[PATCH V7 6/7] ARM: dts: imx6qdl-dhcom: Add DHCOM based PicoITX board

[Christoph Niedermaier]

Add DT for DH PicoITX unit, which is a bare-bones carrier board for
the DHCOM. The board has ethernet port, USB, CAN, LEDs and a custom
board-to-board expansion connector.

Signed-off-by: Christoph Niedermaier <cniedermaier at dh-electronics.com>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: Fabio Estevam <festevam at denx.de>
Cc: Marek Vasut <marex at denx.de>
Cc: NXP Linux Team <linux-imx at nxp.com>
Cc: kernel at dh-electronics.com
To: linux-arm-kernel at lists.infradead.org
---
V2: - Rebase on Shawn Guos branch for-next
V3: - Replace the property label with the
      properties color and function
V4: - No changes
V5: - Include dt-bindings/leds/common.h file to carrier board file
V6: - Rebase on 5.14-rc1
V7: - Rebase on Shawn Guos branch for-next
---
 arch/arm/boot/dts/Makefile                   |  1 +
 arch/arm/boot/dts/imx6dl-dhcom-picoitx.dts   | 20 ++++++++
 arch/arm/boot/dts/imx6qdl-dhcom-picoitx.dtsi | 69 ++++++++++++++++++++++++++++
 3 files changed, 90 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx6dl-dhcom-picoitx.dts
 create mode 100644 arch/arm/boot/dts/imx6qdl-dhcom-picoitx.dtsi

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 828fefc9c436..199bc106627c 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -429,6 +429,7 @@ dtb-$(CONFIG_SOC_IMX6Q) += \
 	imx6dl-cubox-i-emmc-som-v15.dtb \
 	imx6dl-cubox-i-som-v15.dtb \
 	imx6dl-dfi-fs700-m60.dtb \
+	imx6dl-dhcom-picoitx.dtb \
 	imx6dl-eckelmann-ci4x10.dtb \
 	imx6dl-emcon-avari.dtb \
 	imx6dl-gw51xx.dtb \
diff --git a/arch/arm/boot/dts/imx6dl-dhcom-picoitx.dts b/arch/arm/boot/dts/imx6dl-dhcom-picoitx.dts
new file mode 100644
index 000000000000..038bb0025556
--- /dev/null
+++ b/arch/arm/boot/dts/imx6dl-dhcom-picoitx.dts
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 DH electronics GmbH
+ *
+ * DHCOM iMX6 variant:
+ * DHCM-iMX6DL-C0800-R102-F0819-E-SD-RTC-T-HS-I-01D2
+ * DHCOM PCB number: 493-300 or newer
+ * PicoITX PCB number: 487-600 or newer
+ */
+/dts-v1/;
+
+#include "imx6dl.dtsi"
+#include "imx6qdl-dhcom-som.dtsi"
+#include "imx6qdl-dhcom-picoitx.dtsi"
+
+/ {
+	model = "DH electronics i.MX6DL DHCOM on PicoITX";
+	compatible = "dh,imx6dl-dhcom-picoitx", "dh,imx6dl-dhcom-som",
+		     "fsl,imx6dl";
+};
diff --git a/arch/arm/boot/dts/imx6qdl-dhcom-picoitx.dtsi b/arch/arm/boot/dts/imx6qdl-dhcom-picoitx.dtsi
new file mode 100644
index 000000000000..4cd4cb9543c8
--- /dev/null
+++ b/arch/arm/boot/dts/imx6qdl-dhcom-picoitx.dtsi
@@ -0,0 +1,69 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 DH electronics GmbH
+ */
+
+#include <dt-bindings/leds/common.h>
+
+/ {
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	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 */
+			pinctrl-0 = <&pinctrl_dhcom_i>;
+			pinctrl-names = "default";
+		};
+	};
+};
+
+&gpio1 {
+	gpio-line-names =
+		"", "", "DHCOM-A", "", "DHCOM-B", "PicoITX-In2", "", "",
+		"", "", "", "", "", "", "", "",
+		"DHCOM-R", "DHCOM-S", "DHCOM-Q", "DHCOM-T", "DHCOM-U", "", "", "",
+		"", "", "", "", "", "", "", "";
+};
+
+&gpio4 {
+	gpio-line-names =
+		"", "", "", "", "", "PicoITX-In1", "DHCOM-INT", "DHCOM-H",
+		"DHCOM-I", "PicoITX-HW2", "", "", "", "", "", "",
+		"", "", "", "", "PicoITX-Out1", "", "", "",
+		"", "", "", "", "", "", "", "";
+};
+
+&gpio6 {
+	gpio-line-names =
+		"", "", "", "PicoITX-Out2", "", "", "SOM-HW1", "",
+		"", "", "", "", "", "", "PicoITX-HW0", "PicoITX-HW1",
+		"", "", "", "", "", "", "", "",
+		"", "", "", "", "", "", "", "";
+};
+
+&iomuxc {
+	pinctrl-0 = <
+			/*
+			 * The following DHCOM GPIOs are used on this board.
+			 * Therefore, they have been removed from the list below.
+			 * I: yellow led
+			 */
+			&pinctrl_hog_base
+			&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_t &pinctrl_dhcom_u
+			&pinctrl_dhcom_v &pinctrl_dhcom_w &pinctrl_dhcom_int
+		>;
+	pinctrl-names = "default";
+};
-- 
2.11.0