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@xxxxxxxxxxxxxxxxxxxx>
---
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@4b
+
+ pmic: pmic@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
