@@ -741,6 +741,7 @@ dtb-$(CONFIG_SOC_IMX6UL) += \
imx6ull-colibri-wifi-eval-v3.dtb \
imx6ull-colibri-wifi-iris.dtb \
imx6ull-colibri-wifi-iris-v2.dtb \
+ imx6ull-dhcom-drc02.dtb \
imx6ull-dhcom-pdk2.dtb \
imx6ull-dhcom-picoitx.dtb \
imx6ull-jozacp.dtb \
new file mode 100644
@@ -0,0 +1,99 @@
+// 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
+ * DRC02 PCB number: 568-100 or newer (2nd ethernet by SoM)
+ */
+/dts-v1/;
+
+#include "imx6ull-dhcom-som.dtsi"
+#include "imx6ull-dhcom-som-cfg-sdcard.dtsi"
+
+/ {
+ model = "DH electronics i.MX6ULL DHCOM on DRC02";
+ compatible = "dh,imx6ull-dhcom-drc02", "dh,imx6ull-dhcom-som",
+ "dh,imx6ull-dhcor-som", "fsl,imx6ull";
+};
+
+/*
+ * The signals for CAN2 TX and RX are routed to the DHCOM UART1 RTS/CTS pins.
+ * Therefore the UART RTS/CTS must be output on other DHCOM pins, see uart1
+ * node below.
+ */
+&can2 {
+ status = "okay";
+};
+
+&gpio1 {
+ gpio-line-names =
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "DRC02-In2",
+ "", "", "", "",
+ "", "", "DHCOM-I", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "";
+};
+
+&gpio4 {
+ gpio-line-names =
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "DRC02-HW0", "DRC02-HW1", "DHCOM-M",
+ "DRC02-HW2", "DHCOM-U", "DHCOM-T", "DHCOM-S",
+ "DHCOM-R", "DHCOM-Q", "DHCOM-P", "DHCOM-O",
+ "DHCOM-N", "", "", "";
+ /*
+ * NOTE: On DRC02, the RS485_RX_En is controlled by a separate
+ * GPIO line, however the i.MX6ULL UART driver assumes RX happens
+ * during TX anyway and that it only controls drive enable DE
+ * line. Hence, the RX is always enabled here.
+ */
+ rs485-rx-en-hog {
+ gpio-hog;
+ gpios = <25 0>; /* GPIO Q */
+ line-name = "rs485-rx-en";
+ output-low;
+ };
+};
+
+&gpio5 {
+ gpio-line-names =
+ "DHCOM-A", "DHCOM-B", "DHCOM-C", "DRC02-Out2",
+ "DHCOM-E", "", "", "DRC02-Out1",
+ "DRC02-In1", "DHCOM-H", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "",
+ "", "", "", "";
+};
+
+/* DHCOM I2C2 */
+&i2c1 {
+ eeprom@56 {
+ compatible = "atmel,24c04";
+ reg = <0x56>;
+ pagesize = <16>;
+ };
+};
+
+&uart1 {
+ /delete-property/ uart-has-rtscts;
+ rts-gpios = <&gpio1 18 GPIO_ACTIVE_HIGH>; /* GPIO I */
+ cts-gpios = <&gpio4 19 GPIO_ACTIVE_HIGH>; /* GPIO M */
+};
+
+/* Use UART as RS485 */
+&uart2 {
+ /delete-property/ uart-has-rtscts;
+ linux,rs485-enabled-at-boot-time;
+ rts-gpios = <&gpio4 26 GPIO_ACTIVE_HIGH>; /* GPIO P */
+};
Add DT for DH DRC02 unit, which is a universal controller device. The system has two ethernet ports, two CANs, RS485 and RS232, USB, capacitive buttons and an OLED display. For this board a DHCOM i.MX6ULL SoM configuration without WiFi/BT is used. The interface is used for the SD card instead. 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 V3: - Change 2nd ethernet ports to be provided by the SoM --- arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/imx6ull-dhcom-drc02.dts | 99 +++++++++++++++++++++++++++++++ 2 files changed, 100 insertions(+) create mode 100644 arch/arm/boot/dts/imx6ull-dhcom-drc02.dts