ARM: DRA7xx: power Add support for tps659038 PMIC

TPS659038 is the power IC used in DRA7XX boards.
Adding support for this and also adding pmic data
for DRA7XX boards.

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

6 files changed, 80 insertions, 1 deletions

diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index 0daf98cad9..c51c3590c2 100644
--- a/arch/arm/cpu/armv7/omap-common/clocks-common.c
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -30,6 +30,7 @@
  * MA 02111-1307 USA
  */
 #include <common.h>
+#include <i2c.h>
 #include <asm/omap_common.h>
 #include <asm/gpio.h>
 #include <asm/arch/clocks.h>
@@ -487,6 +488,9 @@ void do_scale_vcore(u32 vcore_reg, u32 volt_mv, struct pmic_data *pmic)
         u32 offset = volt_mv;
         int ret = 0;
 
+        if (!volt_mv)
+                return;
+
         pmic->pmic_bus_init();
         /* See if we can first get the GPIO if needed */
         if (pmic->gpio_en)
@@ -534,6 +538,15 @@ void scale_vcores(struct vcores_data const *vcores)
         do_scale_vcore(vcores->mm.addr, vcores->mm.value,
                                           vcores->mm.pmic);
 
+        do_scale_vcore(vcores->gpu.addr, vcores->gpu.value,
+                       vcores->gpu.pmic);
+
+        do_scale_vcore(vcores->eve.addr, vcores->eve.value,
+                       vcores->eve.pmic);
+
+        do_scale_vcore(vcores->iva.addr, vcores->iva.value,
+                       vcores->iva.pmic);
+
          if (emif_sdram_type() == EMIF_SDRAM_TYPE_DDR3) {
                 /* Configure LDO SRAM "magic" bits */
                 writel(2, (*prcm)->prm_sldo_core_setup);
@@ -723,3 +736,13 @@ void prcm_init(void)
         if (OMAP_INIT_CONTEXT_SPL != omap_hw_init_context())
                 enable_basic_uboot_clocks();
 }
+
+void gpi2c_init(void)
+{
+        static int gpi2c = 1;
+
+        if (gpi2c) {
+                i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+                gpi2c = 0;
+        }
+}
diff --git a/arch/arm/cpu/armv7/omap5/hw_data.c b/arch/arm/cpu/armv7/omap5/hw_data.c
index 74e473d83a..e9d34c13b1 100644
--- a/arch/arm/cpu/armv7/omap5/hw_data.c
+++ b/arch/arm/cpu/armv7/omap5/hw_data.c
@@ -26,6 +26,7 @@
  * MA 02111-1307 USA
  */
 #include <common.h>
+#include <palmas.h>
 #include <asm/arch/omap.h>
 #include <asm/arch/sys_proto.h>
 #include <asm/omap_common.h>
@@ -294,6 +295,19 @@ struct pmic_data palmas = {
         .pmic_write     = omap_vc_bypass_send_value,
 };
 
+struct pmic_data tps659038 = {
+        .base_offset = PALMAS_SMPS_BASE_VOLT_UV,
+        .step = 10000, /* 10 mV represented in uV */
+        /*
+         * Offset codes 1-6 all give the base voltage in Palmas
+         * Offset code 0 switches OFF the SMPS
+         */
+        .start_code = 6,
+        .i2c_slave_addr = TPS659038_I2C_SLAVE_ADDR,
+        .pmic_bus_init  = gpi2c_init,
+        .pmic_write     = palmas_i2c_write_u8,
+};
+
 struct vcores_data omap5430_volts = {
         .mpu.value = VDD_MPU,
         .mpu.addr = SMPS_REG_ADDR_12_MPU,
@@ -322,6 +336,28 @@ struct vcores_data omap5430_volts_es2 = {
         .mm.pmic = &palmas,
 };
 
+struct vcores_data dra752_volts = {
+        .mpu.value      = VDD_MPU_DRA752,
+        .mpu.addr       = TPS659038_REG_ADDR_SMPS12_MPU,
+        .mpu.pmic       = &tps659038,
+
+        .eve.value      = VDD_EVE_DRA752,
+        .eve.addr       = TPS659038_REG_ADDR_SMPS45_EVE,
+        .eve.pmic       = &tps659038,
+
+        .gpu.value      = VDD_GPU_DRA752,
+        .gpu.addr       = TPS659038_REG_ADDR_SMPS6_GPU,
+        .gpu.pmic       = &tps659038,
+
+        .core.value     = VDD_CORE_DRA752,
+        .core.addr      = TPS659038_REG_ADDR_SMPS7_CORE,
+        .core.pmic      = &tps659038,
+
+        .iva.value      = VDD_IVA_DRA752,
+        .iva.addr       = TPS659038_REG_ADDR_SMPS8_IVA,
+        .iva.pmic       = &tps659038,
+};
+
 /*
  * Enable essential clock domains, modules and
  * do some additional special settings needed
@@ -562,7 +598,7 @@ void hw_data_init(void)
         case DRA752_ES1_0:
         *prcm = &dra7xx_prcm;
         *dplls_data = &dra7xx_dplls;
-        *omap_vcores = &omap5430_volts_es2;
+        *omap_vcores = &dra752_volts;
         *ctrl = &dra7xx_ctrl;
         break;
 
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index 37d6c69352..438cb96a96 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -57,6 +57,7 @@ u32 cortex_rev(void);
 void init_omap_revision(void);
 void do_io_settings(void);
 void sri2c_init(void);
+void gpi2c_init(void);
 int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
 u32 warm_reset(void);
 void force_emif_self_refresh(void);
diff --git a/arch/arm/include/asm/arch-omap5/clocks.h b/arch/arm/include/asm/arch-omap5/clocks.h
index ca75f6333f..b43737ed42 100644
--- a/arch/arm/include/asm/arch-omap5/clocks.h
+++ b/arch/arm/include/asm/arch-omap5/clocks.h
@@ -212,9 +212,24 @@
 #define VDD_MPU_ES2_LOW 880
 #define VDD_MM_ES2_LOW 880
 
+/* TPS659038 Voltage settings in mv for OPP_NOMINAL */
+#define VDD_MPU_DRA752          1090
+#define VDD_EVE_DRA752          1060
+#define VDD_GPU_DRA752          1060
+#define VDD_CORE_DRA752         1030
+#define VDD_IVA_DRA752          1060
+
 /* Standard offset is 0.5v expressed in uv */
 #define PALMAS_SMPS_BASE_VOLT_UV 500000
 
+/* TPS659038 */
+#define TPS659038_I2C_SLAVE_ADDR                0x58
+#define TPS659038_REG_ADDR_SMPS12_MPU           0x23
+#define TPS659038_REG_ADDR_SMPS45_EVE           0x2B
+#define TPS659038_REG_ADDR_SMPS6_GPU            0x2F
+#define TPS659038_REG_ADDR_SMPS7_CORE           0x33
+#define TPS659038_REG_ADDR_SMPS8_IVA            0x37
+
 /* TPS */
 #define TPS62361_I2C_SLAVE_ADDR         0x60
 #define TPS62361_REG_ADDR_SET0          0x0
diff --git a/arch/arm/include/asm/arch-omap5/sys_proto.h b/arch/arm/include/asm/arch-omap5/sys_proto.h
index 32ced5fbde..36cfc6f74e 100644
--- a/arch/arm/include/asm/arch-omap5/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap5/sys_proto.h
@@ -61,6 +61,7 @@ u32 cortex_rev(void);
 void init_omap_revision(void);
 void do_io_settings(void);
 void sri2c_init(void);
+void gpi2c_init(void);
 int omap_vc_bypass_send_value(u8 sa, u8 reg_addr, u8 reg_data);
 u32 warm_reset(void);
 void force_emif_self_refresh(void);
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 3f1d31dbd9..6b28f2e3f7 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -510,6 +510,9 @@ struct vcores_data {
         struct volts mpu;
         struct volts core;
         struct volts mm;
+        struct volts gpu;
+        struct volts eve;
+        struct volts iva;
 };
 
 extern struct prcm_regs const **prcm;