Subject: [PATCH v2] ARM: dts: imx7d: sbc-iot-imx7: add basic board support

From: André Draszik <[email-masked]>
Date: Mon, 26 Aug 2019 21:51:56 +0100

This is a forward-port of Compulab's downstream commit
against linux 4.9.11.

Original commit message:
    The SB-IOT-iMX7 base board together with CL-SOM-iMX7
    SoM forms SBC-IOT-iMX7 single board computer.
    SBC-IOT-iMX7 is a single board computer optimized for
    industrial control and monitoring, extensive wireless
    and wired connectivity, ideal solution for
    cost-sensitive systems. It is based on the Freescale
    i.MX7 system-on-chip. SBC-IOT-iMX7 is implemented with
    the CL-SOM-iMX7 System-on-Module providing most of the
    functions,and SB-IOT-iMX7 carrier board providing
    additional peripheral functions and connectors.

    https://www.compulab.com/products/computer-on-modules/cl-som-imx7-freescale-i-mx-7-system-on-module/
    https://www.compulab.com/products/sbcs/sbc-iot-imx7-nxp-i-mx-7-internet-of-things-single-board-computer/

This commit adds basic board support, including:
* SD-card (note that write-protect is not connected
  on this carrier board)
* SPI (available on expansion header)
* i2c3 & i2c4 (including bus recovery information)
* additional UARTs
* all USB ports

Compared to the downtream commit, this commit doesn't
add / enable the PCIe and LCD interface, as PCIe
support needs an additional patch to the PCI controller
first, and I can't test the LCD.

Signed-off-by: André Draszik <[email-masked]>
Cc: Ilya Ledvich <[email-masked]>
Cc: Igor Grinberg <[email-masked]>
Cc: Rob Herring <[email-masked]>
Cc: Mark Rutland <[email-masked]>
Cc: Shawn Guo <[email-masked]>
Cc: Sascha Hauer <[email-masked]>
Cc: Pengutronix Kernel Team <[email-masked]>
Cc: Fabio Estevam <[email-masked]>
Cc: NXP Linux Team <[email-masked]>
Cc: [email-masked]
Cc: [email-masked]

---
v2:
* use standard uart-has-rtscts instead of fsl,uart-has-rtscts
---
 arch/arm/boot/dts/Makefile               |   1 +
 arch/arm/boot/dts/imx7d-sbc-iot-imx7.dts | 198 +++++++++++++++++++++++
 2 files changed, 199 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx7d-sbc-iot-imx7.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9159fa2cea90..78d51f2f9930 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -591,6 +591,7 @@ dtb-$(CONFIG_SOC_IMX7D) += \
 	imx7d-pico-hobbit.dtb \
 	imx7d-pico-pi.dtb \
 	imx7d-sbc-imx7.dtb \
+	imx7d-sbc-iot-imx7.dtb \
 	imx7d-sdb.dtb \
 	imx7d-sdb-reva.dtb \
 	imx7d-sdb-sht11.dtb \
diff --git a/arch/arm/boot/dts/imx7d-sbc-iot-imx7.dts b/arch/arm/boot/dts/imx7d-sbc-iot-imx7.dts
new file mode 100644
index 000000000000..5e72927b05be
--- /dev/null
+++ b/arch/arm/boot/dts/imx7d-sbc-iot-imx7.dts
@@ -0,0 +1,198 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+//
+// Copyright 2017 CompuLab Ltd. - http://www.compulab.co.il/
+/*
+ * Support for CompuLab SBC-IOT-iMX7 Single Board Computer
+ */
+
+#include "imx7d-cl-som-imx7.dts"
+
+/ {
+	model = "CompuLab,SBC-IOT-iMX7";
+	compatible = "compulab,sbc-iot-imx7", "compulab,cl-som-imx7", "fsl,imx7d";
+
+	reg_usb_vbus: regulator-usb-vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb_vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+};
+
+&ecspi3 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_ecspi3 &pinctrl_ecspi3_cs>;
+	cs-gpios = <&gpio4 11 GPIO_ACTIVE_HIGH>;
+	status = "okay";
+};
+
+&i2c3 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c3>;
+	pinctrl-1 = <&pinctrl_i2c3_recovery>;
+	sda-gpios = <&gpio1 9 GPIO_ACTIVE_HIGH>;
+	scl-gpios = <&gpio1 8 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+};
+
+&i2c4 {
+	clock-frequency = <100000>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c4>;
+	pinctrl-1 = <&pinctrl_i2c4_recovery>;
+	sda-gpios = <&gpio1 11 GPIO_ACTIVE_HIGH>;
+	scl-gpios = <&gpio1 10 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+
+	eeprom_iot@54 {
+		compatible = "atmel,24c08";
+		reg = <0x54>;
+		pagesize = <16>;
+	};
+};
+
+&iomuxc {
+	pinctrl-1 = <&pinctrl_xpen>;
+
+	/* SB-IOT-iMX7 Xpension Header P7 */
+	pinctrl_xpen: xpengrp {
+		fsl,pins = <
+			MX7D_PAD_LCD_DATA13__GPIO3_IO18		0x34 /* P7-4 - gpio82 */
+			MX7D_PAD_LCD_DATA12__GPIO3_IO17		0x34 /* P7-5 - gpio81 */
+		>;
+	};
+
+	pinctrl_ecspi3: ecspi3grp {
+		fsl,pins = <
+			MX7D_PAD_I2C1_SDA__ECSPI3_MOSI		0xf /* P7-7 */
+			MX7D_PAD_I2C1_SCL__ECSPI3_MISO		0xf /* P7-8 */
+			MX7D_PAD_I2C2_SCL__ECSPI3_SCLK		0xf /* P7-6 */
+		>;
+	};
+
+	pinctrl_ecspi3_cs: ecspi3_cs_grp {
+		fsl,pins = <
+			MX7D_PAD_I2C2_SDA__GPIO4_IO11		0x34 /* P7-9 */
+		>;
+	};
+
+	pinctrl_i2c3: i2c3grp {
+		fsl,pins = <
+			MX7D_PAD_GPIO1_IO09__I2C3_SDA		0x4000000f /* P7-3 */
+			MX7D_PAD_GPIO1_IO08__I2C3_SCL		0x4000000f /* P7-2 */
+		>;
+	};
+
+	pinctrl_i2c3_recovery: i2c3recoverygrp {
+		fsl,pins = <
+			MX7D_PAD_GPIO1_IO09__GPIO1_IO9		0x4000000f /* P7-3 */
+			MX7D_PAD_GPIO1_IO08__GPIO1_IO8		0x4000000f /* P7-2 */
+		>;
+	};
+
+	pinctrl_i2c4: i2c4grp {
+		fsl,pins = <
+			MX7D_PAD_GPIO1_IO11__I2C4_SDA		0x4000000f
+			MX7D_PAD_GPIO1_IO10__I2C4_SCL		0x4000000f
+		>;
+	};
+
+	pinctrl_i2c4_recovery: i2c4recoverygrp {
+		fsl,pins = <
+			MX7D_PAD_GPIO1_IO11__GPIO1_IO11		0x4000000f
+			MX7D_PAD_GPIO1_IO10__GPIO1_IO10		0x4000000f
+		>;
+	};
+
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX7D_PAD_LCD_ENABLE__UART2_DCE_TX	0x79 /* P7-12 */
+			MX7D_PAD_LCD_CLK__UART2_DCE_RX		0x79 /* P7-13 */
+			MX7D_PAD_LCD_VSYNC__UART2_DCE_CTS	0x79 /* P7-11 */
+			MX7D_PAD_LCD_HSYNC__UART2_DCE_RTS	0x79 /* P7-10 */
+		>;
+	};
+
+	pinctrl_uart5: uart5grp {
+		fsl,pins = <
+			MX7D_PAD_I2C4_SDA__UART5_DCE_TX		0x79 /* RS232-TX */
+			MX7D_PAD_I2C4_SCL__UART5_DCE_RX		0x79 /* RS232-RX */
+			MX7D_PAD_I2C3_SDA__UART5_DCE_RTS	0x79 /* RS232-RTS */
+			MX7D_PAD_I2C3_SCL__UART5_DCE_CTS	0x79 /* RS232-CTS */
+		>;
+	};
+
+	pinctrl_uart7: uart7grp {
+		fsl,pins = <
+			MX7D_PAD_ECSPI2_MOSI__UART7_DCE_TX	0x79 /* R485-TX */
+			MX7D_PAD_ECSPI2_SCLK__UART7_DCE_RX	0x79 /* R485-RX */
+			MX7D_PAD_ECSPI2_SS0__UART7_DCE_CTS	0x79 /* R485-CTS */
+			MX7D_PAD_ECSPI2_MISO__UART7_DCE_RTS	0x79 /* R485-TTS */
+		>;
+	};
+
+	pinctrl_usdhc1: usdhc1grp {
+		fsl,pins = <
+			MX7D_PAD_SD1_CMD__SD1_CMD		0x59
+			MX7D_PAD_SD1_CLK__SD1_CLK		0x19
+			MX7D_PAD_SD1_DATA0__SD1_DATA0		0x59
+			MX7D_PAD_SD1_DATA1__SD1_DATA1		0x59
+			MX7D_PAD_SD1_DATA2__SD1_DATA2		0x59
+			MX7D_PAD_SD1_DATA3__SD1_DATA3		0x59
+			MX7D_PAD_SD1_CD_B__GPIO5_IO0		0x59 /* CD */
+		>;
+	};
+};
+
+&uart2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart2>;
+	assigned-clocks = <&clks IMX7D_UART2_ROOT_SRC>;
+	assigned-clock-parents = <&clks IMX7D_OSC_24M_CLK>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
+&uart5 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart5>;
+	assigned-clocks = <&clks IMX7D_UART5_ROOT_SRC>;
+	assigned-clock-parents = <&clks IMX7D_PLL_SYS_MAIN_240M_CLK>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
+&uart7 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_uart7>;
+	assigned-clocks = <&clks IMX7D_UART7_ROOT_SRC>;
+	assigned-clock-parents = <&clks IMX7D_PLL_SYS_MAIN_240M_CLK>;
+	uart-has-rtscts;
+	status = "okay";
+};
+
+&usbotg1 {
+	vbus-supply = <&reg_usb_vbus>;
+	status = "okay";
+};
+
+&usbotg2 {
+	dr_mode = "host";
+	vbus-supply = <&reg_usb_vbus>;
+	status = "okay";
+};
+
+&usbh {
+	vbus-supply = <&reg_usb_vbus>;
+	status = "okay";
+};
+
+&usdhc1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc1>;
+	cd-gpios = <&gpio5 0 GPIO_ACTIVE_LOW>;
+	wakeup-source;
+	status = "okay";
+};
-- 
2.23.0.rc1

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