OMAP5: palmas: Configure nominal opp vdd values

The nominal opp vdd values as recommended for
ES1.0 silicon is set for mpu, core, mm domains using palmas.

Also used the right sequence to enable the vcores as per
a previous patch from Nishant Menon, which can be dropped now.
	http://lists.denx.de/pipermail/u-boot/2012-March/119151.html

Signed-off-by: R Sricharan <r.sricharan@ti.com>

5 files changed, 52 insertions, 23 deletions

diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c
index e96a430..10d286a 100644
--- a/arch/arm/cpu/armv7/omap-common/clocks-common.c
+++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c
@@ -397,23 +397,16 @@ void do_scale_tps62361(int gpio, u32 reg, u32 volt_mv)
 void do_scale_vcore(u32 vcore_reg, u32 volt_mv)
 {
 	u32 offset_code;
-	u32 step = 12660; /* 12.66 mV represented in uV */
 	u32 offset = volt_mv;
 
 	/* convert to uV for better accuracy in the calculations */
 	offset *= 1000;
 
-	if (omap_revision() == OMAP4430_ES1_0)
-		offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV;
-	else
-		offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV;
-
-	offset_code = (offset + step - 1) / step;
-	/* The code starts at 1 not 0 */
-	offset_code++;
+	offset_code = get_offset_code(offset);
 
 	debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv,
 		offset_code);
+
 	if (omap_vc_bypass_send_value(SMPS_I2C_SLAVE_ADDR,
 				vcore_reg, offset_code))
 		printf("Scaling voltage failed for 0x%x\n", vcore_reg);
diff --git a/arch/arm/cpu/armv7/omap4/clocks.c b/arch/arm/cpu/armv7/omap4/clocks.c
index b6b3f7e..dd694c4 100644
--- a/arch/arm/cpu/armv7/omap4/clocks.c
+++ b/arch/arm/cpu/armv7/omap4/clocks.c
@@ -326,6 +326,21 @@ void scale_vcores(void)
 	}
 }
 
+u32 get_offset_code(u32 offset)
+{
+	u32 offset_code, step = 12660; /* 12.66 mV represented in uV */
+
+	if (omap_revision() == OMAP4430_ES1_0)
+		offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV;
+	else
+		offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV;
+
+	offset_code = (offset + step - 1) / step;
+
+	/* The code starts at 1 not 0 */
+	return ++offset_code;
+}
+
 /*
  * Enable essential clock domains, modules and
  * do some additional special settings needed
diff --git a/arch/arm/cpu/armv7/omap5/clocks.c b/arch/arm/cpu/armv7/omap5/clocks.c
index 722916e..1a59f26 100644
--- a/arch/arm/cpu/armv7/omap5/clocks.c
+++ b/arch/arm/cpu/armv7/omap5/clocks.c
@@ -264,17 +264,31 @@ void scale_vcores(void)
 
 	omap_vc_init(PRM_VC_I2C_CHANNEL_FREQ_KHZ);
 
-	/* Enable 1.22V from TPS for vdd_mpu */
-	volt = 1220;
-	do_scale_tps62361(-1, TPS62361_REG_ADDR_SET1, volt);
+	/* Palmas settings */
+	volt = VDD_CORE;
+	do_scale_vcore(SMPS_REG_ADDR_8_CORE, volt);
 
-	/* VCORE 1 - for vdd_core */
-	volt = 1000;
-	do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
+	volt = VDD_MPU;
+	do_scale_vcore(SMPS_REG_ADDR_12_MPU, volt);
 
-	/* VCORE 2 - for vdd_MM */
-	volt = 1125;
-	do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
+	volt = VDD_MM;
+	do_scale_vcore(SMPS_REG_ADDR_45_IVA, volt);
+
+}
+
+u32 get_offset_code(u32 volt_offset)
+{
+	u32 offset_code, step = 10000; /* 10 mV represented in uV */
+
+	volt_offset -= PALMAS_SMPS_BASE_VOLT_UV;
+
+	offset_code = (volt_offset + step - 1) / step;
+
+	/*
+	 * Offset codes 1-6 all give the base voltage in Palmas
+	 * Offset code 0 switches OFF the SMPS
+	 */
+	return offset_code + 6;
 }
 
 /*
diff --git a/arch/arm/include/asm/arch-omap4/clocks.h b/arch/arm/include/asm/arch-omap4/clocks.h
index 62a339f..617729c 100644
--- a/arch/arm/include/asm/arch-omap4/clocks.h
+++ b/arch/arm/include/asm/arch-omap4/clocks.h
@@ -741,6 +741,7 @@ extern const u32 sys_clk_array[8];
 
 void scale_vcores(void);
 void do_scale_tps62361(int gpio, u32 reg, u32 volt_mv);
+u32 get_offset_code(u32 offset);
 u32 omap_ddr_clk(void);
 void do_scale_vcore(u32 vcore_reg, u32 volt_mv);
 void setup_post_dividers(u32 *const base, const struct dpll_params *params);
diff --git a/arch/arm/include/asm/arch-omap5/clocks.h b/arch/arm/include/asm/arch-omap5/clocks.h
index cf6022d..f32cf3e 100644
--- a/arch/arm/include/asm/arch-omap5/clocks.h
+++ b/arch/arm/include/asm/arch-omap5/clocks.h
@@ -633,12 +633,17 @@ struct omap5_prcm_regs {
 
 /* SMPS */
 #define SMPS_I2C_SLAVE_ADDR	0x12
-#define SMPS_REG_ADDR_VCORE1	0x55
-#define SMPS_REG_ADDR_VCORE2	0x5B
-#define SMPS_REG_ADDR_VCORE3	0x61
+#define SMPS_REG_ADDR_12_MPU	0x23
+#define SMPS_REG_ADDR_45_IVA	0x2B
+#define SMPS_REG_ADDR_8_CORE	0x37
 
-#define PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV		607700
-#define PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV	709000
+/* PALMAS VOLTAGE SETTINGS in mv for OPP_NOMINAL */
+#define VDD_MPU		1000
+#define VDD_MM		1000
+#define VDD_CORE	1040
+
+/* Standard offset is 0.5v expressed in uv */
+#define PALMAS_SMPS_BASE_VOLT_UV 500000
 
 /* TPS */
 #define TPS62361_I2C_SLAVE_ADDR		0x60
@@ -700,6 +705,7 @@ extern const u32 sys_clk_array[8];
 
 void scale_vcores(void);
 void do_scale_tps62361(int gpio, u32 reg, u32 volt_mv);
+u32 get_offset_code(u32 offset);
 u32 omap_ddr_clk(void);
 void do_scale_vcore(u32 vcore_reg, u32 volt_mv);
 void setup_post_dividers(u32 *const base, const struct dpll_params *params);