linux-kernel - [PATCH 1/2] arm64: dts: ti: Add overlay for OLDI-LCD1EVM Display and touch screen

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Message-ID: <20230425051235.15533-2-a-bhatia1@ti.com>
Date:   Tue, 25 Apr 2023 10:42:34 +0530
From:   Aradhya Bhatia <a-bhatia1@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>
CC:     Devicetree List <devicetree@...r.kernel.org>,
        Linux Kernel List <linux-kernel@...r.kernel.org>,
        Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
        Jyri Sarha <jyri.sarha@....fi>,
        Tomi Valkeinen <tomba@...nel.org>,
        Praneeth Bajjuri <praneeth@...com>,
        Rahul T R <r-ravikumar@...com>,
        Devarsh Thakkar <devarsht@...com>,
        Jai Luthra <j-luthra@...com>,
        Jayesh Choudhary <j-choudhary@...com>,
        Aradhya Bhatia <a-bhatia1@...com>
Subject: [PATCH 1/2] arm64: dts: ti: Add overlay for OLDI-LCD1EVM Display and touch screen

From: Jyri Sarha <jsarha@...com>

The OLDI-LCD1EVM add on board has Rocktech RK101II01D-CT panel with
integrated touch screen. The integrated touch screen is Goodix GT928.
Add DT nodes for these and connect the endpoint nodes with DSS.

This patch was picked from TI's public tree based on 5.10 LTS kernel.

Signed-off-by: Jyri Sarha <jsarha@...com>
Signed-off-by: Nikhil Devshatwar <nikhil.nd@...com>
[abhatia1@...com: Make syntax changes to support 6.1 DTSO format]
Signed-off-by: Aradhya Bhatia <a-bhatia1@...com>
---
 arch/arm64/boot/dts/ti/Makefile               |  2 +
 .../dts/ti/k3-am654-evm-oldi-lcd1evm.dtso     | 70 +++++++++++++++++++
 2 files changed, 72 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am654-evm-oldi-lcd1evm.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 6acd12409d59..8956b19e587a 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -26,6 +26,7 @@ dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced-m2.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6548-iot2050-advanced-pg2.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am654-base-board.dtb
+dtb-$(CONFIG_ARCH_K3) += k3-am654-evm-oldi-lcd1evm.dtbo
 
 # Boards with J7200 SoC
 dtb-$(CONFIG_ARCH_K3) += k3-j7200-common-proc-board.dtb
@@ -45,3 +46,4 @@ dtb-$(CONFIG_ARCH_K3) += k3-j784s4-evm.dtb
 
 # Enable support for device-tree overlays
 DTC_FLAGS_k3-am6548-iot2050-advanced-m2 += -@
+DTC_FLAGS_k3-am654-base-board += -@
diff --git a/arch/arm64/boot/dts/ti/k3-am654-evm-oldi-lcd1evm.dtso b/arch/arm64/boot/dts/ti/k3-am654-evm-oldi-lcd1evm.dtso
new file mode 100644
index 000000000000..b2c790b314cf
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am654-evm-oldi-lcd1evm.dtso
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * OLDI-LCD1EVM Rocktech integrated panel and touch DT overlay for AM654-EVM.
+ *
+ * Copyright (C) 2023 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include <dt-bindings/pwm/pwm.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+&{/} {
+	display0 {
+		compatible = "rocktech,rk101ii01d-ct";
+		backlight = <&lcd_bl>;
+		enable-gpios = <&pca9555 8 GPIO_ACTIVE_HIGH>;
+		port {
+			lcd_in0: endpoint {
+				remote-endpoint = <&oldi_out0>;
+			};
+		};
+	};
+
+	lcd_bl: backlight {
+		compatible = "pwm-backlight";
+		pwms = <&ecap0 0 50000 PWM_POLARITY_INVERTED>;
+		brightness-levels =
+			<0 32 64 96 128 160 192 224 255>;
+		default-brightness-level = <8>;
+	};
+};
+
+&dss {
+	status = "okay";
+};
+
+&dss_ports {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	port@0 {
+		reg = <0>;
+
+		oldi_out0: endpoint {
+			remote-endpoint = <&lcd_in0>;
+		};
+	};
+};
+
+&main_i2c1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	gt928: touchscreen@14 {
+		status = "okay";
+		compatible = "goodix,gt928";
+		reg = <0x14>;
+
+		interrupt-parent = <&pca9554>;
+		interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+		touchscreen-size-x = <1280>;
+		touchscreen-size-y = <800>;
+
+		reset-gpios = <&pca9555 9 GPIO_ACTIVE_HIGH>;
+		irq-gpios = <&pca9554 3 GPIO_ACTIVE_HIGH>;
+	};
+};
-- 
2.39.1