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Firefly-RK3288 使用7.85寸EDP屏跑Ubuntu系统
发表于 2017-1-20 15:07:43
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本帖最后由 jpchen 于 2017-1-20 15:10 编辑
1.同步Firefly-RK3288 官方SDK到最新提交
Android 5.1 SDK
2.参考如下帖子修改内核 Firefly-RK3288 开发板 Android5.1 支持7.85寸液晶屏模组的修改方法
3.内核修改如下
1> 打开kernel/arch/arm/boot/dts/firefly-rk3288-linux.dts ,修改如下
包含LCD的dtsi:
- -#include "lcd-box.dtsi"
- +//#include "lcd-box.dtsi"
- #include <dt-bindings/input/input.h>
- +#include "lcd-LP079Qx1.dtsi"
复制代码 使能TP
- mt@40 {
- - status = "disabled";
- + status = "okay";
- compatible = "firefly,gsl3680";
- reg = <0x40>;
- touch-gpio = <&gpio5 GPIO_B0 IRQ_TYPE_EDGE_RISING>;
复制代码 关闭VGA
- vga_ddc@50 {
- compatible = "firefly,vga_ddc";
- reg = <0x50>;
- gpio-pwn = <&gpio0 GPIO_C1 GPIO_ACTIVE_HIGH>;
- rockchip,source = <0>; //0: LCDC0; 1: LCDC1
- rockchip,prop = <PRMRY>;//<EXTEND>
- - status = "okay";
- + status = "disabled";
- };
复制代码 打开logo
- &fb {
- rockchip,disp-mode = <DUAL>;
- - rockchip,uboot-logo-on = <0>;
- + rockchip,uboot-logo-on = <1>;
- rockchip,disp-policy = <DISPLAY_POLICY_BOX_TEMP>;
- };
复制代码 修改timing和屏修改引脚- &disp_timings {
- - native-mode = <&timing1>;
- + native-mode = <&timing0>;
- };
-
- &rk_screen {
- @@ -636,6 +637,15 @@
- status = "okay";
- rockchip,iommu-enabled = <1>;
- rockchip,prop = <PRMRY>;
- + power_ctr: power_ctr {
- + rockchip,debug = <1>;
- +
- + lcd_en:lcd_en {
- + rockchip,power_type = <GPIO>;
- + gpios = <&gpio0 GPIO_B5 GPIO_ACTIVE_HIGH>;
- + rockchip,delay = <10>;
- + };
- + };
- };
复制代码 使能PWM1- &pwm1 {
- - status = "disabled";
- + status = "okay";
- };
复制代码
2>打开kernel/arch/arm/boot/dts/rk3288.dtsi,修改如下 关闭CTR_GTCLKS
- rockchip,ctrbits = <
- (0
- |RKPM_CTR_PWR_DMNS
- - |RKPM_CTR_GTCLKS
- + // |RKPM_CTR_GTCLKS
- |RKPM_CTR_PLLS
复制代码
3>打开kernel/arch/arm/configs/firefly-rk3288-linux_defconfig配置TP,修改如下
- # CONFIG_TOUCHSCREEN_SYNAPTICS_DSX is not set
- +CONFIG_TOUCHSCREEN_GSLX680_MT70817V2=y
复制代码
4.编译内核
make firefly-rk3288-linux_defconfig
make firefly-rk3288-linux.img -j4
5.打包为boot.img文件
mkbootimg --kernel kernel.img --ramdisk initrd.img --second resource.img -o boot.img
可参考wiki 创建boot.img
6.烧录固件
固件包含loader parameter misc resouce boot linuxroot 文件
linuxroot根文件系统可参考《创建Ubuntu根文件系统 》
7.补丁和ubuntu固件
补丁:Ubuntu_LP079QX1_PATCH.zip
固件:RK3288_LP079QX1_Ubuntu14.04_201701200901.7z
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