[PATCH v4 2/2] arm64: dts: renesas: Add HiHope RZ/G2M board with idk-1110wr display

[Lad Prabhakar]

From: Fabrizio Castro <fabrizio.castro at bp.renesas.com>

The HiHope RZ/G2M is advertised as compatible with panel idk-1110wr
from Advantech, however the panel isn't sold alongside the board.
A new dts, adding everything that's required to get the panel to
work with HiHope RZ/G2M, is the most convenient way to support the
HiHope RZ/G2M when it's connected to the idk-1110wr.

Signed-off-by: Fabrizio Castro <fabrizio.castro at bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj at bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/Makefile               |  1 +
 .../r8a774a1-hihope-rzg2m-ex-idk-1110wr.dts        | 52 ++++++++++++++++++++++
 2 files changed, 53 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a774a1-hihope-rzg2m-ex-idk-1110wr.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 2153842..82dd245 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -1,6 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m.dtb
 dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-ex.dtb
+dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-ex-idk-1110wr.dtb
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-hihope-rzg2n.dtb
 dtb-$(CONFIG_ARCH_R8A774B1) += r8a774b1-hihope-rzg2n-ex.dtb
 dtb-$(CONFIG_ARCH_R8A774C0) += r8a774c0-cat874.dtb r8a774c0-ek874.dtb \
diff --git a/arch/arm64/boot/dts/renesas/r8a774a1-hihope-rzg2m-ex-idk-1110wr.dts b/arch/arm64/boot/dts/renesas/r8a774a1-hihope-rzg2m-ex-idk-1110wr.dts
new file mode 100644
index 0000000..2ab5edd
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a774a1-hihope-rzg2m-ex-idk-1110wr.dts
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the HiHope RZ/G2M sub board connected to an
+ * Advantech IDK-1110WR 10.1" LVDS panel
+ *
+ * Copyright (C) 2020 Renesas Electronics Corp.
+ */
+
+#include "r8a774a1-hihope-rzg2m-ex.dts"
+#include "rzg2-advantech-idk-1110wr-panel.dtsi"
+
+/ {
+	backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm0 0 50000>;
+
+		brightness-levels = <0 2 8 16 32 64 128 255>;
+		default-brightness-level = <6>;
+	};
+
+};
+
+&gpio1 {
+	/*
+	 * When GP1_20 is LOW LVDS0 is connected to the LVDS connector
+	 * When GP1_20 is HIGH LVDS0 is connected to the LT8918L
+	 */
+	lvds-connector-en-gpio {
+		gpio-hog;
+		gpios = <20 GPIO_ACTIVE_HIGH>;
+		output-low;
+		line-name = "lvds-connector-en-gpio";
+	};
+};
+
+&lvds0 {
+	status = "okay";
+};
+
+&pfc {
+	pwm0_pins: pwm0 {
+		groups = "pwm0";
+		function = "pwm0";
+	};
+};
+
+&pwm0 {
+	pinctrl-0 = <&pwm0_pins>;
+	pinctrl-names = "default";
+
+	status = "okay";
+};
-- 
2.7.4