arch/arm64/boot/dts/renesas/r9a09g057h48-kakip-pixpaper.dtso

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/renesas/r9a09g057h48-kakip-pixpaper.dtso

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/renesas/r9a09g057h48-kakip-pixpaper.dtso
Extension
.dtso
Size
997 bytes
Lines
40
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: arch/arm64
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
/*
 * Device Tree Overlay for Mayqueen (Open-EP Community) pixpaper display
 * support on Renesas RZ/V2H platform (KAKIP board).
 *
 * Copyright (C) 2026 Wig Cheng <onlywig@gmail.com>
 */

/dts-v1/;
/plugin/;

#include <dt-bindings/pinctrl/renesas,r9a09g057-pinctrl.h>
#include <dt-bindings/gpio/gpio.h>

&pinctrl {
	rspi0_pins: rspi0 {
		pinmux = <RZV2H_PORT_PINMUX(9, 0, 1)>, /* SPI0 MOSI */
			 <RZV2H_PORT_PINMUX(9, 1, 1)>, /* SPI0 MISO */
			 <RZV2H_PORT_PINMUX(9, 2, 1)>, /* SPI0 CLK */
			 <RZV2H_PORT_PINMUX(9, 3, 1)>; /* SPI0 CE0 */
	};
};

&rspi0 {
	pinctrl-0 = <&rspi0_pins>;
	pinctrl-names = "default";
	#address-cells = <1>;
	#size-cells = <0>;
	status = "okay";

	display@0 {
		compatible = "mayqueen,pixpaper";
		reg = <0>;
		spi-max-frequency = <1000000>;
		reset-gpios = <&pinctrl RZV2H_GPIO(A, 7) GPIO_ACTIVE_HIGH>;
		busy-gpios = <&pinctrl RZV2H_GPIO(B, 3) GPIO_ACTIVE_HIGH>;
		dc-gpios = <&pinctrl RZV2H_GPIO(7, 4) GPIO_ACTIVE_HIGH>;
	};
};

Annotation

Implementation Notes