[PATCH 2/2] ARM: dts: stm32: add initial support of stm32mp157c-dk2 board

[Alexandre Torgue]

Add support of stm32mp157c discovery2 board (part number: STM32MP157C-DK2).
This board is a "super-set" of stm32mp157a-dk1. It embeds a STM32MP157c SOC
with AC package (TFBGA361, 148 ios) and 512MB of DDR3. Same connections
than stm32mp157a-dk1 board are available. Display panel (otm8009a) and
Murata wifi/BT combo is added.

This patch adds basic support for a kernel boot and enable otm8009a display
panel.

Signed-off-by: Alexandre Torgue <alexandre.torgue@xxxxxx>

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index a1ca713..b3105e7 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -952,6 +952,7 @@ dtb-$(CONFIG_ARCH_STM32) += \
 	stm32h743i-eval.dtb \
 	stm32h743i-disco.dtb \
 	stm32mp157a-dk1.dtb \
+	stm32mp157c-dk2.dtb \
 	stm32mp157c-ed1.dtb \
 	stm32mp157c-ev1.dtb
 dtb-$(CONFIG_MACH_SUN4I) += \
diff --git a/arch/arm/boot/dts/stm32mp157c-dk2.dts b/arch/arm/boot/dts/stm32mp157c-dk2.dts
new file mode 100644
index 0000000..363aeb9
--- /dev/null
+++ b/arch/arm/boot/dts/stm32mp157c-dk2.dts
@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * Copyright (C) STMicroelectronics 2019 - All Rights Reserved
+ * Author: Alexandre Torgue <alexandre.torgue@xxxxxx> for STMicroelectronics.
+ */
+
+/dts-v1/;
+
+#include "stm32mp157a-dk1.dts"
+
+/ {
+	model = "STMicroelectronics STM32MP157C-DK2 Discovery Board";
+	compatible = "st,stm32mp157c-dk2", "st,stm32mp157";
+
+	reg18: reg18 {
+		compatible = "regulator-fixed";
+		regulator-name = "reg18";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+};
+
+&dsi {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+	phy-dsi-supply = <&reg18>;
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			dsi_in: endpoint {
+				remote-endpoint = <&ltdc_ep1_out>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+			dsi_out: endpoint {
+				remote-endpoint = <&panel_in>;
+			};
+		};
+	};
+
+	panel@0 {
+		compatible = "orisetech,otm8009a";
+		reg = <0>;
+		reset-gpios = <&gpioe 4 GPIO_ACTIVE_LOW>;
+		status = "okay";
+
+		port {
+			panel_in: endpoint {
+				remote-endpoint = <&dsi_out>;
+			};
+		};
+	};
+};
+
+&ltdc {
+	status = "okay";
+
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		ltdc_ep1_out: endpoint@1 {
+			reg = <1>;
+			remote-endpoint = <&dsi_in>;
+		};
+	};
+};
-- 
2.7.4