[PATCH v11 1/2] arm64: dts: imx8mm-evkb: add support for i.MX8MM-EVKB

[Johannes Schneider]

Add devicetree for the EVKB, which comes with LPDDR4 and a different
PMIC.

The regulator min/max values are taken from the evk's schematic:
8MMINILPD4-CPU  SPF-31399_C2.pdf

Signed-off-by: Johannes Schneider <johannes.schneider at leica-geosystems.com>
---
 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 arch/arm64/boot/dts/freescale/imx8mm-evkb.dts | 134 ++++++++++++++++++
 2 files changed, 135 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-evkb.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 3ea9edc87909..3bccc4d10928 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -55,6 +55,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mm-data-modul-edm-sbc.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-ddr4-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-emcon-avari.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-evk.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mm-evkb.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-icore-mx8mm-ctouch2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-icore-mx8mm-edimm2.2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mm-kontron-bl.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evkb.dts b/arch/arm64/boot/dts/freescale/imx8mm-evkb.dts
new file mode 100644
index 000000000000..2c3947d68982
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evkb.dts
@@ -0,0 +1,134 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright 2019-2022 NXP
+ */
+
+/dts-v1/;
+
+#include "imx8mm-evk.dtsi"
+
+/ {
+	model = "FSL i.MX8MM EVKB"; // with LPDDR4 and PCA9450 PMIC
+	compatible = "fsl,imx8mm-evkb", "fsl,imx8mm";
+};
+
+&i2c1 {
+	/*
+	 * replace "rohm,bd71847" pmic found on previous evks
+	 * with "nxp,pca9450a"
+	 */
+	/delete-node/ pmic at 4b
+
+	pmic: pmic at 25 {
+		compatible = "nxp,pca9450a";
+		reg = <0x25>;
+		pinctrl-0 = <&pinctrl_pmic>;
+		pinctrl-names = "default";
+		interrupt-parent = <&gpio1>;
+		interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
+
+		regulators {
+			// VDD_SOC_0V8
+			buck1_reg: BUCK1 {
+				regulator-name = "BUCK1";
+				regulator-min-microvolt = <780000>;
+				regulator-max-microvolt = <900000>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-ramp-delay = <1250>;
+			};
+
+			// VDD_ARM_0V9
+			buck2_reg: BUCK2 {
+				regulator-name = "BUCK2";
+				regulator-min-microvolt = <805000>;
+				regulator-max-microvolt = <1050000>;
+				regulator-boot-on;
+				regulator-always-on;
+				regulator-ramp-delay = <1250>;
+				nxp,dvs-standby-voltage = <850000>;
+			};
+
+			// VDD_DRAM&PU_0V9 (BUCK5 in datasheet)
+			buck3_reg: BUCK3 {
+				regulator-name = "BUCK3";
+				regulator-min-microvolt = <805000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// VDD_3V3/NVCC_3V3 (BUCK6 in datasheet)
+			buck4_reg: BUCK4 {
+				regulator-name = "BUCK4";
+				regulator-min-microvolt = <3000000>;
+				regulator-max-microvolt = <3600000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// VDD_1V8/NVCC_1V8 (BUCK7 in datasheet)
+			buck5_reg: BUCK5 {
+				regulator-name = "BUCK5";
+				regulator-min-microvolt = <1650000>;
+				regulator-max-microvolt = <1950000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// NVCC_DRAM_1V1 (BUCK8 in datasheet)
+			buck6_reg: BUCK6 {
+				regulator-name = "BUCK6";
+				regulator-min-microvolt = <1060000>;
+				regulator-max-microvolt = <1140000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// NVCC_SNVS_1V8
+			ldo1_reg: LDO1 {
+				regulator-name = "LDO1";
+				regulator-min-microvolt = <1620000>;
+				regulator-max-microvolt = <19800000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// VDD_SNVS_0V8
+			ldo2_reg: LDO2 {
+				regulator-name = "LDO2";
+				regulator-min-microvolt = <760000>;
+				regulator-max-microvolt = <900000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// VDDA_1V8
+			ldo3_reg: LDO3 {
+				regulator-name = "LDO3";
+				regulator-min-microvolt = <1710000>;
+				regulator-max-microvolt = <1890000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// VDD_PHY_0V9
+			ldo4_reg: LDO4 {
+				regulator-name = "LDO4";
+				regulator-min-microvolt = <855000>;
+				regulator-max-microvolt = <1000000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+
+			// VDD_PHY_1V2 (LDO6 in datasheet)
+			ldo5_reg: LDO5 {
+				regulator-name = "LDO5";
+				regulator-min-microvolt = <1140000>;
+				regulator-max-microvolt = <1260000>;
+				regulator-boot-on;
+				regulator-always-on;
+			};
+		};
+	};
+};
-- 
2.25.1