_EFUSE_BASE + 0x1B0C) +/* STD_FUSE_OPP_VMIN_GPU_4 */ +#define STD_FUSE_OPP_VMIN_GPU_HIGH (DRA752_EFUSE_BASE + 0x1B10) +/* STD_FUSE_OPP_VMIN_MPU_2 */ +#define STD_FUSE_OPP_VMIN_MPU_NOM (DRA752_EFUSE_BASE + 0x1B20) +/* STD_FUSE_OPP_VMIN_MPU_3 */ +#define STD_FUSE_OPP_VMIN_MPU_OD (DRA752_EFUSE_BASE + 0x1B24) +/* STD_FUSE_OPP_VMIN_MPU_4 */ +#define STD_FUSE_OPP_VMIN_MPU_HIGH (DRA752_EFUSE_BASE + 0x1B28) + /* Standard offset is 0.5v expressed in uv */ #define PALMAS_SMPS_BASE_VOLT_UV 500000 diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h index 3b8bece..f51fccc 100644 --- a/arch/arm/include/asm/omap_common.h +++ b/arch/arm/include/asm/omap_common.h @@ -506,9 +506,20 @@ struct pmic_data { int (*pmic_write)(u8 sa, u8 reg_addr, u8 reg_data); }; +/** + * struct volts_efuse_data - efuse definition for voltage + * @reg: register address for efuse + * @reg_bits: Number of bits in a register address, mandatory. + */ +struct volts_efuse_data { + u32 reg; + u8 reg_bits; +}; + struct volts { u32 value; u32 addr; + struct volts_efuse_data efuse; struct pmic_data *pmic; }; |