diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-omap2/Makefile | 2 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/control.h | 12 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/voltage.c | 279 | ||||
| -rw-r--r-- | arch/arm/plat-omap/include/plat/voltage.h | 12 |
4 files changed, 304 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile index c6efd25fe03c..4ab82f6f15b1 100644 --- a/arch/arm/mach-omap2/Makefile +++ b/arch/arm/mach-omap2/Makefile @@ -62,7 +62,7 @@ obj-$(CONFIG_ARCH_OMAP2) += pm24xx.o obj-$(CONFIG_ARCH_OMAP2) += sleep24xx.o pm_bus.o voltage.o obj-$(CONFIG_ARCH_OMAP3) += pm34xx.o sleep34xx.o voltage.o \ cpuidle34xx.o pm_bus.o -obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o pm_bus.o +obj-$(CONFIG_ARCH_OMAP4) += pm44xx.o voltage.o pm_bus.o obj-$(CONFIG_PM_DEBUG) += pm-debug.o obj-$(CONFIG_OMAP_SMARTREFLEX) += sr_device.o smartreflex.o obj-$(CONFIG_OMAP_SMARTREFLEX_CLASS3) += smartreflex-class3.o diff --git a/arch/arm/mach-omap2/control.h b/arch/arm/mach-omap2/control.h index b3df5c3300a9..b32cf4e341d4 100644 --- a/arch/arm/mach-omap2/control.h +++ b/arch/arm/mach-omap2/control.h @@ -181,6 +181,18 @@ #define OMAP3630_CONTROL_FUSE_OPP50_VDD2 (OMAP2_CONTROL_GENERAL + 0x0128) #define OMAP3630_CONTROL_FUSE_OPP100_VDD2 (OMAP2_CONTROL_GENERAL + 0x012C) +/* OMAP44xx control efuse offsets */ +#define OMAP44XX_CONTROL_FUSE_IVA_OPP50 0x22C +#define OMAP44XX_CONTROL_FUSE_IVA_OPP100 0x22F +#define OMAP44XX_CONTROL_FUSE_IVA_OPPTURBO 0x232 +#define OMAP44XX_CONTROL_FUSE_IVA_OPPNITRO 0x235 +#define OMAP44XX_CONTROL_FUSE_MPU_OPP50 0x240 +#define OMAP44XX_CONTROL_FUSE_MPU_OPP100 0x243 +#define OMAP44XX_CONTROL_FUSE_MPU_OPPTURBO 0x246 +#define OMAP44XX_CONTROL_FUSE_MPU_OPPNITRO 0x249 +#define OMAP44XX_CONTROL_FUSE_CORE_OPP50 0x254 +#define OMAP44XX_CONTROL_FUSE_CORE_OPP100 0x257 + /* AM35XX only CONTROL_GENERAL register offsets */ #define AM35XX_CONTROL_MSUSPENDMUX_6 (OMAP2_CONTROL_GENERAL + 0x0038) #define AM35XX_CONTROL_DEVCONF2 (OMAP2_CONTROL_GENERAL + 0x0310) diff --git a/arch/arm/mach-omap2/voltage.c b/arch/arm/mach-omap2/voltage.c index b27fa4f241fd..ed6079c94c57 100644 --- a/arch/arm/mach-omap2/voltage.c +++ b/arch/arm/mach-omap2/voltage.c @@ -29,6 +29,10 @@ #include <plat/voltage.h> #include "prm-regbits-34xx.h" +#include "prm-regbits-44xx.h" +#include "prm44xx.h" +#include "prcm44xx.h" +#include "prminst44xx.h" #include "control.h" #define VP_IDLE_TIMEOUT 200 @@ -190,6 +194,51 @@ static struct omap_vdd_info omap3_vdd_info[] = { #define OMAP3_NR_SCALABLE_VDD ARRAY_SIZE(omap3_vdd_info) +/* OMAP4 VDD sturctures */ +static struct omap_vdd_info omap4_vdd_info[] = { + { + .vp_offs = { + .vpconfig = OMAP4_PRM_VP_MPU_CONFIG_OFFSET, + .vstepmin = OMAP4_PRM_VP_MPU_VSTEPMIN_OFFSET, + .vstepmax = OMAP4_PRM_VP_MPU_VSTEPMAX_OFFSET, + .vlimitto = OMAP4_PRM_VP_MPU_VLIMITTO_OFFSET, + .vstatus = OMAP4_PRM_VP_MPU_STATUS_OFFSET, + .voltage = OMAP4_PRM_VP_MPU_VOLTAGE_OFFSET, + }, + .voltdm = { + .name = "mpu", + }, + }, + { + .vp_offs = { + .vpconfig = OMAP4_PRM_VP_IVA_CONFIG_OFFSET, + .vstepmin = OMAP4_PRM_VP_IVA_VSTEPMIN_OFFSET, + .vstepmax = OMAP4_PRM_VP_IVA_VSTEPMAX_OFFSET, + .vlimitto = OMAP4_PRM_VP_IVA_VLIMITTO_OFFSET, + .vstatus = OMAP4_PRM_VP_IVA_STATUS_OFFSET, + .voltage = OMAP4_PRM_VP_IVA_VOLTAGE_OFFSET, + }, + .voltdm = { + .name = "iva", + }, + }, + { + .vp_offs = { + .vpconfig = OMAP4_PRM_VP_CORE_CONFIG_OFFSET, + .vstepmin = OMAP4_PRM_VP_CORE_VSTEPMIN_OFFSET, + .vstepmax = OMAP4_PRM_VP_CORE_VSTEPMAX_OFFSET, + .vlimitto = OMAP4_PRM_VP_CORE_VLIMITTO_OFFSET, + .vstatus = OMAP4_PRM_VP_CORE_STATUS_OFFSET, + .voltage = OMAP4_PRM_VP_CORE_VOLTAGE_OFFSET, + }, + .voltdm = { + .name = "core", + }, + }, +}; + +#define OMAP4_NR_SCALABLE_VDD ARRAY_SIZE(omap4_vdd_info) + /* * Structures containing OMAP3430/OMAP3630 voltage supported and various * voltage dependent data for each VDD. @@ -234,6 +283,31 @@ static struct omap_volt_data omap36xx_vddcore_volt_data[] = { VOLT_DATA_DEFINE(0, 0, 0, 0), }; +/* + * Structures containing OMAP4430 voltage supported and various + * voltage dependent data for each VDD. + */ +static struct omap_volt_data omap44xx_vdd_mpu_volt_data[] = { + VOLT_DATA_DEFINE(OMAP4430_VDD_MPU_OPP50_UV, OMAP44XX_CONTROL_FUSE_MPU_OPP50, 0xf4, 0x0c), + VOLT_DATA_DEFINE(OMAP4430_VDD_MPU_OPP100_UV, OMAP44XX_CONTROL_FUSE_MPU_OPP100, 0xf9, 0x16), + VOLT_DATA_DEFINE(OMAP4430_VDD_MPU_OPPTURBO_UV, OMAP44XX_CONTROL_FUSE_MPU_OPPTURBO, 0xfa, 0x23), + VOLT_DATA_DEFINE(OMAP4430_VDD_MPU_OPPNITRO_UV, OMAP44XX_CONTROL_FUSE_MPU_OPPNITRO, 0xfa, 0x27), + VOLT_DATA_DEFINE(0, 0, 0, 0), +}; + +static struct omap_volt_data omap44xx_vdd_iva_volt_data[] = { + VOLT_DATA_DEFINE(OMAP4430_VDD_IVA_OPP50_UV, OMAP44XX_CONTROL_FUSE_IVA_OPP50, 0xf4, 0x0c), + VOLT_DATA_DEFINE(OMAP4430_VDD_IVA_OPP100_UV, OMAP44XX_CONTROL_FUSE_IVA_OPP100, 0xf9, 0x16), + VOLT_DATA_DEFINE(OMAP4430_VDD_IVA_OPPTURBO_UV, OMAP44XX_CONTROL_FUSE_IVA_OPPTURBO, 0xfa, 0x23), + VOLT_DATA_DEFINE(0, 0, 0, 0), +}; + +static struct omap_volt_data omap44xx_vdd_core_volt_data[] = { + VOLT_DATA_DEFINE(OMAP4430_VDD_CORE_OPP50_UV, OMAP44XX_CONTROL_FUSE_CORE_OPP50, 0xf4, 0x0c), + VOLT_DATA_DEFINE(OMAP4430_VDD_CORE_OPP100_UV, OMAP44XX_CONTROL_FUSE_CORE_OPP100, 0xf9, 0x16), + VOLT_DATA_DEFINE(0, 0, 0, 0), +}; + static struct dentry *voltage_dir; /* Init function pointers */ @@ -250,6 +324,17 @@ static void omap3_voltage_write_reg(u32 val, u16 mod, u8 offset) omap2_prm_write_mod_reg(val, mod, offset); } +static u32 omap4_voltage_read_reg(u16 mod, u8 offset) +{ + return omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION, + mod, offset); +} + +static void omap4_voltage_write_reg(u32 val, u16 mod, u8 offset) +{ + omap4_prminst_write_inst_reg(val, OMAP4430_PRM_PARTITION, mod, offset); +} + /* Voltage debugfs support */ static int vp_volt_debug_get(void *data, u64 *val) { @@ -841,6 +926,195 @@ static int __init omap3_vdd_data_configure(struct omap_vdd_info *vdd) return 0; } +/* OMAP4 specific voltage init functions */ +static void __init omap4_vc_init(struct omap_vdd_info *vdd) +{ + u32 vc_val; + u16 mod; + static bool is_initialized; + + if (!vdd->pmic_info || !vdd->pmic_info->uv_to_vsel) { + pr_err("%s: PMIC info requried to configure vc for" + "vdd_%s not populated.Hence cannot initialize vc\n", + __func__, vdd->voltdm.name); + return; + } + + if (!vdd->read_reg || !vdd->write_reg) { + pr_err("%s: No read/write API for accessing vdd_%s regs\n", + __func__, vdd->voltdm.name); + return; + } + + mod = vdd->vc_reg.prm_mod; + + /* Set up the SMPS_SA(i2c slave address in VC */ + vc_val = vdd->read_reg(mod, vdd->vc_reg.smps_sa_reg); + vc_val &= ~vdd->vc_reg.smps_sa_mask; + vc_val |= vdd->pmic_info->i2c_slave_addr << vdd->vc_reg.smps_sa_shift; + vdd->write_reg(vc_val, mod, vdd->vc_reg.smps_sa_reg); + + /* Setup the VOLRA(pmic reg addr) in VC */ + vc_val = vdd->read_reg(mod, vdd->vc_reg.smps_volra_reg); + vc_val &= ~vdd->vc_reg.smps_volra_mask; + vc_val |= vdd->pmic_info->pmic_reg << vdd->vc_reg.smps_volra_shift; + vdd->write_reg(vc_val, mod, vdd->vc_reg.smps_volra_reg); + + /* TODO: Configure setup times and CMD_VAL values*/ + + if (is_initialized) + return; + + /* Generic VC parameters init */ + vc_val = (OMAP4430_RAV_VDD_MPU_L_MASK | OMAP4430_CMD_VDD_MPU_L_MASK | + OMAP4430_RAV_VDD_IVA_L_MASK | OMAP4430_CMD_VDD_IVA_L_MASK | + OMAP4430_RAV_VDD_CORE_L_MASK | OMAP4430_CMD_VDD_CORE_L_MASK); + vdd->write_reg(vc_val, mod, OMAP4_PRM_VC_CFG_CHANNEL_OFFSET); + + vc_val = (0x60 << OMAP4430_SCLL_SHIFT | 0x26 << OMAP4430_SCLH_SHIFT); + vdd->write_reg(vc_val, mod, OMAP4_PRM_VC_CFG_I2C_CLK_OFFSET); + + is_initialized = true; +} + +/* Sets up all the VDD related info for OMAP4 */ +static int __init omap4_vdd_data_configure(struct omap_vdd_info *vdd) +{ + struct clk *sys_ck; + u32 sys_clk_speed, timeout_val, waittime; + + if (!vdd->pmic_info) { + pr_err("%s: PMIC info requried to configure vdd_%s not" + "populated.Hence cannot initialize vdd_%s\n", + __func__, vdd->voltdm.name, vdd->voltdm.name); + return -EINVAL; + } + + if (!strcmp(vdd->voltdm.name, "mpu")) { + vdd->volt_data = omap44xx_vdd_mpu_volt_data; + vdd->vp_reg.tranxdone_status = + OMAP4430_VP_MPU_TRANXDONE_ST_MASK; + vdd->vc_reg.cmdval_reg = OMAP4_PRM_VC_VAL_CMD_VDD_MPU_L_OFFSET; + vdd->vc_reg.smps_sa_shift = + OMAP4430_SA_VDD_MPU_L_PRM_VC_SMPS_SA_SHIFT; + vdd->vc_reg.smps_sa_mask = + OMAP4430_SA_VDD_MPU_L_PRM_VC_SMPS_SA_MASK; + vdd->vc_reg.smps_volra_shift = OMAP4430_VOLRA_VDD_MPU_L_SHIFT; + vdd->vc_reg.smps_volra_mask = OMAP4430_VOLRA_VDD_MPU_L_MASK; + vdd->vc_reg.voltsetup_reg = + OMAP4_PRM_VOLTSETUP_MPU_RET_SLEEP_OFFSET; + vdd->prm_irqst_reg = OMAP4_PRM_IRQSTATUS_MPU_2_OFFSET; + } else if (!strcmp(vdd->voltdm.name, "core")) { + vdd->volt_data = omap44xx_vdd_core_volt_data; + vdd->vp_reg.tranxdone_status = + OMAP4430_VP_CORE_TRANXDONE_ST_MASK; + vdd->vc_reg.cmdval_reg = + OMAP4_PRM_VC_VAL_CMD_VDD_CORE_L_OFFSET; + vdd->vc_reg.smps_sa_shift = OMAP4430_SA_VDD_CORE_L_0_6_SHIFT; + vdd->vc_reg.smps_sa_mask = OMAP4430_SA_VDD_CORE_L_0_6_MASK; + vdd->vc_reg.smps_volra_shift = OMAP4430_VOLRA_VDD_CORE_L_SHIFT; + vdd->vc_reg.smps_volra_mask = OMAP4430_VOLRA_VDD_CORE_L_MASK; + vdd->vc_reg.voltsetup_reg = + OMAP4_PRM_VOLTSETUP_CORE_RET_SLEEP_OFFSET; + vdd->prm_irqst_reg = OMAP4_PRM_IRQSTATUS_MPU_OFFSET; + } else if (!strcmp(vdd->voltdm.name, "iva")) { + vdd->volt_data = omap44xx_vdd_iva_volt_data; + vdd->vp_reg.tranxdone_status = + OMAP4430_VP_IVA_TRANXDONE_ST_MASK; + vdd->vc_reg.cmdval_reg = OMAP4_PRM_VC_VAL_CMD_VDD_IVA_L_OFFSET; + vdd->vc_reg.smps_sa_shift = + OMAP4430_SA_VDD_IVA_L_PRM_VC_SMPS_SA_SHIFT; + vdd->vc_reg.smps_sa_mask = + OMAP4430_SA_VDD_IVA_L_PRM_VC_SMPS_SA_MASK; + vdd->vc_reg.smps_volra_shift = OMAP4430_VOLRA_VDD_IVA_L_SHIFT; + vdd->vc_reg.smps_volra_mask = OMAP4430_VOLRA_VDD_IVA_L_MASK; + vdd->vc_reg.voltsetup_reg = + OMAP4_PRM_VOLTSETUP_IVA_RET_SLEEP_OFFSET; + vdd->prm_irqst_reg = OMAP4_PRM_IRQSTATUS_MPU_OFFSET; + } else { + pr_warning("%s: vdd_%s does not exisit in OMAP4\n", + __func__, vdd->voltdm.name); + return -EINVAL; + } + + /* + * Sys clk rate is require to calculate vp timeout value and + * smpswaittimemin and smpswaittimemax. + */ + sys_ck = clk_get(NULL, "sys_clkin_ck"); + if (IS_ERR(sys_ck)) { + pr_warning("%s: Could not get the sys clk to calculate" + "various vdd_%s params\n", __func__, vdd->voltdm.name); + return -EINVAL; + } + sys_clk_speed = clk_get_rate(sys_ck); + clk_put(sys_ck); + /* Divide to avoid overflow */ + sys_clk_speed /= 1000; + + /* Generic voltage parameters */ + vdd->curr_volt = 1200000; + vdd->ocp_mod = OMAP4430_PRM_OCP_SOCKET_INST; + vdd->read_reg = omap4_voltage_read_reg; + vdd->write_reg = omap4_voltage_write_reg; + vdd->volt_scale = vp_forceupdate_scale_voltage; + vdd->vp_enabled = false; + + /* VC parameters */ + vdd->vc_reg.prm_mod = OMAP4430_PRM_DEVICE_INST; + vdd->vc_reg.smps_sa_reg = OMAP4_PRM_VC_SMPS_SA_OFFSET; + vdd->vc_reg.smps_volra_reg = OMAP4_PRM_VC_VAL_SMPS_RA_VOL_OFFSET; + vdd->vc_reg.bypass_val_reg = OMAP4_PRM_VC_VAL_BYPASS_OFFSET; + vdd->vc_reg.data_shift = OMAP4430_DATA_SHIFT; + vdd->vc_reg.slaveaddr_shift = OMAP4430_SLAVEADDR_SHIFT; + vdd->vc_reg.regaddr_shift = OMAP4430_REGADDR_SHIFT; + vdd->vc_reg.valid = OMAP4430_VALID_MASK; + vdd->vc_reg.cmd_on_shift = OMAP4430_ON_SHIFT; + vdd->vc_reg.cmd_on_mask = OMAP4430_ON_MASK; + vdd->vc_reg.cmd_onlp_shift = OMAP4430_ONLP_SHIFT; + vdd->vc_reg.cmd_ret_shift = OMAP4430_RET_SHIFT; + vdd->vc_reg.cmd_off_shift = OMAP4430_OFF_SHIFT; + + vdd->vp_reg.prm_mod = OMAP4430_PRM_DEVICE_INST; + + /* VPCONFIG bit fields */ + vdd->vp_reg.vpconfig_erroroffset = (vdd->pmic_info->vp_erroroffset << + OMAP4430_ERROROFFSET_SHIFT); + vdd->vp_reg.vpconfig_errorgain_mask = OMAP4430_ERRORGAIN_MASK; + vdd->vp_reg.vpconfig_errorgain_shift = OMAP4430_ERRORGAIN_SHIFT; + vdd->vp_reg.vpconfig_initvoltage_shift = OMAP4430_INITVOLTAGE_SHIFT; + vdd->vp_reg.vpconfig_initvoltage_mask = OMAP4430_INITVOLTAGE_MASK; + vdd->vp_reg.vpconfig_timeouten = OMAP4430_TIMEOUTEN_MASK; + vdd->vp_reg.vpconfig_initvdd = OMAP4430_INITVDD_MASK; + vdd->vp_reg.vpconfig_forceupdate = OMAP4430_FORCEUPDATE_MASK; + vdd->vp_reg.vpconfig_vpenable = OMAP4430_VPENABLE_MASK; + + /* VSTEPMIN VSTEPMAX bit fields */ + waittime = ((vdd->pmic_info->step_size / vdd->pmic_info->slew_rate) * + sys_clk_speed) / 1000; + vdd->vp_reg.vstepmin_smpswaittimemin = waittime; + vdd->vp_reg.vstepmax_smpswaittimemax = waittime; + vdd->vp_reg.vstepmin_stepmin = vdd->pmic_info->vp_vstepmin; + vdd->vp_reg.vstepmax_stepmax = vdd->pmic_info->vp_vstepmax; + vdd->vp_reg.vstepmin_smpswaittimemin_shift = + OMAP4430_SMPSWAITTIMEMIN_SHIFT; + vdd->vp_reg.vstepmax_smpswaittimemax_shift = + OMAP4430_SMPSWAITTIMEMAX_SHIFT; + vdd->vp_reg.vstepmin_stepmin_shift = OMAP4430_VSTEPMIN_SHIFT; + vdd->vp_reg.vstepmax_stepmax_shift = OMAP4430_VSTEPMAX_SHIFT; + + /* VLIMITTO bit fields */ + timeout_val = (sys_clk_speed * vdd->pmic_info->vp_timeout_us) / 1000; + vdd->vp_reg.vlimitto_timeout = timeout_val; + vdd->vp_reg.vlimitto_vddmin = vdd->pmic_info->vp_vddmin; + vdd->vp_reg.vlimitto_vddmax = vdd->pmic_info->vp_vddmax; + vdd->vp_reg.vlimitto_vddmin_shift = OMAP4430_VDDMIN_SHIFT; + vdd->vp_reg.vlimitto_vddmax_shift = OMAP4430_VDDMAX_SHIFT; + vdd->vp_reg.vlimitto_timeout_shift = OMAP4430_TIMEOUT_SHIFT; + + return 0; +} + /* Public functions */ /** * omap_voltage_get_nom_volt() - Gets the current non-auto-compensated voltage @@ -1283,6 +1557,11 @@ static int __init omap_voltage_early_init(void) nr_scalable_vdd = OMAP3_NR_SCALABLE_VDD; vc_init = omap3_vc_init; vdd_data_configure = omap3_vdd_data_configure; + } else if (cpu_is_omap44xx()) { + vdd_info = omap4_vdd_info; + nr_scalable_vdd = OMAP4_NR_SCALABLE_VDD; + vc_init = omap4_vc_init; + vdd_data_configure = omap4_vdd_data_configure; } else { pr_warning("%s: voltage driver support not added\n", __func__); } diff --git a/arch/arm/plat-omap/include/plat/voltage.h b/arch/arm/plat-omap/include/plat/voltage.h index 2f4f59abd19f..0ff123399f3b 100644 --- a/arch/arm/plat-omap/include/plat/voltage.h +++ b/arch/arm/plat-omap/include/plat/voltage.h @@ -44,6 +44,18 @@ #define OMAP3630_VDD_CORE_OPP50_UV 1000000 #define OMAP3630_VDD_CORE_OPP100_UV 1200000 +#define OMAP4430_VDD_MPU_OPP50_UV 930000 +#define OMAP4430_VDD_MPU_OPP100_UV 1100000 +#define OMAP4430_VDD_MPU_OPPTURBO_UV 1260000 +#define OMAP4430_VDD_MPU_OPPNITRO_UV 1350000 + +#define OMAP4430_VDD_IVA_OPP50_UV 930000 +#define OMAP4430_VDD_IVA_OPP100_UV 1100000 +#define OMAP4430_VDD_IVA_OPPTURBO_UV 1260000 + +#define OMAP4430_VDD_CORE_OPP50_UV 930000 +#define OMAP4430_VDD_CORE_OPP100_UV 1100000 + /** * struct voltagedomain - omap voltage domain global structure. * @name: Name of the voltage domain which can be used as a unique |