[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.tor...@st.com>

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.tor...@st.com> 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