1、板子是参考官方公版设计，SDK版本是RK3288_ANDROID8.1_SDK_20180512；

2、解压SDK，直接执行source build.sh，再执行./mkimage.sh，烧录进板子，发现系统正常启动。

3、设备只有HDMI和LVDS，点LVDS屏，修改屏参，修改文件rk3288-evb-android-rk808-edp.dts；

/dts-v1/;

#include "rk3288-evb.dtsi"

#include "rk3288-android.dtsi"

/ {

compatible = "rockchip,rk3288-evb-android-rk808-edp", "rockchip,rk3288";

sdio_pwrseq: sdio-pwrseq {

compatible = "mmc-pwrseq-simple";

clocks = ;

clock-names = "ext_clock";

pinctrl-names = "default";

pinctrl-0 = ;

/*

* On the module itself this is one of these (depending

* on the actual card populated):

* - SDIO_RESET_L_WL_REG_ON

* - PDN (power down when low)

*/

reset-gpios = ;

};

wireless-bluetooth {

clocks = ;

clock-names = "ext_clock";

};

/delete-node/ sdmmc-regulator;

vcc_lcd: vcc-lcd {

compatible = "regulator-fixed";

regulator-boot-on;

enable-active-high;

gpio = ;

pinctrl-names = "default";

pinctrl-0 = ;

regulator-name = "vcc_lcd";

vin-supply = ;

};

};

&cpu0 {

cpu-supply = ;

};

&cif_isp0 {

status = "okay";

};

&dfi {

status = "okay";

};

&lvds_in_vopl {

status = "okay";

};

&lvds_in_vopb {

status = "disabled";

};

&route_lvds {

status = "okay";

};

&lvds {

status = "okay";

};

&lvds_panel {

status = "okay";

compatible ="simple-panel";

backlight = ;

bus-format = ;

power-supply = ;

delay,disable = <10>;

enable-gpios = ;

//rockchip,data-mapping = "jeida";

rockchip,data-mapping = "vesa";

rockchip,data-width = <24>;

rockchip,output = "duallvds";

display-timings {

native-mode = ;

timing0: timing0 {

clock-frequency = <148000000>;

hactive = <1920>; /* Horizontal display area thd 1024 DCLK */

vactive = <1080>; /* Vertical display area tvd 600 H */

hback-porch = <48>; /* HS Width +Back Porch 160 160 160 DCLK (Thw+ thbp)*/

hfront-porch = <60>; /* HS front porch thfp 16 160 216 DCLK */

vback-porch = <8>; /* VS front porch tvfp 1 12 127 H */

vfront-porch = <33>; /* VS Width+Back Porch 23 23 23 H (Tvw+ tvbp) */

hsync-len = <32>; /* HS Pulse Width thw 1 - 140 DCLK */

vsync-len = <4>; /* VS Pulse Width tvw 1 - 20 H */

hsync-active = <0>;

vsync-active = <0>;

de-active = <0>;

pixelclk-active = <0>;

};

};

};

&gpu {

status = "okay";

mali-supply = ;

};

&gmac {

max-speed = <1000>;

};

&hdmi_analog_sound {

status = "disabled";

};

&i2c0 {

clock-frequency = <400000>;

rk808: pmic@1b {

compatible = "rockchip,rk808";

reg = <0x1b>;

interrupt-parent = ;

interrupts = <4 IRQ_TYPE_LEVEL_LOW>;

pinctrl-names = "default";

pinctrl-0 = ;

rockchip,system-power-controller;

wakeup-source;

#clock-cells = <1>;

clock-output-names = "xin32k", "rk808-clkout2";

vcc1-supply = ;

vcc2-supply = ;

vcc3-supply = ;

vcc4-supply = ;

vcc6-supply = ;

vcc8-supply = ;

vcc9-supply = ;

vcc12-supply = ;

vddio-supply = ;

regulators {

vdd_cpu: DCDC_REG1 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <750000>;

regulator-max-microvolt = <1400000>;

regulator-name = "vdd_arm";

regulator-state-mem {

regulator-off-in-suspend;

};

};

vdd_gpu: DCDC_REG2 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <850000>;

regulator-max-microvolt = <1250000>;

regulator-name = "vdd_gpu";

regulator-ramp-delay = <6000>;

regulator-state-mem {

regulator-off-in-suspend;

};

};

vcc_ddr: DCDC_REG3 {

regulator-always-on;

regulator-boot-on;

regulator-name = "vcc_ddr";

regulator-state-mem {

regulator-on-in-suspend;

};

};

vcc_io: DCDC_REG4 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <3300000>;

regulator-max-microvolt = <3300000>;

regulator-name = "vcc_io";

regulator-state-mem {

regulator-on-in-suspend;

regulator-suspend-microvolt = <3300000>;

};

};

vcc_tp: LDO_REG1 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <3300000>;

regulator-max-microvolt = <3300000>;

regulator-name = "vcc_tp";

regulator-state-mem {

regulator-off-in-suspend;

};

};

vcca_codec: LDO_REG2 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <3300000>;

regulator-max-microvolt = <3300000>;

regulator-name = "vcca_codec";

regulator-state-mem {

regulator-on-in-suspend;

regulator-suspend-microvolt = <3300000>;

};

};

vdd_10: LDO_REG3 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <1000000>;

regulator-max-microvolt = <1000000>;

regulator-name = "vdd_10";

regulator-state-mem {

regulator-on-in-suspend;

regulator-suspend-microvolt = <1000000>;

};

};

vcc_wl: LDO_REG4 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <1800000>;

regulator-max-microvolt = <1800000>;

regulator-name = "vcc_wl";

regulator-state-mem {

regulator-on-in-suspend;

};

};

vccio_sd: LDO_REG5 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <1800000>;

regulator-max-microvolt = <3300000>;

regulator-name = "vccio_sd";

regulator-state-mem {

regulator-off-in-suspend;

};

};

vdd10_lcd: LDO_REG6 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <1000000>;

regulator-max-microvolt = <1000000>;

regulator-name = "vdd10_lcd";

regulator-state-mem {

regulator-off-in-suspend;

};

};

vcc_18: LDO_REG7 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <1800000>;

regulator-max-microvolt = <1800000>;

regulator-name = "vcc_18";

regulator-state-mem {

regulator-on-in-suspend;

regulator-suspend-microvolt = <1800000>;

};

};

vcc18_lcd: LDO_REG8 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <1800000>;

regulator-max-microvolt = <1800000>;

regulator-name = "vcc18_lcd";

regulator-state-mem {

regulator-off-in-suspend;

};

};

vcc_sd: SWITCH_REG1 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <3300000>;

regulator-max-microvolt = <3300000>;

regulator-name = "vcc_sd";

regulator-state-mem {

regulator-off-in-suspend;

};

};

vccio_pmu: SWITCH_REG2 {

regulator-always-on;

regulator-boot-on;

regulator-min-microvolt = <3300000>;

regulator-max-microvolt = <3300000>;

regulator-name = "vccio_pmu";

regulator-state-mem {

regulator-off-in-suspend;

};

};

};

};

CW2015@62 {

compatible = "cw201x";

reg = <0x62>;

bat_low_gpio = ;

dc_det_gpio = ;

chg_ok_gpio = ;

bat_config_info = <0x15 0x42 0x60 0x59 0x52 0x58 0x4D 0x48 0x48 0x44 0x44 0x46 0x49 0x48 0x32

0x24 0x20 0x17 0x13 0x0F 0x19 0x3E 0x51 0x45 0x08 0x76 0x0B 0x85 0x0E 0x1C 0x2E 0x3E 0x4D 0x52 0x52

0x57 0x3D 0x1B 0x6A 0x2D 0x25 0x43 0x52 0x87 0x8F 0x91 0x94 0x52 0x82 0x8C 0x92 0x96 0xFF 0x7B 0xBB

0xCB 0x2F 0x7D 0x72 0xA5 0xB5 0xC1 0x46 0xAE>;

is_dc_charge = <1>;

is_usb_charge = <0>;

monitor_sec = <5>;

virtual_power = <0>;

divider_res1 = <200>;

divider_res2 = <200>;

};

};

&i2c1 {

status = "okay";

clock-frequency = <400000>;

mpu6050@68 {

compatible = "invensense,mpu6050";

status = "okay";

pinctrl-names = "default";

pinctrl-0 = ;

reg = <0x68>;

irq-gpio = ;

mpu-int_config = <0x10>;

mpu-level_shifter = <0>;

mpu-orientation = <0 1 0 1 0 0 0 0 1>;

orientation-x= <0>;

orientation-y= <0>;

orientation-z= <1>;

support-hw-poweroff = <0>;

mpu-debug = <1>;

};

ak8963:compass@0d{

compatible = "mpu_ak8963";

reg = <0x0d>;

compass-bus = <0>;

compass-adapt_num = <0>;

compass-orientation = <1 0 0 0 1 0 0 0 1>;

orientation-x= <0>;

orientation-y= <0>;

orientation-z= <1>;

compass-debug = <1>;

status = "okay";

};

};

&io_domains {

status = "okay";

audio-supply = ;

bb-supply = ;

dvp-supply = ;

flash0-supply = ;

flash1-supply = ;

gpio30-supply = ;

gpio1830 = ;

lcdc-supply = ;

sdcard-supply = ;

wifi-supply = ;

};

&rockchip_suspend {

status = "okay";

rockchip,pwm-regulator-config = <

(0

| PWM1_REGULATOR_EN

)

>;

};

&pwm1 {

status = "okay";

pinctrl-names = "active";

pinctrl-0 = ;

};

&pinctrl {

lcd {

lcd_en: lcd-en {

rockchip,pins = <7 3 RK_FUNC_GPIO &pcfg_pull_none>;

};

};

mpu6050 {

mpu6050_irq_gpio: mpu6050-irq-gpio {

rockchip,pins = <8 0 RK_FUNC_GPIO &pcfg_pull_none>;

};

};

};

4、烧录进去，完美点亮；

5、系统默认显示中文；

alps\device\rockchip\rk3288\device.mk 添加以下代码：

PRODUCT_PROPERTY_OVERRIDES += \

persist.sys.timezone=Asia/Shanghai\

persist.sys.language=zh\

persist.sys.country=CN\

6、修改屏幕密度

ro.sf.lcd_density=160

7、关闭节能模式

alps\frameworks\packages\SettingsProvider\res\values\defaults.xml

false

8、设置屏幕永不休眠；

alps\frameworks\packages\SettingsProvider\res\values\defaults.xml

-1

-1

发觉改动无效。。。。。。。

下班，下周继续，查看源代码。