OMAP4 has three scalable voltage domains vdd_mpu, vdd_iva
and vdd_core. This patch adds the voltage tables and other
configurable voltage processor and voltage controller
settings to control these three scalable domains in OMAP4.
Signed-off-by: Thara Gopinath <thara@xxxxxx>
---
This patch has 9 checkpatch.pl above 80-chars warnings for
the definitions of omap44xx_vdd_mpu_volt_data, omap44xx_vdd_iva_volt_data
and omap44xx_vdd_core_volt_data.
IMHO splitting of the entries in these structures affects
readability and looks very ugly. Hence they are left as is.
arch/arm/mach-omap2/Makefile | 2 +-
arch/arm/mach-omap2/control.h | 12 ++
arch/arm/mach-omap2/voltage.c | 249 +++++++++++++++++++++++++++++
arch/arm/plat-omap/include/plat/voltage.h | 12 ++
4 files changed, 274 insertions(+), 1 deletions(-)
diff --git a/arch/arm/mach-omap2/Makefile b/arch/arm/mach-omap2/Makefile
index 59585d9..d76bedc 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
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 fef6bcc..8ed6d5d 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 1f84939..6e91748 100644
--- a/arch/arm/mach-omap2/voltage.c
+++ b/arch/arm/mach-omap2/voltage.c
@@ -29,6 +29,8 @@
#include <plat/voltage.h>
#include "prm-regbits-34xx.h"
+#include "prm-regbits-44xx.h"
+#include "prm44xx.h"
#include "control.h"
#define VP_IDLE_TIMEOUT 200
@@ -188,6 +190,51 @@ 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.
@@ -232,6 +279,31 @@ 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 */
@@ -807,6 +879,178 @@ static void __init omap3_vdd_data_configure(struct omap_vdd_info *vdd)
vdd->vp_reg.vlimitto_timeout_shift = OMAP3430_TIMEOUT_SHIFT;
}
+/* 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;
+ }
+
+ mod = vdd->vc_reg.prm_mod;
+
+ /* Set up the SMPS_SA(i2c slave address in VC */
+ vc_val = prm_read_mod_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;
+ prm_write_mod_reg(vc_val, mod, vdd->vc_reg.smps_sa_reg);
+
+ /* Setup the VOLRA(pmic reg addr) in VC */
+ vc_val = prm_read_mod_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;
+ prm_write_mod_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);
+ prm_write_mod_reg(vc_val, mod, OMAP4_PRM_VC_CFG_CHANNEL_OFFSET);
+
+ vc_val = (0x60 << OMAP4430_SCLL_SHIFT | 0x26 << OMAP4430_SCLH_SHIFT);
+ prm_write_mod_reg(vc_val, mod, OMAP4_PRM_VC_CFG_I2C_CLK_OFFSET);
+
+ is_initialized = true;
+}
+
+/* Sets up all the VDD related info for OMAP4 */
+static void __init omap4_vdd_data_configure(struct omap_vdd_info *vdd)
+{
+ struct clk *sys_ck;
+ u32 sys_clk_speed, timeout_val, waittime;
+
+ 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;
+ }
+
+ /*
+ * 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;
+ }
+ 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_MOD;
+ vdd->volt_scale = vp_forceupdate_scale_voltage;
+ vdd->vp_enabled = false;
+
+ /* VC parameters */
+ vdd->vc_reg.prm_mod = OMAP4430_PRM_DEVICE_MOD;
+ 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_MOD;
+
+ /* 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;
+}
+
/* Public functions */
/**
* omap_voltage_get_nom_volt() - Gets the current non-auto-compensated voltage
@@ -1233,6 +1477,11 @@ 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 2f4f59a..0ff1233 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
--
1.7.0.4
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