static int enable_lcd_vdd(void)
{
/* Set 1.20V to power AVDD_DSI_CSI */
/* LD0: 1.20v CNF1: 0x0d */
pmic_write_reg_77620(I2CPWR_BUS, MAX77620_CNFG1_L0_REG, 0xd0, 1);
/* Enable VDD_LCD */
gpio_set(EN_VDD_LCD, 1);
/* wait for 2ms */
mdelay(2);
/* Enable PP1800_LCDIO to panel */
gpio_set(EN_VDD18_LCD, 1);
/* wait for 1ms */
mdelay(1);
/* Set panel EN and RST signals */
gpio_set(LCD_EN, 1); /* enable */
/* wait for min 10ms */
mdelay(10);
gpio_set(LCD_RST_L, 1); /* clear reset */
/* wait for min 3ms */
mdelay(3);
return 0;
}
static void pmic_slam_defaults(unsigned bus)
{
int i;
for (i = 0; i < ARRAY_SIZE(init_list); i++) {
struct max77620_init_reg *reg = &init_list[i];
pmic_write_reg_77620(bus, reg->reg, reg->val, reg->delay);
}
}
void pmic_init(unsigned bus)
{
/* Restore PMIC POR defaults, in case kernel changed 'em */
pmic_slam_defaults(bus);
/* 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);
/* MAX77620: GPIO 0,1,2,5,6,7 = GPIO, 3,4 = alt mode */
pmic_write_reg_77620(bus, MAX77620_AME_GPIO, 0x18, 1);
/* 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);
/*
* MAX77620: Set LDO2 output to 1.8V. LDO2 is used as always-on
* reference for the droop alert circuit. Match this setting with what
* the kernel expects.
*/
pmic_write_reg_77620(bus, MAX77620_CNFG1_L2_REG, 0x14, 1);
/* 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: 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);
/* Required delay of 2msec */
udelay(2000);
printk(BIOS_DEBUG, "PMIC init done\n");
}
