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>

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/clock.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)
@@ -543,6 +547,15 @@ 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);
@@ -732,3 +745,13 @@ 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;
+	}
+}

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;
 

arch/arm/include/asm/arch-omap4/sys_proto.h

@@ -58,6 +58,7 @@ void save_omap_boot_params(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);

arch/arm/include/asm/arch-omap5/clock.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

arch/arm/include/asm/arch-omap5/sys_proto.h

@@ -62,6 +62,7 @@ void save_omap_boot_params(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);

arch/arm/include/asm/omap_common.h

@@ -516,6 +516,9 @@ 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;