diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/smaug/pmic.c | 37 | ||||
| -rw-r--r-- | src/mainboard/google/smaug/pmic.h | 3 |
2 files changed, 24 insertions, 16 deletions
diff --git a/src/mainboard/google/smaug/pmic.c b/src/mainboard/google/smaug/pmic.c index 17d65e5ec3..73aa0de83c 100644 --- a/src/mainboard/google/smaug/pmic.c +++ b/src/mainboard/google/smaug/pmic.c @@ -84,29 +84,34 @@ void pmic_init(unsigned bus) /* Restore PMIC POR defaults, in case kernel changed 'em */ pmic_slam_defaults(bus); - /* Setup/Enable GPIO5 - VDD_CPU_REG_EN */ - pmic_write_reg_77620(bus, MAX77620_GPIO5_REG, 0x09, 1); - - /* Setup/Enable GPIO1 - VDD_HDMI_5V0_BST_EN -- ??? */ - pmic_write_reg_77620(bus, MAX77620_GPIO1_REG, 0x09, 1); + /* MAX77620: Set SD0 to 1.0V - VDD_CORE */ + pmic_write_reg_77620(bus, MAX77620_SD0_REG, 0x20, 1); + pmic_write_reg_77620(bus, MAX77620_VDVSSD0_REG, 0x20, 1); - /* GPIO 0,1,5,6,7 = GPIO, 2,3,4 = alt mode */ - pmic_write_reg_77620(bus, MAX77620_AME_GPIO, 0x1c, 1); + /* MAX77620: GPIO 0,1,2,5,6,7 = GPIO, 3,4 = alt mode */ + pmic_write_reg_77620(bus, MAX77620_AME_GPIO, 0x18, 1); - /* Disable SD1 Remote Sense, Set SD1 for LPDDR4 to 1.125v? */ + /* MAX77620: Disable SD1 Remote Sense, Set SD1 for LPDDR4 to 1.125V */ pmic_write_reg_77620(bus, MAX77620_CNFG2SD_REG, 0x04, 1); - pmic_write_reg_77620(bus, MAX77620_SD1_REG, 0x2a, 1); - /* Max77621 VREG for CPU needs to be set to 0.85V as per SysEng */ + /* MAX77621: Set VOUT_REG to 1.0V - CPU VREG */ + pmic_write_reg_77621(bus, MAX77621_VOUT_REG, 0xBF, 1); + + /* MAX77621: Set VOUT_DVC_REG to 1.0V - CPU VREG DVC */ + pmic_write_reg_77621(bus, MAX77621_VOUT_DVC_REG, 0xBF, 1); - /* Max77621 CPU VREG, register 0, 0.85V = 0x27(0.60625 + (39*6.25mV)) */ - pmic_write_reg_77621(bus, MAX77621_VOUT_REG, 0x27, 1); - pmic_write_reg_77621(bus, MAX77621_VOUT_REG, 0xa7, 1); + /* MAX77621: Set CONTROL1 to 0x38 */ + pmic_write_reg_77621(bus, MAX77621_CONTROL1_REG, 0x38, 1); + + /* MAX77621: Set CONTROL2 to 0xD2 */ + pmic_write_reg_77621(bus, MAX77621_CONTROL2_REG, 0xD2, 1); + + /* MAX77620: Setup/Enable GPIO5 - EN_VDD_CPU */ + pmic_write_reg_77620(bus, MAX77620_GPIO5_REG, 0x09, 1); - /* Max77621 CPU VREG DVC, register 1, 0.85V = 0x27 */ - pmic_write_reg_77621(bus, MAX77621_VOUT_DVC_REG, 0x27, 1); - pmic_write_reg_77621(bus, MAX77621_VOUT_DVC_REG, 0xa7, 1); + /* Required delay of 2msec */ + udelay(2000); printk(BIOS_DEBUG, "PMIC init done\n"); } diff --git a/src/mainboard/google/smaug/pmic.h b/src/mainboard/google/smaug/pmic.h index d38b3282b7..4cdae4284b 100644 --- a/src/mainboard/google/smaug/pmic.h +++ b/src/mainboard/google/smaug/pmic.h @@ -25,6 +25,7 @@ #define MAX77620_SD1_REG 0x17 #define MAX77620_SD2_REG 0x18 #define MAX77620_SD3_REG 0x19 +#define MAX77620_VDVSSD0_REG 0x1B #define MAX77620_CNFG2SD_REG 0x22 #define MAX77620_CNFG1_L0_REG 0x23 @@ -71,6 +72,8 @@ #define MAX77621_VOUT_REG 0x00 #define MAX77621_VOUT_DVC_REG 0x01 +#define MAX77621_CONTROL1_REG 0x02 +#define MAX77621_CONTROL2_REG 0x03 void pmic_init(unsigned bus); void pmic_write_reg_77620(unsigned bus, uint8_t reg, uint8_t val, |