diff options
Diffstat (limited to 'src/mainboard/google/rush_ryu/pmic.c')
| -rw-r--r-- | src/mainboard/google/rush_ryu/pmic.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/src/mainboard/google/rush_ryu/pmic.c b/src/mainboard/google/rush_ryu/pmic.c index a816e8ac14..00d1ab476f 100644 --- a/src/mainboard/google/rush_ryu/pmic.c +++ b/src/mainboard/google/rush_ryu/pmic.c @@ -27,30 +27,38 @@ #include "pmic.h" #include "reset.h" -/* A44/Ryu has a TI 65913 PMIC on bus 4 (PWR_I2C) */ - -enum { - TI65913_I2C_ADDR = 0x58 -}; +#define PAGE_ADDR(reg) ((reg >> 8) & 0xff) +#define PAGE_OFFSET(reg) (reg & 0xff) struct ti65913_init_reg { - u8 reg; + u16 reg; u8 val; u8 delay; }; static struct ti65913_init_reg init_list[] = { //TODO(twarren@nvidia.com): Add slams back to defaults -// {TI65913_SMPS12_CTRL, 0x01, 0}, // {TI65913_SMPS12_VOLTAGE, 0x38, 0}, +// {TI65913_SMPS12_CTRL, 0x01, 1}, //etc. }; -void pmic_write_reg(unsigned bus, uint8_t reg, uint8_t val, int delay) +int pmic_read_reg(unsigned bus, uint16_t reg, uint8_t *data) { - if (i2c_writeb(bus, TI65913_I2C_ADDR, reg, val)) { - printk(BIOS_ERR, "%s: reg = 0x%02X, value = 0x%02X failed!\n", - __func__, reg, val); + if (i2c_readb(bus, PAGE_ADDR(reg), PAGE_OFFSET(reg), data)) { + printk(BIOS_ERR, "%s: page = 0x%02X, reg = 0x%02X failed!\n", + __func__, PAGE_ADDR(reg), PAGE_OFFSET(reg)); + return -1; + } + return 0; +} + +void pmic_write_reg(unsigned bus, uint16_t reg, uint8_t val, int delay) +{ + if (i2c_writeb(bus, PAGE_ADDR(reg), PAGE_OFFSET(reg), val)) { + printk(BIOS_ERR, "%s: page = 0x%02X, reg = 0x%02X, " + "value = 0x%02X failed!\n", + __func__, PAGE_ADDR(reg), PAGE_OFFSET(reg), val); /* Reset the SoC on any PMIC write error */ cpu_reset(); } else { @@ -71,14 +79,12 @@ static void pmic_slam_defaults(unsigned bus) void pmic_init(unsigned bus) { - /* Don't need to set up VDD_CORE - already done - by EC ?? */ - /* Restore PMIC POR defaults, in case kernel changed 'em */ pmic_slam_defaults(bus); /* A44: Set VDD_CPU to 1.0V. */ - pmic_write_reg(bus, TI65913_SMPS12_CTRL, 0x01, 1); pmic_write_reg(bus, TI65913_SMPS12_VOLTAGE, 0x38, 0); + pmic_write_reg(bus, TI65913_SMPS12_CTRL, 0x01, 1); printk(BIOS_DEBUG, "PMIC init done\n"); } |