[PATCH v8 07/11] arm64: dts: renesas: rzg2l(c)/rzv2l hb-iiot: add dsi panel dt overlay
From: Josua Mayer <hidden>
Date: 2026-09-04 11:57:00
Also in:
linux-gpio, linux-renesas-soc, linux-usb, lkml
Subsystem:
arm/risc-v/renesas architecture, the rest · Maintainers:
Geert Uytterhoeven, Magnus Damm, Linus Torvalds
The SolidRun HummingBoard IIoT features a DSI connector supporting touch-screen displays and is usable with RZ/G2L, RZ/G2LC and RZ/V2L SoMs. Provide addon for the Winstar WJ70N3TYJHMNG0 1024x600 dsi panel. Add the addon in Makefile for all supported SoMs SoC targets. Signed-off-by: Josua Mayer <redacted> --- arch/arm64/boot/dts/renesas/Makefile | 8 +++ ...hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtso | 79 ++++++++++++++++++++++ 2 files changed, 87 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 69b1f75156016..0bc2bbff9370f 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile@@ -170,6 +170,8 @@ r9a07g044c2-hummingboard-iiot-emmc-dtbs := r9a07g044c2-hummingboard-iiot.dtb rzg dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-iiot-emmc.dtb r9a07g044c2-hummingboard-iiot-microsd-dtbs := r9a07g044c2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-microsd.dtbo dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-iiot-microsd.dtb +r9a07g044c2-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0-dtbs := r9a07g044c2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo +dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtb r9a07g044c2-hummingboard-iiot-rs485-a-dtbs := r9a07g044c2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-rs485-a.dtbo dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044c2-hummingboard-iiot-rs485-a.dtb r9a07g044c2-hummingboard-iiot-rs485-b-dtbs := r9a07g044c2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-rs485-b.dtbo
@@ -186,6 +188,9 @@ dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-iiot-emmc.dtb dtb-$(CONFIG_ARCH_R9A07G044) += rzg2l-hummingboard-iiot-microsd.dtbo r9a07g044l2-hummingboard-iiot-microsd-dtbs := r9a07g044l2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-microsd.dtbo dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-iiot-microsd.dtb +dtb-$(CONFIG_ARCH_R9A07G044) += rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo +r9a07g044l2-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0-dtbs := r9a07g044l2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo +dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtb dtb-$(CONFIG_ARCH_R9A07G044) += rzg2l-hummingboard-iiot-rs485-a.dtbo r9a07g044l2-hummingboard-iiot-rs485-a-dtbs := r9a07g044l2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-rs485-a.dtbo dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-hummingboard-iiot-rs485-a.dtb
@@ -205,6 +210,9 @@ dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-hummingboard-iiot-emmc.dtb dtb-$(CONFIG_ARCH_R9A07G054) += rzg2l-hummingboard-iiot-microsd.dtbo r9a07g054l2-hummingboard-iiot-microsd-dtbs := r9a07g054l2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-microsd.dtbo dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-hummingboard-iiot-microsd.dtb +dtb-$(CONFIG_ARCH_R9A07G054) += rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo +r9a07g054l2-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0-dtbs := r9a07g054l2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtbo +dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtb dtb-$(CONFIG_ARCH_R9A07G054) += rzg2l-hummingboard-iiot-rs485-a.dtbo r9a07g054l2-hummingboard-iiot-rs485-a-dtbs := r9a07g054l2-hummingboard-iiot.dtb rzg2l-hummingboard-iiot-rs485-a.dtbo dtb-$(CONFIG_ARCH_R9A07G054) += r9a07g054l2-hummingboard-iiot-rs485-a.dtb
diff --git a/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtso b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtso
new file mode 100644
index 0000000000000..f8584c473fafe
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/rzg2l-hummingboard-iiot-panel-dsi-WJ70N3TYJHMNG0.dtso@@ -0,0 +1,79 @@ +// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +/* + * Copyright 2025 Josua Mayer <josua@solid-run.com> + * + * Overlay for enabling HummingBoard IIoT MIPI-DSI connector + * with Winstar WJ70N3TYJHMNG0 panel. + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/gpio/gpio.h> +#include <dt-bindings/interrupt-controller/irq.h> + +&{/} { + dsi_backlight: dsi-backlight { + compatible = "gpio-backlight"; + gpios = <&tca6408_u48 3 GPIO_ACTIVE_LOW>; + }; +}; + +&i2c_dsi { + #address-cells = <1>; + #size-cells = <0>; + + touchscreen@41 { + compatible = "ilitek,ili2130"; + reg = <0x41>; + /* + * Touchscreen fires short active-low pulses which level trigger + * on i2c gpio expander can miss. Trigger on falling edge instead. + */ + interrupts-extended = <&tca6416_u21 13 IRQ_TYPE_EDGE_FALLING>; + reset-gpios = <&tca6408_u48 6 GPIO_ACTIVE_LOW>; + }; +}; + +&dsi { + #address-cells = <1>; + #size-cells = <0>; + status = "okay"; + + panel@0 { + /* This is a Winstar panel, but the ronbo panel uses same controls. */ + compatible = "ronbo,rb070d30"; + reg = <0>; + /* reset is active-low but driver inverts it internally */ + reset-gpios = <&tca6408_u48 1 GPIO_ACTIVE_HIGH>; + backlight = <&dsi_backlight>; + power-gpios = <&tca6408_u48 2 GPIO_ACTIVE_HIGH>; + shlr-gpios = <&tca6408_u48 4 GPIO_ACTIVE_LOW>; + updn-gpios = <&tca6408_u48 5 GPIO_ACTIVE_HIGH>; + vcc-lcd-supply = <®_dsi_panel>; + + port { + dsi_in_panel: endpoint { + remote-endpoint = <&mipi_dsi_out>; + }; + }; + }; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@1 { + reg = <1>; + + mipi_dsi_out: endpoint { + data-lanes = <1 2 3 4>; + remote-endpoint = <&dsi_in_panel>; + }; + }; + }; +}; + +&du { + status = "okay"; +};
--
2.51.0