From: Ken Lin ken.lin@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@advantech.com.tw Signed-off-by: Akshay Bhat akshay.bhat@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; }