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"
使能TP
mt@40 {
- status = "disabled";
+ status = "okay";
compatible = "firefly,gsl3680";
reg = <0x40>;
touch-gpio = <&gpio5 GPIO_B0 IRQ_TYPE_EDGE_RISING>;
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";
};
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>;
};
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>;
+ };
+ };
};
使能PWM1
&pwm1 {
- status = "disabled";
+ status = "okay";
};
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
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
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