1、板子是參考官方公版設計，SDK版本是RK3288_ANDROID8.1_SDK_20180512；
2、解壓SDK，直接執行source build.sh，再執行./mkimage.sh，燒錄進板子，發現系統正常啓動。
3、設備只有HDMI和LVDS，點LVDS屏，修改屏參，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 = <&rk808 1>;
clock-names = "ext_clock";
pinctrl-names = "default";
pinctrl-0 = <&wifi_enable_h>;
/*
* 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 = <&gpio4 28 GPIO_ACTIVE_LOW>;
};
wireless-bluetooth {
clocks = <&rk808 1>;
clock-names = "ext_clock";
};
/delete-node/ sdmmc-regulator;
vcc_lcd: vcc-lcd {
compatible = "regulator-fixed";
regulator-boot-on;
enable-active-high;
gpio = <&gpio7 3 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&lcd_en>;
regulator-name = "vcc_lcd";
vin-supply = <&vcc_io>;
};
};
&cpu0 {
cpu-supply = <&vdd_cpu>;
};
&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 = <&backlight>;
bus-format = <MEDIA_BUS_FMT_RGB888_1X24>;
power-supply = <&vcc_lcd>;
delay,disable = <10>;
enable-gpios = <&gpio7 4 GPIO_ACTIVE_HIGH>;
//rockchip,data-mapping = "jeida";
rockchip,data-mapping = "vesa";
rockchip,data-width = <24>;
rockchip,output = "duallvds";
display-timings {
native-mode = <&timing0>;
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 = <&vdd_gpu>;
};
&gmac {
max-speed = <1000>;
};
&hdmi_analog_sound {
status = "disabled";
};
&i2c0 {
clock-frequency = <400000>;
rk808: pmic@1b {
compatible = "rockchip,rk808";
reg = <0x1b>;
interrupt-parent = <&gpio0>;
interrupts = <4 IRQ_TYPE_LEVEL_LOW>;
pinctrl-names = "default";
pinctrl-0 = <&pmic_int &global_pwroff>;
rockchip,system-power-controller;
wakeup-source;
#clock-cells = <1>;
clock-output-names = "xin32k", "rk808-clkout2";
vcc1-supply = <&vcc_sys>;
vcc2-supply = <&vcc_sys>;
vcc3-supply = <&vcc_sys>;
vcc4-supply = <&vcc_sys>;
vcc6-supply = <&vcc_sys>;
vcc8-supply = <&vcc_io>;
vcc9-supply = <&vcc_io>;
vcc12-supply = <&vcc_io>;
vddio-supply = <&vccio_pmu>;
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 = <&gpio0 7 GPIO_ACTIVE_LOW>;
dc_det_gpio = <&gpio0 8 GPIO_ACTIVE_LOW>;
chg_ok_gpio = <&gpio0 9 GPIO_ACTIVE_HIGH>;
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 = <&mpu6050_irq_gpio>;
reg = <0x68>;
irq-gpio = <&gpio8 0 IRQ_TYPE_EDGE_RISING>;
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 = <&vcc_io>;
bb-supply = <&vcc_io>;
dvp-supply = <&vcc_io>;
flash0-supply = <&vcc_18>;
flash1-supply = <&vcc_io>;
gpio30-supply = <&vcc_io>;
gpio1830 = <&vcc_io>;
lcdc-supply = <&vcc_lcd>;
sdcard-supply = <&vccio_sd>;
wifi-supply = <&vcc_wl>;
};
&rockchip_suspend {
status = "okay";
rockchip,pwm-regulator-config = <
(0
| PWM1_REGULATOR_EN
)
>;
};
&pwm1 {
status = "okay";
pinctrl-names = "active";
pinctrl-0 = <&pwm1_pin_pull_down>;
};
&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、燒錄進去，完美點亮；
5、系統默認顯示中文；
alps\device\rockchip\rk3288\device.mk 添加以下代碼：
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、關閉節能模式
alps\frameworks\packages\SettingsProvider\res\values\defaults.xml
<bool name="def_dim_screen">false</bool>
8、設置屏幕永不休眠；
alps\frameworks\packages\SettingsProvider\res\values\defaults.xml
<integer name="def_screen_off_timeout">-1</integer>
<integer name="def_sleep_timeout">-1</integer>
發覺改動無效。。。。。。。
下班，下週繼續，查看源代碼。