commit b4f34ae3f82e98501a7b24890fb8661b0531e310
author Marek Vasut <marex@denx.de> Sun Sep 29 01:52:35 2024 +0200
committer Fabio Estevam <festevam@gmail.com> Fri Oct 04 09:14:29 2024 -0300
tree 0e0b3805f5ba1553933e909fef612d4849e3ff67
parent 67545de3fb874aa8f5a40005009b4dc73ab89959

arm64: dts: imx8mp: Add support for DH electronics i.MX8M Plus DHCOM PicoITX

Add support for DH electronics i.MX8M Plus DHCOM SoM on PicoITX carrier board.
This system is populated with serial console, EQoS ethernet, eMMC, SD, SPI NOR,
LEDs and USB 3.0 host used in USB 2.0 mode on PicoITX.

Matching Linux kernel patch has been posted:
https://lore.kernel.org/imx/20240928234949.357893-2-marex@denx.de/

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Fabio Estevam <festevam@gmail.com>

arch/arm/dts/Makefile

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index d46f0bd..b586e88 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -971,6 +971,7 @@
 	imx8mp-dhcom-pdk2.dtb \
 	imx8mp-dhcom-pdk3.dtb \
 	imx8mp-dhcom-pdk3-overlay-rev100.dtbo \
+	imx8mp-dhcom-picoitx.dtb \
 	imx8mp-icore-mx8mp-edimm2.2.dtb \
 	imx8mp-msc-sm2s.dtb \
 	imx8mq-pico-pi.dtb \

arch/arm/dts/imx8mp-dhcom-picoitx-u-boot.dtsi

diff --git a/arch/arm/dts/imx8mp-dhcom-picoitx-u-boot.dtsi b/arch/arm/dts/imx8mp-dhcom-picoitx-u-boot.dtsi
new file mode 100644
index 0000000..4e95cd0
--- /dev/null
+++ b/arch/arm/dts/imx8mp-dhcom-picoitx-u-boot.dtsi
@@ -0,0 +1,6 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2023-2024 Marek Vasut <marex@denx.de>
+ */
+
+#include "imx8mp-dhcom-u-boot.dtsi"

arch/arm/dts/imx8mp-dhcom-picoitx.dts

diff --git a/arch/arm/dts/imx8mp-dhcom-picoitx.dts b/arch/arm/dts/imx8mp-dhcom-picoitx.dts
new file mode 100644
index 0000000..285aaa5
--- /dev/null
+++ b/arch/arm/dts/imx8mp-dhcom-picoitx.dts
@@ -0,0 +1,152 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (C) 2023-2024 Marek Vasut <marex@denx.de>
+ *
+ * DHCOM iMX8MP variant:
+ * DHCM-iMX8ML8-C160-R204-F1638-SPI16-E-SD-RTC-T-RGB-I-01D2
+ * DHCOM PCB number: 660-200 or newer
+ * PicoITX PCB number: 487-600 or newer
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+#include "imx8mp-dhcom-som.dtsi"
+
+/ {
+	model = "DH electronics i.MX8M Plus DHCOM PicoITX";
+	compatible = "dh,imx8mp-dhcom-picoitx", "dh,imx8mp-dhcom-som",
+		     "fsl,imx8mp";
+
+	chosen {
+		stdout-path = &uart1;
+	};
+
+	led {
+		compatible = "gpio-leds";
+
+		led-0 {
+			color = <LED_COLOR_ID_YELLOW>;
+			default-state = "off";
+			function = LED_FUNCTION_INDICATOR;
+			gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>; /* GPIO I */
+			pinctrl-0 = <&pinctrl_dhcom_i>;
+			pinctrl-names = "default";
+		};
+	};
+};
+
+&eqos {	/* First ethernet */
+	pinctrl-0 = <&pinctrl_eqos_rmii>;
+	phy-handle = <&ethphy0f>;
+	phy-mode = "rmii";
+
+	assigned-clock-parents = <&clk IMX8MP_SYS_PLL1_266M>,
+				 <&clk IMX8MP_SYS_PLL2_100M>,
+				 <&clk IMX8MP_SYS_PLL2_50M>;
+	assigned-clock-rates = <0>, <100000000>, <50000000>;
+};
+
+&ethphy0g {	/* Micrel KSZ9131RNXI */
+	status = "disabled";
+};
+
+&ethphy0f {	/* SMSC LAN8740Ai */
+	status = "okay";
+};
+
+&fec {
+	status = "disabled";
+};
+
+&flexcan1 {
+	status = "okay";
+};
+
+&gpio1 {
+	gpio-line-names =
+		"DHCOM-G", "", "", "",
+		"", "DHCOM-I", "PicoITX-HW0", "PicoITX-HW2",
+		"DHCOM-B", "DHCOM-A", "", "DHCOM-H", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "";
+};
+
+&gpio2 {
+	gpio-line-names =
+		"", "", "", "", "", "", "", "",
+		"", "", "", "PicoITX-HW1", "", "", "", "",
+		"", "", "", "", "DHCOM-INT", "", "", "",
+		"", "", "", "", "", "", "", "";
+};
+
+&gpio4 {
+	gpio-line-names =
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "SOM-HW1", "", "", "", "",
+		"", "", "", "PicoITX-Out2", "", "", "", "";
+};
+
+&gpio5 {
+	gpio-line-names =
+		"", "", "PicoITX-In2", "", "", "", "", "",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "",
+		"", "", "PicoITX-In1", "PicoITX-Out1",
+		"", "", "", "", "", "", "", "";
+};
+
+/* No HS connector on this SoM variant, so no HDMI, PCIe and only USB HS. */
+&pcie_phy {
+	status = "disabled";
+};
+
+&pcie {
+	status = "disabled";
+};
+
+/* No WiFi/BT chipset on this SoM variant. */
+&uart2 {
+	bluetooth {
+		status = "disabled";
+	};
+};
+
+/* USB_OTG port is not routed out on PicoITX. */
+&usb3_0 {
+	status = "disabled";
+};
+
+&usb_dwc3_0 {
+	status = "disabled";
+};
+
+&usb3_1 {
+	fsl,over-current-active-low;
+};
+
+&usb_dwc3_1 {
+	dr_mode = "host";
+	maximum-speed = "high-speed";
+};
+
+/* No WiFi/BT chipset on this SoM variant. */
+&usdhc1 {
+	status = "disabled";
+};
+
+&iomuxc {
+	/*
+	 * The following DHCOM GPIOs are used on this board.
+	 * Therefore, they have been removed from the list below.
+	 * I: yellow led
+	 */
+	pinctrl-0 = <&pinctrl_dhcom_a &pinctrl_dhcom_b &pinctrl_dhcom_c
+		     &pinctrl_dhcom_d &pinctrl_dhcom_e &pinctrl_dhcom_f
+		     &pinctrl_dhcom_g &pinctrl_dhcom_h &pinctrl_dhcom_j
+		     &pinctrl_dhcom_k &pinctrl_dhcom_l &pinctrl_dhcom_m
+		     &pinctrl_dhcom_n &pinctrl_dhcom_o &pinctrl_dhcom_p
+		     &pinctrl_dhcom_q &pinctrl_dhcom_r &pinctrl_dhcom_s
+		     &pinctrl_dhcom_int>;
+};