arm64: dts: imx8mm-evk: Add BD71847 PMIC

The BUCK2 regulator is used for cpufreq voltage control, otherwise
configuration is mostly static.

This uses the newly-implemented rohm,reset-snvs-powered property to
properly handle the SNVS state of imx8mm.

Between BD71837 and BD71847 the BUCK3/4 regulators were removed but
datasheet and board schematics kept the names for BUCK5/6/7/8. The
driver however renumbered 5/6/7/8 to 3/4/5/6. Use the names from DT
bindings and add comments to signal this.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Acked-By: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
index 2d5d894..f8ff0a4 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dts
@@ -39,6 +39,10 @@
        };
 };
 
+&A53_0 {
+       cpu-supply = <&buck2_reg>;
+};
+
 &fec1 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_fec1>;
@@ -95,6 +99,120 @@
        status = "okay";
 };
 
+&i2c1 {
+       clock-frequency = <400000>;
+       pinctrl-names = "default";
+       pinctrl-0 = <&pinctrl_i2c1>;
+       status = "okay";
+
+       pmic@4b {
+               compatible = "rohm,bd71847";
+               reg = <0x4b>;
+               pinctrl-0 = <&pinctrl_pmic>;
+               interrupt-parent = <&gpio1>;
+               interrupts = <3 GPIO_ACTIVE_LOW>;
+               rohm,reset-snvs-powered;
+
+               regulators {
+                       buck1_reg: BUCK1 {
+                               regulator-name = "BUCK1";
+                               regulator-min-microvolt = <700000>;
+                               regulator-max-microvolt = <1300000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                               regulator-ramp-delay = <1250>;
+                       };
+
+                       buck2_reg: BUCK2 {
+                               regulator-name = "BUCK2";
+                               regulator-min-microvolt = <700000>;
+                               regulator-max-microvolt = <1300000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                               regulator-ramp-delay = <1250>;
+                               rohm,dvs-run-voltage = <1000000>;
+                               rohm,dvs-idle-voltage = <900000>;
+                       };
+
+                       buck3_reg: BUCK3 {
+                               // BUCK5 in datasheet
+                               regulator-name = "BUCK3";
+                               regulator-min-microvolt = <700000>;
+                               regulator-max-microvolt = <1350000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                       };
+
+                       buck4_reg: BUCK4 {
+                               // BUCK6 in datasheet
+                               regulator-name = "BUCK4";
+                               regulator-min-microvolt = <3000000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                       };
+
+                       buck5_reg: BUCK5 {
+                               // BUCK7 in datasheet
+                               regulator-name = "BUCK5";
+                               regulator-min-microvolt = <1605000>;
+                               regulator-max-microvolt = <1995000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                       };
+
+                       buck6_reg: BUCK6 {
+                               // BUCK8 in datasheet
+                               regulator-name = "BUCK6";
+                               regulator-min-microvolt = <800000>;
+                               regulator-max-microvolt = <1400000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                       };
+
+                       ldo1_reg: LDO1 {
+                               regulator-name = "LDO1";
+                               regulator-min-microvolt = <3000000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                       };
+
+                       ldo2_reg: LDO2 {
+                               regulator-name = "LDO2";
+                               regulator-min-microvolt = <900000>;
+                               regulator-max-microvolt = <900000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                       };
+
+                       ldo3_reg: LDO3 {
+                               regulator-name = "LDO3";
+                               regulator-min-microvolt = <1800000>;
+                               regulator-max-microvolt = <3300000>;
+                               regulator-boot-on;
+                               regulator-always-on;
+                       };
+
+                       ldo4_reg: LDO4 {
+                               regulator-name = "LDO4";
+                               regulator-min-microvolt = <900000>;
+                               regulator-max-microvolt = <1800000>;
+                               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;
+                       };
+               };
+       };
+};
+
 &iomuxc {
        pinctrl-names = "default";
 
@@ -124,6 +242,19 @@
                >;
        };
 
+       pinctrl_i2c1: i2c1grp {
+               fsl,pins = <
+                       MX8MM_IOMUXC_I2C1_SCL_I2C1_SCL                  0x400001c3
+                       MX8MM_IOMUXC_I2C1_SDA_I2C1_SDA                  0x400001c3
+               >;
+       };
+
+       pinctrl_pmic: pmicirq {
+               fsl,pins = <
+                       MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3               0x41
+               >;
+       };
+
        pinctrl_reg_usdhc2_vmmc: regusdhc2vmmc {
                fsl,pins = <
                        MX8MM_IOMUXC_SD2_RESET_B_GPIO2_IO19     0x41