From bedefd8169b607f86f9f79460166e1667480dcdd Mon Sep 17 00:00:00 2001
From: Lee Seungcheol <john.lee@hardkernel.com>
Date: Thu, 6 Jan 2022 11:37:31 +0900
Subject: [PATCH] ODROID-M1: dtb/dtbo: add hktft32 and ads7846 dtbo for
 Hardkernel 3.2 inch TFT LCD

Signed-off-by: Steve Jeong <steve@how2flow.net>
Change-Id: Ia98cce979e2f66044af217ac392d35e15283f999
---
 .../dts/rockchip/overlays/odroidm1/Makefile   |  1 +
 .../rockchip/overlays/odroidm1/hktft32.dts    | 54 +++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/overlays/odroidm1/hktft32.dts

diff --git a/arch/arm64/boot/dts/rockchip/overlays/odroidm1/Makefile b/arch/arm64/boot/dts/rockchip/overlays/odroidm1/Makefile
index 3c7ba7e3b98a..ca31bce50d2f 100644
--- a/arch/arm64/boot/dts/rockchip/overlays/odroidm1/Makefile
+++ b/arch/arm64/boot/dts/rockchip/overlays/odroidm1/Makefile
@@ -4,6 +4,7 @@ dtbo-$(CONFIG_ARCH_ROCKCHIP_ODROIDM1) += \
 	blueled_off.dtbo \
 	can0.dtbo \
 	dht11.dtbo \
+	hktft32.dtbo \
 	i2c0.dtbo \
 	i2c1.dtbo \
 	mcp2515.dtbo \
diff --git a/arch/arm64/boot/dts/rockchip/overlays/odroidm1/hktft32.dts b/arch/arm64/boot/dts/rockchip/overlays/odroidm1/hktft32.dts
new file mode 100644
index 000000000000..d9cea60109ef
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/overlays/odroidm1/hktft32.dts
@@ -0,0 +1,54 @@
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+
+/{
+	fragment@0 {
+		target = <&spi0>;
+
+		__overlay__ {
+			status = "okay";
+
+			num_chipselect = <2>;
+			cs-gpios = <&gpio2 RK_PD2 GPIO_ACTIVE_LOW>,
+			           <&gpio3 RK_PD2 GPIO_ACTIVE_LOW>;
+
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hktft32: hktft32@0 {
+				status = "okay";
+				compatible = "hardkernel,hktft32";
+				reg = <0>;
+				spi-max-frequency = <40000000>;
+				rotation = <90>;
+				reset-gpios = <&gpio0 RK_PC1 GPIO_ACTIVE_HIGH>;
+				dc-gpios = <&gpio3 RK_PB2 GPIO_ACTIVE_HIGH>;
+			};
+
+			ads7846: ads7846@1 {
+				status = "okay";
+				compatible = "ti,ads7846";
+
+				spi-max-frequency = <2000000>;
+				reg = <1>;
+
+				interrupt-parent = <&gpio0>;
+				interrupts = <RK_PC0 0>;
+				pendown-gpio = <&gpio0 RK_PC0 GPIO_ACTIVE_HIGH>;
+
+				ti,swap-xy = <1>;
+				ti,x-min = /bits/ 16 <0>;
+				ti,x-max = /bits/ 16 <8000>;
+				ti,y-min = /bits/ 16 <0>;
+				ti,y-max = /bits/ 16 <4800>;
+				ti,x-plate-ohms = /bits/ 16 <40>;
+				ti,pressure-max = /bits/ 16 <255>;
+
+				linux,wakeup;
+			};
+		};
+	};
+};