[PATCH v3 2/2] arm64: dts: imx8mp: Add support for DH electronics i.MX8M Plus DHCOM and PDK3

[Marek Vasut <marex@denx.de>]

Add support for DH electronics i.MX8M Plus DHCOM SoM on PDK3 carrier board.
Currently supported are serial console, EQoS and FEC ethernets, eMMC, SD,
SPI NOR, CAN, M.2 E-Key or M.2 M-Key PCIe, USB .

Signed-off-by: Marek Vasut <marex@denx.de>
---
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Frieder Schrempf <frieder.schrempf@kontron.de>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Li Yang <leoyang.li@nxp.com>
Cc: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Cc: Marek Vasut <marex@denx.de>
Cc: Matthias Schiffer <matthias.schiffer@tq-group.com>
Cc: Max Krummenacher <max.krummenacher@toradex.com>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: devicetree@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
---
V2: - Rename clk-xtal25 node name to clock-xtal25
    - Rename i2cmux@ to i2c-mux@
    - Rename clk@6b node to clock@6b
    - Drop so far unused clock-codec
    - Drop status = "okay" from typec@3d and ethernet-phy@7 nodes
V3: - Switch PCIe to fixed-clock source until Si521xx driver lands,
      this is OK since the Si521xx is always on anyway and the I2C
      interface is only used to tune it if necessary, which it is
      not on this board.
---
 arch/arm64/boot/dts/freescale/Makefile        |   1 +
 .../boot/dts/freescale/imx8mp-dhcom-pdk3.dts  | 306 ++++++++++++++++++
 2 files changed, 307 insertions(+)
 create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 836dcc501e6f8..00af4f0ea31e0 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -91,6 +91,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mn-venice-gw7902.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-beacon-kit.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-debix-model-a.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-dhcom-pdk2.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-dhcom-pdk3.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-icore-mx8mp-edimm2.2.dtb
 dtb-$(CONFIG_ARCH_MXC) += imx8mp-msc-sm2s-ep1.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts
new file mode 100644
index 0000000000000..b5e76b992a103
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-dhcom-pdk3.dts
@@ -0,0 +1,306 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2023 Marek Vasut <marex@denx.de>
+ *
+ * DHCOM iMX8MP variant:
+ * DHCM-iMX8ML8-C160-R409-F1638-SPI16-GE-CAN2-SD-RTC-WBTA-ADC-T-RGB-CSI2-HS-I-01D2
+ * DHCOM PCB number: 660-100 or newer
+ * PDK3 PCB number: 669-100 or newer
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/phy/phy-imx8-pcie.h>
+#include "imx8mp-dhcom-som.dtsi"
+
+/ {
+	model = "DH electronics i.MX8M Plus DHCOM Premium Developer Kit (3)";
+	compatible = "dh,imx8mp-dhcom-pdk3", "dh,imx8mp-dhcom-som",
+		     "fsl,imx8mp";
+
+	chosen {
+		stdout-path = &uart1;
+	};
+
+	clk_pcie: clock-pcie {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <100000000>;
+	};
+
+	connector {
+		compatible = "usb-c-connector";
+		label = "USB-C";
+		data-role = "dual";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				usb_c_0_hs_ep: endpoint {
+					remote-endpoint = <&dwc3_0_hs_ep>;
+				};
+			};
+
+			port@1 {
+				reg = <1>;
+
+				usb_c_0_ss_ep: endpoint {
+					remote-endpoint = <&ptn5150_in_ep>;
+				};
+			};
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		button-0 {
+			gpios = <&gpio1 9 GPIO_ACTIVE_LOW>; /* GPIO A */
+			label = "TA1-GPIO-A";
+			linux,code = <KEY_A>;
+			pinctrl-0 = <&pinctrl_dhcom_a>;
+			pinctrl-names = "default";
+			wakeup-source;
+		};
+
+		button-1 {
+			gpios = <&gpio1 8 GPIO_ACTIVE_LOW>; /* GPIO B */
+			label = "TA2-GPIO-B";
+			linux,code = <KEY_B>;
+			pinctrl-0 = <&pinctrl_dhcom_b>;
+			pinctrl-names = "default";
+			wakeup-source;
+		};
+
+		button-2 {
+			gpios = <&gpio5 2 GPIO_ACTIVE_LOW>; /* GPIO C */
+			label = "TA3-GPIO-C";
+			linux,code = <KEY_C>;
+			pinctrl-0 = <&pinctrl_dhcom_c>;
+			pinctrl-names = "default";
+			wakeup-source;
+		};
+
+		button-3 {
+			gpios = <&gpio5 22 GPIO_ACTIVE_LOW>; /* GPIO E */
+			label = "TA4-GPIO-E";
+			linux,code = <KEY_E>;
+			pinctrl-0 = <&pinctrl_dhcom_e>;
+			pinctrl-names = "default";
+			wakeup-source;
+		};
+	};
+
+	led {
+		compatible = "gpio-leds";
+
+		led-0 {
+			color = <LED_COLOR_ID_GREEN>;
+			default-state = "off";
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <0>;
+			gpios = <&gpio4 27 GPIO_ACTIVE_HIGH>; /* GPIO D */
+			pinctrl-0 = <&pinctrl_dhcom_d>;
+			pinctrl-names = "default";
+		};
+
+		led-1 {
+			color = <LED_COLOR_ID_GREEN>;
+			default-state = "off";
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <1>;
+			gpios = <&gpio5 23 GPIO_ACTIVE_HIGH>; /* GPIO F */
+			pinctrl-0 = <&pinctrl_dhcom_f>;
+			pinctrl-names = "default";
+		};
+
+		led-2 {
+			color = <LED_COLOR_ID_GREEN>;
+			default-state = "off";
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <2>;
+			gpios = <&gpio1 0 GPIO_ACTIVE_HIGH>; /* GPIO G */
+			pinctrl-0 = <&pinctrl_dhcom_g>;
+			pinctrl-names = "default";
+		};
+
+		led-3 {
+			color = <LED_COLOR_ID_GREEN>;
+			default-state = "off";
+			function = LED_FUNCTION_INDICATOR;
+			function-enumerator = <3>;
+			gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>; /* GPIO I */
+			pinctrl-0 = <&pinctrl_dhcom_i>;
+			pinctrl-names = "default";
+		};
+	};
+
+	reg_avdd: regulator-avdd {	/* AUDIO_VDD */
+		compatible = "regulator-fixed";
+		regulator-always-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-name = "AUDIO_VDD";
+	};
+};
+
+&i2c5 {
+	i2c-mux@70 {
+		compatible = "nxp,pca9540";
+		reg = <0x70>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		i2cmuxed0: i2c@0 {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <0>;
+
+			typec@3d {
+				compatible = "nxp,ptn5150";
+				reg = <0x3d>;
+				interrupt-parent = <&gpio4>;
+				interrupts = <25 IRQ_TYPE_EDGE_FALLING>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pinctrl_ptn5150>;
+
+				ports {
+					#address-cells = <1>;
+					#size-cells = <0>;
+
+					port@0 {
+						reg = <0>;
+
+						ptn5150_in_ep: endpoint {
+							remote-endpoint = <&usb_c_0_ss_ep>;
+						};
+					};
+
+					port@1 {
+						reg = <1>;
+
+						ptn5150_out_ep: endpoint {
+							remote-endpoint = <&dwc3_0_ss_ep>;
+						};
+					};
+				};
+			};
+
+			power-sensor@40 {
+			    compatible = "ti,ina238";
+			    reg = <0x40>;
+			    shunt-resistor = <20000>;	/* 0.02 R */
+			    ti,shunt-gain = <1>;	/* Drop cca. 40mV */
+			};
+
+			eeprom_board: eeprom@54 {
+				compatible = "atmel,24c04";
+				pagesize = <16>;
+				reg = <0x54>;
+			};
+		};
+
+		i2cmuxed1: i2c@1 {	/* HDMI DDC I2C */
+			#address-cells = <1>;
+			#size-cells = <0>;
+			reg = <1>;
+		};
+	};
+};
+
+&ethphy0g {
+	reg = <7>;
+};
+
+&fec {	/* Second ethernet */
+	pinctrl-0 = <&pinctrl_fec_rgmii>;
+	phy-handle = <&ethphypdk>;
+	phy-mode = "rgmii-id";
+
+	mdio {
+		ethphypdk: ethernet-phy@7 { /* Micrel KSZ9131RNXI */
+			compatible = "ethernet-phy-id0022.1642",
+				     "ethernet-phy-ieee802.3-c22";
+			interrupt-parent = <&gpio4>;
+			interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
+			pinctrl-0 = <&pinctrl_ethphy1>;
+			pinctrl-names = "default";
+			reg = <7>;
+			reset-assert-us = <1000>;
+			/* RESET_N signal rise time ~100ms */
+			reset-deassert-us = <120000>;
+			reset-gpios = <&gpio4 2 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&flexcan1 {
+	status = "okay";
+};
+
+&pcie_phy {
+	clocks = <&clk_pcie>;
+	clock-names = "ref";
+	fsl,refclk-pad-mode = <IMX8_PCIE_REFCLK_PAD_INPUT>;
+	status = "okay";
+};
+
+&pcie {
+	fsl,max-link-speed = <3>;
+	reset-gpio = <&gpio1 6 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
+&usb_dwc3_0 {
+	usb-role-switch;
+
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		dwc3_0_hs_ep: endpoint@0 {
+			reg = <0>;
+			remote-endpoint = <&usb_c_0_hs_ep>;
+		};
+
+		dwc3_0_ss_ep: endpoint@1 {
+			reg = <1>;
+			remote-endpoint = <&ptn5150_out_ep>;
+		};
+	};
+};
+
+&usb3_1 {
+	fsl,disable-port-power-control;
+	fsl,permanently-attached;
+};
+
+&usb_dwc3_1 {
+	/* This port has USB5734 Hub connected to it, PWR/OC pins are unused */
+	/delete-property/ pinctrl-names;
+	/delete-property/ pinctrl-0;
+};
+
+&iomuxc {
+	/*
+	 * GPIO_A,B,C,E are connected to buttons.
+	 * GPIO_D,F,G,I are connected to LEDs.
+	 * GPIO_H is connected to USB Hub RESET_N.
+	 * GPIO_M is connected to CLKOUT2.
+	 */
+	pinctrl-0 = <&pinctrl_hog_base
+		     &pinctrl_dhcom_h &pinctrl_dhcom_j &pinctrl_dhcom_k
+		     &pinctrl_dhcom_l
+		     &pinctrl_dhcom_int>;
+
+	pinctrl_ptn5150: ptn5150grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_TXC__GPIO4_IO25		0x40000000
+		>;
+	};
+};
-- 
2.39.2