linux-kernel - [PATCH 3/4] arm64: dts: rockchip: add pine64 touch panel display to rockpro64

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Message-Id: <20220107051335.3812535-4-pgwipeout@gmail.com>
Date:   Fri,  7 Jan 2022 00:13:34 -0500
From:   Peter Geis <pgwipeout@...il.com>
To:     Rob Herring <robh+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc:     Peter Geis <pgwipeout@...il.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/4] arm64: dts: rockchip: add pine64 touch panel display to rockpro64

The Pine64 touch panel is a panel consisting of the Feiyang fy07024di26a30d
panel with a Goodix gt911 touch screen.
Add the device tree nodes to the rockpro64 to permit attaching this display to
the device.

Signed-off-by: Peter Geis <pgwipeout@...il.com>
---
 .../boot/dts/rockchip/rk3399-rockpro64.dtsi   | 80 ++++++++++++++++++-
 1 file changed, 76 insertions(+), 4 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
index 83db4ca67334..158befb9a48c 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dtsi
@@ -20,6 +20,15 @@ chosen {
 		stdout-path = "serial2:1500000n8";
 	};
 
+	/* enable for panel backlight support */
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&pwm0 0 1000000 0>;
+		brightness-levels = <0 4 8 16 32 64 128 255>;
+		default-brightness-level = <5>;
+		status = "disabled";
+	};
+
 	clkin_gmac: external-gmac-clock {
 		compatible = "fixed-clock";
 		clock-frequency = <125000000>;
@@ -220,6 +229,14 @@ vdd_log: vdd-log {
 		regulator-max-microvolt = <1700000>;
 		vin-supply = <&vcc5v0_sys>;
 	};
+
+	avdd: avdd {
+		compatible = "regulator-fixed";
+		regulator-name = "avdd";
+		regulator-min-microvolt = <11000000>;
+		regulator-max-microvolt = <11000000>;
+		vin-supply = <&vcc3v3_s0>;
+	};
 };
 
 &cpu_l0 {
@@ -301,6 +318,11 @@ &hdmi {
 	status = "okay";
 };
 
+/* force hdmi to vopb */
+&hdmi_in_vopl {
+	status = "disabled";
+};
+
 &hdmi_sound {
 	status = "okay";
 };
@@ -400,8 +422,6 @@ regulator-state-mem {
 
 			vcc3v0_touch: LDO_REG2 {
 				regulator-name = "vcc3v0_touch";
-				regulator-always-on;
-				regulator-boot-on;
 				regulator-min-microvolt = <3000000>;
 				regulator-max-microvolt = <3000000>;
 				regulator-state-mem {
@@ -490,8 +510,6 @@ regulator-state-mem {
 
 			vcc3v3_s0: SWITCH_REG2 {
 				regulator-name = "vcc3v3_s0";
-				regulator-always-on;
-				regulator-boot-on;
 				regulator-state-mem {
 					regulator-off-in-suspend;
 				};
@@ -565,6 +583,19 @@ fusb0: typec-portc@22 {
 		vbus-supply = <&vcc5v0_typec>;
 		status = "okay";
 	};
+
+	/* enable for pine64 touch screen support */
+	touch: touchscreen@5d {
+		compatible = "goodix,gt911";
+		reg = <0x5d>;
+		AVDD28-supply = <&vcc3v0_touch>;
+		VDDIO-supply = <&vcc3v0_touch>;
+		interrupt-parent = <&gpio4>;
+		interrupts = <RK_PD5 IRQ_TYPE_EDGE_FALLING>;
+		irq-gpios = <&gpio4 RK_PD5 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&gpio4 RK_PD6 GPIO_ACTIVE_HIGH>;
+		status = "disabled";
+	};
 };
 
 &i2s0 {
@@ -600,6 +631,47 @@ &io_domains {
 	gpio1830-supply = <&vcc_3v0>;
 };
 
+/* enable for pine64 panel display support */
+&mipi_dsi {
+	status = "disabled";
+	clock-master;
+
+	ports {
+		mipi_out: port@1 {
+			reg = <1>;
+
+			mipi_out_panel: endpoint {
+				remote-endpoint = <&mipi_in_panel>;
+			};
+		};
+	};
+
+	mipi_panel: panel@0 {
+		compatible = "feiyang,fy07024di26a30d";
+		reg = <0>;
+		avdd-supply = <&avdd>;
+		backlight = <&backlight>;
+		dvdd-supply = <&vcc3v3_s0>;
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port@0 {
+				reg = <0>;
+
+				mipi_in_panel: endpoint {
+					remote-endpoint = <&mipi_out_panel>;
+				};
+			};
+		};
+	};
+};
+
+/* force dsi to vopl */
+&mipi_in_vopb {
+	status="disabled";
+};
+
 &pcie0 {
 	ep-gpios = <&gpio2 RK_PD4 GPIO_ACTIVE_HIGH>;
 	num-lanes = <4>;
-- 
2.32.0