20260128让天启AIO-3576Q38开发板在Rockchip瑞芯微原厂Buildroot下打开HDMI显示【在uboot阶段拉高GPIO26】

rootroot@rootroot-X99-Turbo:~/proj/RK3576_Linux6.1$ ll
rootroot@rootroot-X99-Turbo:~/proj/RK3576_Linux6.1$ ll *sh
lrwxrwxrwx 1 rootroot rootroot 39 3月 8 2025 build.sh -> device/rockchip/common/scripts/build.sh*
lrwxrwxrwx 1 rootroot rootroot 41 3月 8 2025 rkflash.sh -> device/rockchip/common/scripts/rkflash.sh*
rootroot@rootroot-X99-Turbo:~/proj/RK3576_Linux6.1$
rootroot@rootroot-X99-Turbo:~/proj/RK3576_Linux6.1$ ./build.sh lunch
3. rockchip_rk3576_evb1_v10_defconfig
Which would you like? [1]: 3
rootroot@rootroot-X99-Turbo:~/proj/RK3576_Linux6.1$ ./build.sh

echo 26 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio26/direction
echo 1 > /sys/class/gpio/gpio26/value

20260128让天启AIO-3576Q38开发板在Rockchip瑞芯微原厂Buildroot下打开HDMI显示【在uboot阶段拉高GPIO26】
2026/1/28 17:10

缘起：让天启AIO-3576Q38开发板在Rockchip瑞芯微原厂Buildroot下打开HDMI显示
默认编译，天启AIO-3576Q38开发板 的HDMI是没有显示的。
偶然的原因拉高GPIO26/GPIO0D2的时候，HDMI有显示了！^_
【可控】GPIO0_d2_D SYS_LED电源指示灯 0D2 24+2=26
看原理图得知：GPIO26/GPIO0D2 控制 VCC_SYS_EN【看名字是系统的总电源！】
VCC5V0_SYS、VCC3V3_SYS 这两路电源【+5.0V/+3.3V】都是受 GPIO26/GPIO0D2 所控制的，开机就必须打开！

当你把荣品RD-RK3588开发板重新适配一把，就相当于从头做了一个项目：【荣品RD-RK3588开发板】。
当然，开发板的功能都是好的，你免除了调试的过程，也就没有解决相关硬件出错的经验/机会了！

1、
Z:\git_RK3576_Linux6.1\kernel-6.1\arch\arm64\boot\dts\rockchip\rk3576-evb1-v10-linux.dts
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2024 Rockchip Electronics Co., Ltd.
*
*/

/dts-v1/;

#include "rk3576.dtsi"
#include "rk3576-evb1.dtsi"
#include "rk3576-evb1-cam-dcphy0.dtsi"
#include "rk3576-linux.dtsi"

/ {
model = "Rockchip RK3576 EVB1 V10 Board";
compatible = "rockchip,rk3576-evb1-v10", "rockchip,rk3576";


// 2026/1/28 16:45 wenyuanbo add for HDMI [VCC5V0_SYS VCC3V3_SYS]
gpiotest: gpiotest-regulator { //gpio power enable
compatible = "regulator-fixed";
gpios = <&gpio0 RK_PD2 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&gpiopower>;
regulator-name = "vcc_camear";
enable-active-high;
regulator-always-on;
regulator-boot-on;
};
};

&pinctrl {
// 2026/1/28 16:45 wenyuanbo add for HDMI [VCC5V0_SYS VCC3V3_SYS]
gpiopower:gpiopower-pwr{
rockchip,pin =
<0 RK_PD2 &pcfg_pull_up>;
};
};