ARM: dts: imx6qdl-dhcom: Add DHCOM based PicoITX board

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@dh-electronics.com>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: NXP Linux Team <linux-imx@nxp.com>
Cc: kernel@dh-electronics.com
To: linux-arm-kernel@lists.infradead.org
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 828fefc..199bc10 100644 (file)
--- 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 (file)
index 0000000..038bb00
--- /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 (file)
index 0000000..4cd4cb9
--- /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";
+};