[PATCH v2 2/3] ARM: mmp: append mmc 2v8 regulator on dkb board

[Jun Nie]

ARM: mmp: append mmc 2v8 regulator on dkb board

Signed-off-by: Jun Nie <njun at marvell.com>
---
 arch/arm/mach-mmp/include/mach/mfp-pxa910.h |    3 ++
 arch/arm/mach-mmp/ttc_dkb.c                 |   37 +++++++++++++++++++++++++++
 2 files changed, 40 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-mmp/include/mach/mfp-pxa910.h
b/arch/arm/mach-mmp/include/mach/mfp-pxa910.h
index fbd7ee8..d1150ab 100644
--- a/arch/arm/mach-mmp/include/mach/mfp-pxa910.h
+++ b/arch/arm/mach-mmp/include/mach/mfp-pxa910.h
@@ -167,4 +167,7 @@
 #define GPIO119_PWM3_OUT	MFP_CFG(GPIO119, AF2)
 #define GPIO120_PWM4_OUT	MFP_CFG(GPIO120, AF2)

+/* GPIO */
+#define GPIO15_GPIO		MFP_CFG(GPIO15, AF0)
+
 #endif /* __ASM_MACH MFP_PXA910_H */
diff --git a/arch/arm/mach-mmp/ttc_dkb.c b/arch/arm/mach-mmp/ttc_dkb.c
index e411039..473e0bc 100644
--- a/arch/arm/mach-mmp/ttc_dkb.c
+++ b/arch/arm/mach-mmp/ttc_dkb.c
@@ -15,6 +15,8 @@
 #include <linux/mtd/partitions.h>
 #include <linux/mtd/onenand.h>
 #include <linux/interrupt.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/fixed.h>

 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -27,6 +29,8 @@

 #define TTCDKB_NR_IRQS		(IRQ_BOARD_START + 24)

+#define GPIO_SD_2V8_ENABLE		(15)
+
 static unsigned long ttc_dkb_pin_config[] __initdata = {
 	/* UART2 */
 	GPIO47_UART2_RXD,
@@ -55,6 +59,9 @@ static unsigned long ttc_dkb_pin_config[] __initdata = {
 	DF_WEn_DF_WEn,
 	DF_REn_DF_REn,
 	DF_RDY0_DF_RDY0,
+
+	/* 2V8 SD/MMC regulator */
+	GPIO15_GPIO,
 };

 static struct mtd_partition ttc_dkb_onenand_partitions[] = {
@@ -113,6 +120,35 @@ static struct platform_device *ttc_dkb_devices[] = {
 	&ttc_dkb_device_onenand,
 };

+static struct regulator_consumer_supply dkb_mmc_2v8_supplies[] = {
+	REGULATOR_SUPPLY("vmmc", "sdhci-pxa.0"),
+};
+
+static struct regulator_init_data dkb_mmc_2v8_data = {
+	.constraints	= {
+		.valid_ops_mask		= REGULATOR_CHANGE_STATUS,
+	},
+	.num_consumer_supplies	= ARRAY_SIZE(dkb_mmc_2v8_supplies),
+	.consumer_supplies	= dkb_mmc_2v8_supplies,
+};
+
+static struct fixed_voltage_config dkb_mmc_2v8 = {
+	.supply_name		= "vmmc",
+	.microvolts		= 2800000,
+	.gpio			= GPIO_SD_2V8_ENABLE,
+	.enable_high		= 1,
+	.enabled_at_boot	= 0,
+	.init_data		= &dkb_mmc_2v8_data,
+};
+
+static struct platform_device dkb_mmc_2v8_device = {
+	.name		= "reg-fixed-voltage",
+	.id		= 1,
+	.dev = {
+		.platform_data = &dkb_mmc_2v8,
+	},
+};
+
 static void __init ttc_dkb_init(void)
 {
 	mfp_config(ARRAY_AND_SIZE(ttc_dkb_pin_config));
@@ -122,6 +158,7 @@ static void __init ttc_dkb_init(void)

 	/* off-chip devices */
 	platform_add_devices(ARRAY_AND_SIZE(ttc_dkb_devices));
+	platform_device_register(&dkb_mmc_2v8_device);
 }

 MACHINE_START(TTC_DKB, "PXA910-based TTC_DKB Development Platform")
-- 
1.7.0.4
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