commit 0441b48570697195b924d83c0fd0dcb9f35e1865
author Jagan Teki <jagan@amarulasolutions.com> Tue Mar 16 21:52:07 2021 +0530
committer Patrice Chotard <patrice.chotard@foss.st.com> Fri Apr 09 11:53:00 2021 +0200
tree 4322f50c124aa4b9abc8697c6c90b1def7411990
parent fd4dc09a4cec3ce43a87cb9a3abcc7142aa1949d

board: stm32: Add Engicam MicroGEA STM32MP1 MicroDev 2.0 7" OF

7" OF is a capacitive touch 7" Open Frame panel solutions with
- 7" AUO B101AW03 LVDS panel
- EDT, FT5526 Touch

MicroGEA STM32MP1 is a STM32MP157A based Micro SoM.

MicroDev 2.0 is a general purpose miniature carrier board with CAN,
LTE and LVDS panel interfaces.

MicroGEA STM32MP1 needs to mount on top of MicroDev 2.0 board with
pluged 7" OF for creating complete MicroGEA STM32MP1 MicroDev 2.0
7" Open Frame Solution board.

Linux dts commit details:

commit <1d278204cbaa> ("ARM: dts: stm32: Add Engicam MicroGEA STM32MP1
MicroDev 2.0 7" OF")

Add support for it.

Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>

arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dts

diff --git a/arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dts b/arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dts
new file mode 100644
index 0000000..674b2d3
--- /dev/null
+++ b/arch/arm/dts/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dts
@@ -0,0 +1,154 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (c) STMicroelectronics 2019 - All Rights Reserved
+ * Copyright (c) 2020 Engicam srl
+ * Copyright (c) 2020 Amarula Solutons(India)
+ */
+
+/dts-v1/;
+#include "stm32mp157.dtsi"
+#include "stm32mp157a-microgea-stm32mp1.dtsi"
+#include "stm32mp15-pinctrl.dtsi"
+#include "stm32mp15xxaa-pinctrl.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+	model = "Engicam MicroGEA STM32MP1 MicroDev 2.0 7\" Open Frame";
+	compatible = "engicam,microgea-stm32mp1-microdev2.0-of7",
+		     "engicam,microgea-stm32mp1", "st,stm32mp157";
+
+	aliases {
+		serial0 = &uart4;
+		serial1 = &uart8;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	backlight: backlight {
+		compatible = "gpio-backlight";
+		gpios = <&gpiod 13 GPIO_ACTIVE_HIGH>;
+		default-on;
+	};
+
+	lcd_3v3: regulator-lcd-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "lcd_3v3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpiof 10 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
+		regulator-always-on;
+		power-supply = <&panel_pwr>;
+	};
+
+	panel_pwr: regulator-panel-pwr {
+		compatible = "regulator-fixed";
+		regulator-name = "panel_pwr";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpiob 10 GPIO_ACTIVE_HIGH>;
+		regulator-always-on;
+	};
+
+	panel {
+		compatible = "auo,b101aw03";
+		backlight = <&backlight>;
+		enable-gpios = <&gpiof 2 GPIO_ACTIVE_HIGH>;
+		power-supply = <&lcd_3v3>;
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&ltdc_ep0_out>;
+			};
+		};
+	};
+};
+
+&i2c2 {
+	i2c-scl-falling-time-ns = <20>;
+	i2c-scl-rising-time-ns = <185>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&i2c2_pins_a>;
+	pinctrl-1 = <&i2c2_sleep_pins_a>;
+	status = "okay";
+};
+
+&ltdc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&ltdc_pins>;
+	status = "okay";
+
+	port {
+		ltdc_ep0_out: endpoint@0 {
+			reg = <0>;
+			remote-endpoint = <&panel_in>;
+		};
+	};
+};
+
+&pinctrl {
+	ltdc_pins: ltdc {
+		pins {
+			pinmux = <STM32_PINMUX('G', 10, AF14)>,	/* LTDC_B2 */
+				 <STM32_PINMUX('H', 12, AF14)>,	/* LTDC_R6 */
+				 <STM32_PINMUX('H', 11, AF14)>,	/* LTDC_R5 */
+				 <STM32_PINMUX('D', 10, AF14)>,	/* LTDC_B3 */
+				 <STM32_PINMUX('D', 9, AF14)>,	/* LTDC_B0 */
+				 <STM32_PINMUX('E', 5, AF14)>,	/* LTDC_G0 */
+				 <STM32_PINMUX('E', 6, AF14)>,	/* LTDC_G1 */
+				 <STM32_PINMUX('E', 13, AF14)>,	/* LTDC_DE */
+				 <STM32_PINMUX('E', 15, AF14)>,	/* LTDC_R7 */
+				 <STM32_PINMUX('G', 7, AF14)>,	/* LTDC_CLK */
+				 <STM32_PINMUX('G', 12, AF14)>,	/* LTDC_B1 */
+				 <STM32_PINMUX('H', 2, AF14)>,	/* LTDC_R0 */
+				 <STM32_PINMUX('H', 3, AF14)>,	/* LTDC_R1 */
+				 <STM32_PINMUX('H', 8, AF14)>,	/* LTDC_R2 */
+				 <STM32_PINMUX('H', 9, AF14)>,	/* LTDC_R3 */
+				 <STM32_PINMUX('H', 10, AF14)>,	/* LTDC_R4 */
+				 <STM32_PINMUX('H', 13, AF14)>,	/* LTDC_G2 */
+				 <STM32_PINMUX('H', 14, AF14)>,	/* LTDC_G3 */
+				 <STM32_PINMUX('H', 15, AF14)>,	/* LTDC_G4 */
+				 <STM32_PINMUX('I', 0, AF14)>,	/* LTDC_G5 */
+				 <STM32_PINMUX('I', 1, AF14)>,	/* LTDC_G6 */
+				 <STM32_PINMUX('I', 2, AF14)>,	/* LTDC_G7 */
+				 <STM32_PINMUX('I', 4, AF14)>,	/* LTDC_B4 */
+				 <STM32_PINMUX('I', 5, AF14)>,	/* LTDC_B5 */
+				 <STM32_PINMUX('B', 8, AF14)>,	/* LTDC_B6 */
+				 <STM32_PINMUX('I', 7, AF14)>,	/* LTDC_B7 */
+				 <STM32_PINMUX('I', 9, AF14)>,	/* LTDC_VSYNC */
+				 <STM32_PINMUX('I', 10, AF14)>;	/* LTDC_HSYNC */
+			bias-disable;
+			drive-push-pull;
+			slew-rate = <3>;
+		};
+	};
+};
+
+&sdmmc1 {
+	bus-width = <4>;
+	disable-wp;
+	pinctrl-names = "default", "opendrain", "sleep";
+	pinctrl-0 = <&sdmmc1_b4_pins_a>;
+	pinctrl-1 = <&sdmmc1_b4_od_pins_a>;
+	pinctrl-2 = <&sdmmc1_b4_sleep_pins_a>;
+	st,neg-edge;
+	vmmc-supply = <&vdd>;
+	status = "okay";
+};
+
+&uart4 {
+	pinctrl-names = "default", "sleep", "idle";
+	pinctrl-0 = <&uart4_pins_a>;
+	pinctrl-1 = <&uart4_sleep_pins_a>;
+	pinctrl-2 = <&uart4_idle_pins_a>;
+	status = "okay";
+};
+
+/* J31: RS323 */
+&uart8 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart8_pins_a>;
+	status = "okay";
+};