imx8mm_evk: Switch to new imx8mm evk board

Update PMIC to use PCA9540, the legacy board not supported by NXP

Signed-off-by: Ye Li <ye.li@nxp.com>

4 files changed, 86 insertions, 80 deletions

diff --git a/arch/arm/dts/imx8mm-evk-u-boot.dtsi b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
index e843a5648e..7f48912b49 100644
--- a/arch/arm/dts/imx8mm-evk-u-boot.dtsi
+++ b/arch/arm/dts/imx8mm-evk-u-boot.dtsi
@@ -114,11 +114,11 @@
 	u-boot,dm-spl;
 };
 
-&{/soc@0/bus@30800000/i2c@30a20000/pmic@4b} {
+&{/soc@0/bus@30800000/i2c@30a20000/pca9450@25} {
 	u-boot,dm-spl;
 };
 
-&{/soc@0/bus@30800000/i2c@30a20000/pmic@4b/regulators} {
+&{/soc@0/bus@30800000/i2c@30a20000/pca9450@25/regulators} {
 	u-boot,dm-spl;
 };
 
diff --git a/arch/arm/dts/imx8mm-evk.dtsi b/arch/arm/dts/imx8mm-evk.dtsi
index 6518f088b2..60179e006d 100644
--- a/arch/arm/dts/imx8mm-evk.dtsi
+++ b/arch/arm/dts/imx8mm-evk.dtsi
@@ -126,115 +126,120 @@
 	pinctrl-0 = <&pinctrl_i2c1>;
 	status = "okay";
 
-	pmic@4b {
-		compatible = "rohm,bd71847";
-		reg = <0x4b>;
-		pinctrl-names = "default";
+	pmic: pca9450@25 {
+		reg = <0x25>;
+		compatible = "nxp,pca9450a";
+		/* PMIC PCA9450 PMIC_nINT GPIO1_IO3 */
 		pinctrl-0 = <&pinctrl_pmic>;
-		interrupt-parent = <&gpio1>;
-		interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
-		rohm,reset-snvs-powered;
-
-		#clock-cells = <0>;
-		clocks = <&osc_32k 0>;
-		clock-output-names = "clk-32k-out";
+		gpio_intr = <&gpio1 3 GPIO_ACTIVE_LOW>;
 
 		regulators {
-			buck1_reg: BUCK1 {
-				regulator-name = "buck1";
-				regulator-min-microvolt = <700000>;
-				regulator-max-microvolt = <1300000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pca9450,pmic-buck2-uses-i2c-dvs;
+			/* Run/Standby voltage */
+			pca9450,pmic-buck2-dvs-voltage = <950000>, <850000>;
+
+			buck1_reg: regulator@0 {
+				reg = <0>;
+				regulator-compatible = "buck1";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <2187500>;
 				regulator-boot-on;
 				regulator-always-on;
-				regulator-ramp-delay = <1250>;
+				regulator-ramp-delay = <3125>;
 			};
 
-			buck2_reg: BUCK2 {
-				regulator-name = "buck2";
-				regulator-min-microvolt = <700000>;
-				regulator-max-microvolt = <1300000>;
+			buck2_reg: regulator@1 {
+				reg = <1>;
+				regulator-compatible = "buck2";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <2187500>;
 				regulator-boot-on;
 				regulator-always-on;
-				regulator-ramp-delay = <1250>;
-				rohm,dvs-run-voltage = <1000000>;
-				rohm,dvs-idle-voltage = <900000>;
+				regulator-ramp-delay = <3125>;
 			};
 
-			buck3_reg: BUCK3 {
-				// BUCK5 in datasheet
-				regulator-name = "buck3";
-				regulator-min-microvolt = <700000>;
-				regulator-max-microvolt = <1350000>;
+			buck3_reg: regulator@2 {
+				reg = <2>;
+				regulator-compatible = "buck3";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <2187500>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			buck4_reg: BUCK4 {
-				// BUCK6 in datasheet
-				regulator-name = "buck4";
-				regulator-min-microvolt = <3000000>;
-				regulator-max-microvolt = <3300000>;
+			buck4_reg: regulator@3 {
+				reg = <3>;
+				regulator-compatible = "buck4";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <3400000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			buck5_reg: BUCK5 {
-				// BUCK7 in datasheet
-				regulator-name = "buck5";
-				regulator-min-microvolt = <1605000>;
-				regulator-max-microvolt = <1995000>;
+			buck5_reg: regulator@4 {
+				reg = <4>;
+				regulator-compatible = "buck5";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <3400000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			buck6_reg: BUCK6 {
-				// BUCK8 in datasheet
-				regulator-name = "buck6";
-				regulator-min-microvolt = <800000>;
-				regulator-max-microvolt = <1400000>;
+			buck6_reg: regulator@5 {
+				reg = <5>;
+				regulator-compatible = "buck6";
+				regulator-min-microvolt = <600000>;
+				regulator-max-microvolt = <3400000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo1_reg: LDO1 {
-				regulator-name = "ldo1";
+			ldo1_reg: regulator@6 {
+				reg = <6>;
+				regulator-compatible = "ldo1";
 				regulator-min-microvolt = <1600000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo2_reg: LDO2 {
-				regulator-name = "ldo2";
+			ldo2_reg: regulator@7 {
+				reg = <7>;
+				regulator-compatible = "ldo2";
 				regulator-min-microvolt = <800000>;
-				regulator-max-microvolt = <900000>;
+				regulator-max-microvolt = <1150000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo3_reg: LDO3 {
-				regulator-name = "ldo3";
-				regulator-min-microvolt = <1800000>;
+			ldo3_reg: regulator@8 {
+				reg = <8>;
+				regulator-compatible = "ldo3";
+				regulator-min-microvolt = <800000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo4_reg: LDO4 {
-				regulator-name = "ldo4";
-				regulator-min-microvolt = <900000>;
-				regulator-max-microvolt = <1800000>;
+			ldo4_reg: regulator@9 {
+				reg = <9>;
+				regulator-compatible = "ldo4";
+				regulator-min-microvolt = <800000>;
+				regulator-max-microvolt = <3300000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
-			ldo6_reg: LDO6 {
-				regulator-name = "ldo6";
-				regulator-min-microvolt = <900000>;
-				regulator-max-microvolt = <1800000>;
-				regulator-boot-on;
-				regulator-always-on;
+			ldo5_reg: regulator@10 {
+				reg = <10>;
+				regulator-compatible = "ldo5";
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <3300000>;
 			};
+
 		};
 	};
 };
diff --git a/board/freescale/imx8mm_evk/spl.c b/board/freescale/imx8mm_evk/spl.c
index 64bc60651d..4ef7f6f180 100644
--- a/board/freescale/imx8mm_evk/spl.c
+++ b/board/freescale/imx8mm_evk/spl.c
@@ -26,7 +26,7 @@
 #include <dm/device-internal.h>
 
 #include <power/pmic.h>
-#include <power/bd71837.h>
+#include <power/pca9450.h>
 
 DECLARE_GLOBAL_DATA_PTR;
 
@@ -94,7 +94,7 @@ static int power_init_board(void)
 	struct udevice *dev;
 	int ret;
 
-	ret = pmic_get("pmic@4b", &dev);
+	ret = pmic_get("pca9450@25", &dev);
 	if (ret == -ENODEV) {
 		puts("No pmic\n");
 		return 0;
@@ -102,25 +102,26 @@ static int power_init_board(void)
 	if (ret != 0)
 		return ret;
 
-	/* decrease RESET key long push time from the default 10s to 10ms */
-	pmic_reg_write(dev, BD718XX_PWRONCONFIG1, 0x0);
+	/* BUCKxOUT_DVS0/1 control BUCK123 output */
+	pmic_reg_write(dev, PCA9450_BUCK123_DVS, 0x29);
 
-	/* unlock the PMIC regs */
-	pmic_reg_write(dev, BD718XX_REGLOCK, 0x1);
+	/* Buck 1 DVS control through PMIC_STBY_REQ */
+	pmic_reg_write(dev, PCA9450_BUCK1CTRL, 0x59);
 
-	/* increase VDD_SOC to typical value 0.85v before first DRAM access */
-	pmic_reg_write(dev, BD718XX_BUCK1_VOLT_RUN, 0x0f);
+	/* Set DVS1 to 0.8v for suspend */
+	pmic_reg_write(dev, PCA9450_BUCK1OUT_DVS1, 0x10);
 
-	/* increase VDD_DRAM to 0.975v for 3Ghz DDR */
-	pmic_reg_write(dev, BD718XX_1ST_NODVS_BUCK_VOLT, 0x83);
+	/* increase VDD_DRAM to 0.95v for 3Ghz DDR */
+	pmic_reg_write(dev, PCA9450_BUCK3OUT_DVS0, 0x1C);
 
-#ifndef CONFIG_IMX8M_LPDDR4
-	/* increase NVCC_DRAM_1V2 to 1.2v for DDR4 */
-	pmic_reg_write(dev, BD718XX_4TH_NODVS_BUCK_VOLT, 0x28);
-#endif
+	/* VDD_DRAM needs off in suspend, set B1_ENMODE=10 (ON by PMIC_ON_REQ = H && PMIC_STBY_REQ = L) */
+	pmic_reg_write(dev, PCA9450_BUCK3CTRL, 0x4a);
+
+	/* set VDD_SNVS_0V8 from default 0.85V */
+	pmic_reg_write(dev, PCA9450_LDO2CTRL, 0xC0);
 
-	/* lock the PMIC regs */
-	pmic_reg_write(dev, BD718XX_REGLOCK, 0x11);
+	/* set WDOG_B_CFG to cold reset */
+	pmic_reg_write(dev, PCA9450_RESET_CTRL, 0xA1);
 
 	return 0;
 }
diff --git a/configs/imx8mm_evk_defconfig b/configs/imx8mm_evk_defconfig
index e22b7de56f..ae9e0626dd 100644
--- a/configs/imx8mm_evk_defconfig
+++ b/configs/imx8mm_evk_defconfig
@@ -83,7 +83,7 @@ CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
 CONFIG_PINCTRL_IMX8M=y
 CONFIG_DM_PMIC=y
-CONFIG_SPL_DM_PMIC_BD71837=y
+CONFIG_SPL_DM_PMIC_PCA9450=y
 CONFIG_DM_REGULATOR=y
 CONFIG_DM_REGULATOR_FIXED=y
 CONFIG_DM_REGULATOR_GPIO=y