[U-Boot] [PATCH] board: ge: bx50v3: add the PMIC configuration support

[Akshay Bhat]

From: Ken Lin <ken.lin at advantech.com.tw>

Change the PMIC bulk configuration from auto mode to sync mode to avoid
voltage dropout issue seen in auto mode.

Signed-off-by: Ken Lin <ken.lin at advantech.com.tw>
Signed-off-by: Akshay Bhat <akshay.bhat at timesys.com>
---
 board/ge/bx50v3/bx50v3.c | 54 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 54 insertions(+)

diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c
index 7e62aef..2fc1144 100644
--- a/board/ge/bx50v3/bx50v3.c
+++ b/board/ge/bx50v3/bx50v3.c
@@ -596,6 +596,57 @@ static const struct boot_mode board_boot_modes[] = {
 };
 #endif
 
+void pmic_init(void)
+{
+#define I2C_PMIC                0x2
+#define DA9063_I2C_ADDR         0x58
+#define DA9063_REG_BCORE2_CFG   0x9D
+#define DA9063_REG_BCORE1_CFG   0x9E
+#define DA9063_REG_BPRO_CFG     0x9F
+#define DA9063_REG_BIO_CFG      0xA0
+#define DA9063_REG_BMEM_CFG     0xA1
+#define DA9063_REG_BPERI_CFG    0xA2
+#define DA9063_BUCK_MODE_MASK   0xC0
+#define DA9063_BUCK_MODE_MANUAL 0x00
+#define DA9063_BUCK_MODE_SLEEP  0x40
+#define DA9063_BUCK_MODE_SYNC   0x80
+#define DA9063_BUCK_MODE_AUTO   0xC0
+
+	uchar val;
+
+	i2c_set_bus_num(I2C_PMIC);
+
+	i2c_read(DA9063_I2C_ADDR, DA9063_REG_BCORE2_CFG, 1, &val, 1);
+	val &= ~DA9063_BUCK_MODE_MASK;
+	val |= DA9063_BUCK_MODE_SYNC;
+	i2c_write(DA9063_I2C_ADDR, DA9063_REG_BCORE2_CFG, 1, &val, 1);
+
+	i2c_read(DA9063_I2C_ADDR, DA9063_REG_BCORE1_CFG, 1, &val, 1);
+	val &= ~DA9063_BUCK_MODE_MASK;
+	val |= DA9063_BUCK_MODE_SYNC;
+	i2c_write(DA9063_I2C_ADDR, DA9063_REG_BCORE1_CFG, 1, &val, 1);
+
+	i2c_read(DA9063_I2C_ADDR, DA9063_REG_BPRO_CFG, 1, &val, 1);
+	val &= ~DA9063_BUCK_MODE_MASK;
+	val |= DA9063_BUCK_MODE_SYNC;
+	i2c_write(DA9063_I2C_ADDR, DA9063_REG_BPRO_CFG, 1, &val, 1);
+
+	i2c_read(DA9063_I2C_ADDR, DA9063_REG_BIO_CFG, 1, &val, 1);
+	val &= ~DA9063_BUCK_MODE_MASK;
+	val |= DA9063_BUCK_MODE_SYNC;
+	i2c_write(DA9063_I2C_ADDR, DA9063_REG_BIO_CFG, 1, &val, 1);
+
+	i2c_read(DA9063_I2C_ADDR, DA9063_REG_BMEM_CFG, 1, &val, 1);
+	val &= ~DA9063_BUCK_MODE_MASK;
+	val |= DA9063_BUCK_MODE_SYNC;
+	i2c_write(DA9063_I2C_ADDR, DA9063_REG_BMEM_CFG, 1, &val, 1);
+
+	i2c_read(DA9063_I2C_ADDR, DA9063_REG_BPERI_CFG, 1, &val, 1);
+	val &= ~DA9063_BUCK_MODE_MASK;
+	val |= DA9063_BUCK_MODE_SYNC;
+	i2c_write(DA9063_I2C_ADDR, DA9063_REG_BPERI_CFG, 1, &val, 1);
+}
+
 int board_late_init(void)
 {
 #ifdef CONFIG_CMD_BMODE
@@ -619,6 +670,9 @@ int board_late_init(void)
 	pwm_enable(0);
 #endif
 
+	/* board specific pmic init */
+	pmic_init();
+
 	return 0;
 }
 
-- 
1.9.1