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arm64: dts: rockchip: Add overlay for FriendlyElec HD702E

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Add an overlay to support FriendlyElec's HD702E 7" eDP LCD touchscreen
module for the NanoPC-T4 board:

https://www.friendlyelec.com/index.php?route=product/product&path=81&product_id=230

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://patch.msgid.link/2bbc2e62ae9b54ac7594355001ce2b15885d3493.1769191673.git.robin.murphy@arm.com
[changed edp-panel auxbus node to panel to conform to the binding]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Robin Murphy 2026-01-23 19:22:23 +00:00 committed by Heiko Stuebner
parent 638fa970ac
commit 25afddad23
2 changed files with 101 additions and 0 deletions
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5
arch/arm64/boot/dts/rockchip/Makefile
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@ -63,6 +63,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-khadas-edge-v.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-kobol-helios64.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-leez-p710.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopc-t4.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopc-t4-hd702e.dtbo
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-m4.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-m4b.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopi-neo4.dtb
@ -249,6 +250,10 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += px30-ringneck-haikou-haikou-video-demo.dtb
px30-ringneck-haikou-haikou-video-demo-dtbs := px30-ringneck-haikou.dtb \
px30-ringneck-haikou-video-demo.dtbo
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-nanopc-t4-hd702e.dtb
rk3399-nanopc-t4-hd702e-dtbs := rk3399-nanopc-t4.dtb \
rk3399-nanopc-t4-hd702e.dtbo
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3368-lion-haikou-haikou-video-demo.dtb
rk3368-lion-haikou-haikou-video-demo-dtbs := rk3368-lion-haikou.dtb \
rk3368-lion-haikou-video-demo.dtbo

96
arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4-hd702e.dtso Normal file
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@ -0,0 +1,96 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* FriendlyElec HD702E LCD on NanoPC-T4 board
*/
/dts-v1/;
/plugin/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/pinctrl/rockchip.h>
&{/} {
vdd_3_3v: regulator-vdd_3_3v {
compatible = "regulator-fixed";
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vdd_3.3v";
vin-supply = <&vcc12v0_sys>;
};
backlight: backlight {
compatible = "pwm-backlight";
pwms = <&pwm0 0 25000 0>;
enable-gpios = <&gpio4 RK_PD5 GPIO_ACTIVE_HIGH>;
brightness-levels = <0 255>;
default-brightness-level = <200>;
num-interpolated-steps = <255>;
pinctrl-0 = <&bl_en>;
pinctrl-names = "default";
};
};
&edp {
force-hpd;
status = "okay";
aux-bus {
panel {
compatible = "friendlyarm,hd702e";
backlight = <&backlight>;
no-hpd;
power-supply = <&vdd_3_3v>;
port {
panel_in_edp: endpoint {
remote-endpoint = <&edp_out_panel>;
};
};
};
};
};
&edp_out {
edp_out_panel: endpoint {
remote-endpoint = <&panel_in_edp>;
};
};
&i2c4 {
#address-cells = <1>;
#size-cells = <0>;
touchscreen@5d {
compatible = "goodix,gt9271";
reg = <0x5d>;
interrupt-parent = <&gpio1>;
interrupts = <RK_PC4 IRQ_TYPE_EDGE_FALLING>;
irq-gpios = <&gpio1 RK_PC4 GPIO_ACTIVE_HIGH>;
reset-gpios = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;
pinctrl-0 = <&touch_int &touch_rst>;
pinctrl-names = "default";
AVDD28-supply = <&vdd_3_3v>;
VDDIO-supply = <&vdd_3_3v>;
};
};
&pinctrl {
backlight {
bl_en: bl-en {
rockchip,pins = <4 RK_PD5 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
touchscreen {
touch_int: touch-int {
rockchip,pins = <1 RK_PC4 RK_FUNC_GPIO &pcfg_pull_none>;
};
touch_rst: touch-rst {
rockchip,pins = <1 RK_PB5 RK_FUNC_GPIO &pcfg_pull_none>;
};
};
};