imx93_evk: spl: update pmic settings
1. Use runtime voltage selection for LD/OD/ND mode.
2. According to latest PE/TE report, the voltages of VDD_SOC for
LD and ND mode need add 50mv margin, so LD voltage is 0.75v->0.8v,
ND voltage is 0.8v->0.85v.
3. Use TOFF_DEB to differentiate new trimmed pmic and old pmic
Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/board/freescale/imx93_evk/spl.c b/board/freescale/imx93_evk/spl.c
index 2ad7489..503286c 100644
--- a/board/freescale/imx93_evk/spl.c
+++ b/board/freescale/imx93_evk/spl.c
@@ -62,6 +62,7 @@
{
struct udevice *dev;
int ret;
+ unsigned int val = 0, buck_val;
ret = pmic_get("pmic@25", &dev);
if (ret == -ENODEV) {
@@ -77,20 +78,41 @@
/* enable DVS control through PMIC_STBY_REQ */
pmic_reg_write(dev, PCA9450_BUCK1CTRL, 0x59);
- if (is_voltage_mode(VOLT_LOW_DRIVE))
- /* 0.75v for Low drive mode
- */
- pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x0c);
- pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, 0x0c);
+ ret = pmic_reg_read(dev, PCA9450_PWR_CTRL);
+ if (ret < 0)
+ return ret;
+
+ val = ret;
+
+ if (is_voltage_mode(VOLT_LOW_DRIVE)) {
+ buck_val = 0x0c; /* 0.8v for Low drive mode */
+ printf("PMIC: Low Drive Voltage Mode\n");
+ } else if (is_voltage_mode(VOLT_NOMINAL_DRIVE)) {
+ buck_val = 0x10; /* 0.85v for Nominal drive mode */
+ printf("PMIC: Nominal Voltage Mode\n");
+ } else {
+ buck_val = 0x14; /* 0.9v for Over drive mode */
+ printf("PMIC: Over Drive Voltage Mode\n");
+ }
+
+ if (val & PCA9450_REG_PWRCTRL_TOFF_DEB) {
+ pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, buck_val);
+ pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, buck_val);
} else {
- /* 0.9v for Over drive mode
- */
- pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, 0x18);
- pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, 0x18);
+ pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS0, buck_val + 0x4);
+ pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, buck_val + 0x4);
}
+ if (IS_ENABLED(CONFIG_IMX93_EVK_LPDDR4X)) {
+ /* Set VDDQ to 1.1V from buck2 */
+ pmic_reg_write(dev, PCA9450_BUCK2OUT_DVS0, 0x28);
+ }
+
/* set standby voltage to 0.65v */
- pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x4);
+ if (val & PCA9450_REG_PWRCTRL_TOFF_DEB)
+ pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x0);
+ else
+ pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x4);
/* I2C_LT_EN*/
pmic_reg_write(dev, 0xa, 0x3);