botelv的专栏

RK开机动画主要是在uboot中进行动画播放，因此要同时配置dts以及uboot的config，以下以3288 7.1为参考，其他系统版本大同小异a/include/configs/rk32plat.h+++ b/include/configs/rk32plat.h@@ -381,7 +381,7 @@#define CONFIG_RK3399_EDP#endif-#undef CONFIG_UBOOT_CHARGE+#define CONFIG_UBOOT_CHARGE...

3288最强功能之一就是双屏异显，7.1以上不需要打补丁，RK已经把补丁打好，只需要配置dts以及build.prop变量即可。1.配置dts支持mipi+edp双屏显示：首先是mipi的dts配置&dsi0 { status = "okay"; //rockchip,lane-rate = <400>; panel: panel { compatible = "simple-panel-dsi"; reg = &lt...

/* hshcal001_i2c.c** Humidity device driver for I2C (HSHCAL001)** Copyright (C) 2012 ALPS ELECTRIC CO., LTD. All Rights Reserved.** This software is licensed under the terms of the GNU General Public* License version 2, as published by the Fr...

RK有些屏开机的过程，会闪几次，是由于变频导致的，配置如下，可以解决，但是只能解决部分屏，有些屏无法解决：--- a/arch/arm/boot/dts/rk3288-android.dtsi+++ b/arch/arm/boot/dts/rk3288-android.dtsi@@ -99,7 +99,7 @@ upthreshold = <55>; downdifferential = <10>; ...

RK提供的常规的mipi指令，比如0x15 0x39 等等，但是SDK本身不支持0x32命令，需要加入以下补丁：rk3126补丁如下：kenel使用：diff --git a/drivers/video/rockchip/screen/lcd_mipi.c b/drivers/video/rockchip/screen/lcd_mipi.cindex 8eeef57..eba303d6 100755--- a/drivers/video/rockchip/screen/lcd_mipi.c.