linux-kernel - [PATCH v4 1/2] arm64: dts: ti: am65x: Add Rocktech OLDI panel DT overlay

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Date:   Tue, 9 May 2023 15:53:53 +0530
From:   Aradhya Bhatia <a-bhatia1@...com>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Andrew Davis <afd@...com>, Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Conor Dooley <conor+dt@...nel.org>,
        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 v4 1/2] arm64: dts: ti: am65x: Add Rocktech OLDI panel DT overlay

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

The OLDI-LCD1EVM add on board has Rocktech RK101II01D-CT panel[1] with
integrated touch screen. The integrated touch screen is Goodix GT928.
This panel connects with AM65 GP-EVM[2].

Add DT nodes for these and connect the endpoint nodes with DSS.

[1]: Panel link
https://www.digimax.it/en/tft-lcd/20881-RK101II01D-CT

[2]: AM654 LCD EVM:
https://www.ti.com/tool/TMDSLCD1EVM

Signed-off-by: Jyri Sarha <jsarha@...com>
Signed-off-by: Nikhil Devshatwar <nikhil.nd@...com>
[abhatia1@...com: Make cosmetic and 6.4 kernel DTSO syntax changes]
Signed-off-by: Aradhya Bhatia <a-bhatia1@...com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>
Reviewed-by: Andrew Davis <afd@...com>
---
 arch/arm64/boot/dts/ti/Makefile               |  2 +
 ...am654-base-board-rocktech-rk101-panel.dtso | 71 +++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index c83c9d772b81..47b0d257b508 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -22,12 +22,14 @@ dtb-$(CONFIG_ARCH_K3) += k3-am642-phyboard-electra-rdk.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am642-sk.dtb
 
 # Boards with AM65x SoC
+k3-am654-gp-evm-dtbs := k3-am654-base-board.dtb k3-am654-base-board-rocktech-rk101-panel.dtbo
 dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic.dtb
 dtb-$(CONFIG_ARCH_K3) += k3-am6528-iot2050-basic-pg2.dtb
 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-gp-evm.dtb
 
 # Boards with J7200 SoC
 k3-j7200-evm-dtbs := k3-j7200-common-proc-board.dtb k3-j7200-evm-quad-port-eth-exp.dtbo
diff --git a/arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso b/arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso
new file mode 100644
index 000000000000..b507e2bd444e
--- /dev/null
+++ b/arch/arm64/boot/dts/ti/k3-am654-base-board-rocktech-rk101-panel.dtso
@@ -0,0 +1,71 @@
+// SPDX-License-Identifier: GPL-2.0
+/**
+ * OLDI-LCD1EVM Rocktech integrated panel and touch DT overlay for AM654-EVM.
+ * Panel Link: https://www.digimax.it/en/tft-lcd/20881-RK101II01D-CT
+ * AM654 LCD EVM: https://www.ti.com/tool/TMDSLCD1EVM
+ *
+ * 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>;
+
+	touchscreen@14 {
+		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>;
+	};
+};
-- 
2.40.1