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Message-Id: <20210226070304.8028-6-jagan@amarulasolutions.com>
Date:   Fri, 26 Feb 2021 12:32:59 +0530
From:   Jagan Teki <jagan@...rulasolutions.com>
To:     Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     devicetree@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-amarula@...rulasolutions.com,
        Jagan Teki <jagan@...rulasolutions.com>,
        Matteo Lisi <matteo.lisi@...icam.com>,
        Francesco Utel <francesco.utel@...icam.com>,
        Mirko Ardinghi <mirko.ardinghi@...icam.com>
Subject: [PATCH v2 05/10] ARM: dts: 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 an EDIMM SoM based on STM32MP157A from Engicam.

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.

Add support for it.

Signed-off-by: Matteo Lisi <matteo.lisi@...icam.com>
Signed-off-by: Francesco Utel <francesco.utel@...icam.com>
Signed-off-by: Mirko Ardinghi <mirko.ardinghi@...icam.com>
Signed-off-by: Jagan Teki <jagan@...rulasolutions.com>
---
Changes for v2:
- don't create carrier board dtsi, add it in final dts.

 arch/arm/boot/dts/Makefile                    |   1 +
 ...157a-microgea-stm32mp1-microdev2.0-of7.dts | 154 ++++++++++++++++++
 2 files changed, 155 insertions(+)
 create mode 100644 arch/arm/boot/dts/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b4a9cd071f99..1332622a3f9f 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -1072,6 +1072,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32mp157a-dk1.dtb \
 	stm32mp157a-iot-box.dtb \
 	stm32mp157a-microgea-stm32mp1-microdev2.0.dtb \
+	stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dtb \
 	stm32mp157a-stinger96.dtb \
 	stm32mp157c-dhcom-pdk2.dtb \
 	stm32mp157c-dhcom-picoitx.dtb \
diff --git a/arch/arm/boot/dts/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dts b/arch/arm/boot/dts/stm32mp157a-microgea-stm32mp1-microdev2.0-of7.dts
new file mode 100644
index 000000000000..674b2d330dc4
--- /dev/null
+++ b/arch/arm/boot/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";
+};
-- 
2.25.1

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