[PATCH V2 3/4] ARM: dts: imx6ull-dhcom: Add DHCOM based PicoITX board

[Christoph Niedermaier <cniedermaier@dh-electronics.com>]

Add DT for DH PicoITX unit, which is a bare-bones carrier board for
the DHCOM. The board has ethernet port, USB, CAN, LED and a custom
board-to-board expansion connector. For this board a DHCOM i.MX6ULL
SoM configuration without WiFi/BT is used. The interface is used
for the SD card instead. Make this adjustment by using a separate DT
include file.

Signed-off-by: Christoph Niedermaier <cniedermaier@dh-electronics.com>
---
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: kernel@dh-electronics.com
To: linux-arm-kernel@lists.infradead.org
---
V2: - Reorder comments in front of a block
    - Reorder compatible and reg to the beginning of a node
---
 arch/arm/boot/dts/Makefile                         |   1 +
 arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts        | 101 +++++++++++++++++++++
 .../arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi |  97 ++++++++++++++++++++
 3 files changed, 199 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts
 create mode 100644 arch/arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 2cdc53211fc9..ecd8a91a83c1 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -740,6 +740,7 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
 	imx6ull-colibri-wifi-iris.dtb \
 	imx6ull-colibri-wifi-iris-v2.dtb \
 	imx6ull-dhcom-pdk2.dtb \
+	imx6ull-dhcom-picoitx.dtb \
 	imx6ull-jozacp.dtb \
 	imx6ull-kontron-bl.dtb \
 	imx6ull-myir-mys-6ulx-eval.dtb \
diff --git a/arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts b/arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts
new file mode 100644
index 000000000000..132b8b76ec84
--- /dev/null
+++ b/arch/arm/boot/dts/imx6ull-dhcom-picoitx.dts
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2022 DH electronics GmbH
+ *
+ * DHCOM iMX6ULL variant:
+ * DHCM-iMX6ULL-C080-R051-F0409-SPI-E2-CAN2-SD-RTC-ADC-I-01D2
+ * DHCOR PCB number: 578-200 or newer
+ * DHCOM PCB number: 579-200 or newer
+ * PicoITX PCB number: 487-600 or newer
+ */
+/dts-v1/;
+
+#include "imx6ull-dhcom-som.dtsi"
+#include "imx6ull-dhcom-som-cfg-sdcard.dtsi"
+
+/ {
+	model = "DH electronics i.MX6ULL DHCOM on PicoITX";
+	compatible = "dh,imx6ull-dhcom-picoitx", "dh,imx6ull-dhcom-som",
+		     "dh,imx6ull-dhcor-som", "fsl,imx6ull";
+
+	led {
+		compatible = "gpio-leds";
+
+		led-0 {
+			color = <LED_COLOR_ID_YELLOW>;
+			default-state = "off";
+			function = LED_FUNCTION_INDICATOR;
+			gpios = <&gpio4 8 GPIO_ACTIVE_HIGH>; /* GPIO I */
+		};
+	};
+};
+
+&fec1 {
+	phy-handle = <&mdio1_phy0>;
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		mdio1_phy0: ethernet-phy@0 {
+			compatible = "ethernet-phy-id0007.c0f0", /* SMSC LAN8710Ai */
+				     "ethernet-phy-ieee802.3-c22";
+			reg = <0>;
+			clock-names = "rmii-ref";
+			clocks = <&clks IMX6UL_CLK_ENET_REF>;
+			interrupt-parent = <&gpio5>;
+			interrupts = <5 IRQ_TYPE_LEVEL_LOW>;
+			pinctrl-0 = <&pinctrl_fec1_phy &pinctrl_snvs_fec1_phy>;
+			pinctrl-names = "default";
+			reset-assert-us = <500>;
+			reset-deassert-us = <500>;
+			reset-gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
+			smsc,disable-energy-detect; /* Make plugin detection reliable */
+		};
+	};
+};
+
+&fec2 {
+	status = "disabled";
+};
+
+&gpio4 {
+	gpio-line-names =
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "PicoITX-HW2", "PicoITX-HW1", "DHCOM-M",
+		"PicoITX-HW0", "DHCOM-U", "DHCOM-T", "DHCOM-S",
+		"DHCOM-R", "DHCOM-Q", "DHCOM-P", "DHCOM-O",
+		"DHCOM-N", "", "", "";
+};
+
+&gpio5 {
+	gpio-line-names =
+		"DHCOM-A", "DHCOM-B", "PicoITX-In2", "PicoITX-Out2",
+		"PicoITX-In1", "", "", "PicoITX-Out1",
+		"DHCOM-G", "DHCOM-H", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "",
+		"", "", "", "";
+};
+
+&iomuxc {
+	pinctrl_fec1: fec1-grp {
+		fsl,pins = <
+			MX6UL_PAD_GPIO1_IO07__ENET1_MDC		0x1b0b0
+			MX6UL_PAD_GPIO1_IO06__ENET1_MDIO	0x1b0b0
+			MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN	0x1b0b0
+			MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER	0x1b0b0
+			MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00	0x1b0b0
+			MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01	0x1b0b0
+			MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN	0x1b010
+			MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00	0x1b010
+			MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01	0x1b010
+			MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1	0x4001b010
+		>;
+	};
+};
diff --git a/arch/arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi b/arch/arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi
new file mode 100644
index 000000000000..5b095bf072cc
--- /dev/null
+++ b/arch/arm/boot/dts/imx6ull-dhcom-som-cfg-sdcard.dtsi
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
+/*
+ * Copyright (C) 2022 DH electronics GmbH
+ */
+
+/*
+ * Special SoM configuration: SD card
+ *
+ * Enabled:  Micro SD card on module or
+ *           external SD card via DHCOM depends on hardware variant
+ *           GPIO H and GPIO I will be available
+ *           DHCOM UART2 will be available
+ * Disabled: WiFi and BT
+ */
+
+/*
+ * To use usdhc1 as SD card, the WiFi node must be deleted.
+ * BT is also not available, so remove BT from the UART node.
+ */
+/delete-node/ &brcmf;
+/delete-node/ &bluetooth;
+
+/ {
+	aliases {
+		mmc1 = &usdhc1;
+		serial0 = &uart1;
+		serial1 = &uart2;
+		serial2 = &uart3;
+		serial3 = &uart4;
+		serial4 = &uart5;
+		serial5 = &uart6;
+	};
+
+	reg_sd1_vmmc: regulator-sd1-vmmc {
+		compatible = "regulator-fixed";
+		regulator-max-microvolt = <3300000>;
+		regulator-min-microvolt = <3300000>;
+		regulator-name = "VSD_3V3";
+	};
+};
+
+/* Micro SD card on module or external SD card via DHCOM */
+&usdhc1 {
+	/delete-property/ #address-cells;
+	/delete-property/ #size-cells;
+	/delete-property/ keep-power-in-suspend;
+	/delete-property/ mmc-pwrseq;
+	/delete-property/ non-removable;
+	/delete-property/ wakeup-source;
+	cd-gpios = <&gpio1 19 GPIO_ACTIVE_LOW>;
+	no-1-8-v;
+	pinctrl-0 = <&pinctrl_usdhc1>;
+	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
+	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
+	pinctrl-names = "default", "state_100mhz", "state_200mhz";
+	vmmc-supply = <&reg_sd1_vmmc>;
+	status = "okay";
+};
+
+&iomuxc {
+	pinctrl_usdhc1: usdhc1-grp {
+		fsl,pins = <
+			MX6UL_PAD_SD1_CMD__USDHC1_CMD		0x17059
+			MX6UL_PAD_SD1_CLK__USDHC1_CLK		0x10059
+			MX6UL_PAD_SD1_DATA0__USDHC1_DATA0	0x17059
+			MX6UL_PAD_SD1_DATA1__USDHC1_DATA1	0x17059
+			MX6UL_PAD_SD1_DATA2__USDHC1_DATA2	0x17059
+			MX6UL_PAD_SD1_DATA3__USDHC1_DATA3	0x17059
+			MX6UL_PAD_UART1_RTS_B__GPIO1_IO19	0x120b0 /* SD1 CD */
+		>;
+	};
+
+	pinctrl_usdhc1_100mhz: usdhc1-100mhz-grp {
+		fsl,pins = <
+			MX6UL_PAD_SD1_CMD__USDHC1_CMD		0x170b9
+			MX6UL_PAD_SD1_CLK__USDHC1_CLK		0x100b9
+			MX6UL_PAD_SD1_DATA0__USDHC1_DATA0	0x170b9
+			MX6UL_PAD_SD1_DATA1__USDHC1_DATA1	0x170b9
+			MX6UL_PAD_SD1_DATA2__USDHC1_DATA2	0x170b9
+			MX6UL_PAD_SD1_DATA3__USDHC1_DATA3	0x170b9
+			MX6UL_PAD_UART1_RTS_B__GPIO1_IO19	0x120b0 /* SD1 CD */
+
+		>;
+	};
+
+	pinctrl_usdhc1_200mhz: usdhc1-200mhz-grp {
+		fsl,pins = <
+			MX6UL_PAD_SD1_CMD__USDHC1_CMD		0x170f9
+			MX6UL_PAD_SD1_CLK__USDHC1_CLK		0x100f9
+			MX6UL_PAD_SD1_DATA0__USDHC1_DATA0	0x170f9
+			MX6UL_PAD_SD1_DATA1__USDHC1_DATA1	0x170f9
+			MX6UL_PAD_SD1_DATA2__USDHC1_DATA2	0x170f9
+			MX6UL_PAD_SD1_DATA3__USDHC1_DATA3	0x170f9
+			MX6UL_PAD_UART1_RTS_B__GPIO1_IO19	0x120b0 /* SD1 CD */
+		>;
+	};
+};
-- 
2.11.0


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