一.調屏1.搭建 rk3288-evb-android-act8846-edp-avb.dtb \ （與使用的板子向匹配）2.背光使用pwm1控制backlight: backlight {compatible = "pwm-backlight";brightness-levels = <0 1 2 3 4 5 6 78 9 10 11 12 13 14 1516 17 18 19 20 21 22 2324 25 26 27 28 29 30 3132 33 34 35 36 37 38 3940 41 42 43 44 45 46 4748 49 50 51 52 53 54 5556 57 58 59 60 61 62 6364 65 66 67 68 69 70 7172 73 74 75 76 77 78 7980 81 82 83 84 85 86 8788 89 90 91 92 93 94 9596 97 98 99 100 101 102 103104 105 106 107 108 109 110 111112 113 114 115 116 117 118 119120 121 122 123 124 125 126 127128 129 130 131 132 133 134 135136 137 138 139 140 141 142 143144 145 146 147 148 149 150 151152 153 154 155 156 157 158 159160 161 162 163 164 165 166 167168 169 170 171 172 173 174 175176 177 178 179 180 181 182 183184 185 186 187 188 189 190 191192 193 194 195 196 197 198 199200 201 202 203 204 205 206 207208 209 210 211 212 213 214 215216 217 218 219 220 221 222 223224 225 226 227 228 229 230 231232 233 234 235 236 237 238 239240 241 242 243 244 245 246 247248 249 250 251 252 253 254 255>;default-brightness-level = <128>;//enable-gpios = <&gpio7 2 GPIO_ACTIVE_HIGH>;pinctrl-names = "default";//pinctrl-0 = <&bl_en>;pwms = <&pwm1 0 1000000 0>;};3. 配屏&lvds {status = "okay"; };&lvds_panel {compatible = "simple-panel";backlight = <&backlight>;bus-format = <MEDIA_BUS_FMT_RGB888_1X24>; enable-gpios = <&gpio1 RK_PD1 GPIO_ACTIVE_HIGH>;enable-delay-ms = <120>;rockchip,data-mapping = "vesa";rockchip,data-width = <24>;rockchip,output = "lvds";status = "okay";disp_timings: display-timings {native-mode = <&timing0>;timing0: timing0 {clock-frequency = <70000000>;hactive = <1280>;vactive = <800>;hback-porch = <100>;hfront-porch = <20>;vback-porch = <18>;vfront-porch = <8>;hsync-len = <10>;vsync-len = <2>;hsync-active = <0>;vsync-active = <0>;de-active = <0>;pixelclk-active = <0>;};}; };//顯示logo &route_lvds {status = "okay"; };4.上電時序&i2c0 { .... }5.發現logo并沒有顯示\sdk-9.0\u-boot\drivers\video\drm\inno_video_phy.c + // status & PLL_LOCK, 10000); + status & PLL_LOCK,1000000);6.旋轉屏幕\sdk-9.0\device\rockchip\rk3288\BoardConfig.mk# 0/90/180/270 SF_PRIMARY_DISPLAY_ORIENTATION := 07.調節像素密度 （圖像或按鍵太大，影響美觀，將其調小）sdk-9.0\device\rockchip\rk3288\device.mkPRODUCT_PROPERTY_OVERRIDES += \.....ro.sf.lcd_density=170 \.....7.觸摸同博文 觸摸驅動8.開機logo閃屏&dmc { + vop-dclk-mode = <1>;center-supply = <&vdd_log>;status = "okay"; }; 二、HDMI調試1.開機會自動識別分辨率，連接上4k顯示器，當其與屏的分辨率不一致時，會發生各種異常。設置開機默認頻率 \sdk-9.0\device\rockchip\rk3288\device.mk PRODUCT_PROPERTY_OVERRIDES += \vendor.hwc.device.primary=LVDS \vendor.hwc.device.extend=HDMI-A \persist.vendor.resolution.aux=1920x1080p60 三、音頻 1.make ARCH=arm menuconfig → Device Drivers → Sound card support → Advanced Linux Sound Architecture → ALSA for SoC audio support → CODEC drivers→ <*> Everest Semi ES8323 CODEC確保\sdk-9.0\kernel\arch\arm\configs\rockchip_defconfig 存在如下配置。CONFIG_SND_SOC_ES8323=yCONFIG_SND_SOC_HDMI_CODEC=y2. &i2c2 {status = "okay";es8323: es8323@10 {status = "okay";compatible = "everest,es8323";reg = <0x10>;spk-con-gpio = <&gpio7 RK_PB4 GPIO_ACTIVE_HIGH>; hp-det-gpio = <&gpio7 RK_PB1 GPIO_ACTIVE_HIGH>;clock-names = "mclk";clocks = <&cru SCLK_I2S0_OUT>; pinctrl-names = "default";pinctrl-0 = <&i2s0_mclk>;#sound-dai-cells = <0>; }; };3.修改dts文件相關音頻配置，使用es8323.4.配置驅動寄存器 （修改的部分）usleep_range(18000, 20000);snd_soc_write(codec, 0x02, 0xf3);snd_soc_write(codec, 0x2B, 0x80);snd_soc_write(codec, 0x08, 0x00); /* ES8388 salve */snd_soc_write(codec, 0x00, 0x32); //0x35snd_soc_write(codec, 0x01, 0x72); //0x50 /* PLAYBACK & RECORD Mode,EnRefr=1 */snd_soc_write(codec, 0x03, 0x59); /* pdn_ana=0,ibiasgen_pdn=0 */snd_soc_write(codec, 0x05, 0x00); /* pdn_ana=0,ibiasgen_pdn=0 */snd_soc_write(codec, 0x06, 0xc3); //0x00 /* pdn_ana=0,ibiasgen_pdn=0 */snd_soc_write(codec, 0x07, 0x7c);snd_soc_write(codec, 0x09, 0x88); /* ADC L/R PGA = +24dB */snd_soc_write(codec, 0x0a, 0xfa); //0xf0 /* ADC INPUT=LIN1/RIN1 */snd_soc_write(codec, 0x0b, 0x02); //0x82 /* ADC INPUT=LIN1/RIN1 */snd_soc_write(codec, 0x0C, 0x4c); /* I2S-24BIT */snd_soc_write(codec, 0x0d, 0x02); /* MCLK/LRCK=256 */snd_soc_write(codec, 0x10, 0x66); //0x00 /* ADC Left Volume=0db */snd_soc_write(codec, 0x11, 0x66); //0x00 /* ADC Right Volume=0db */snd_soc_write(codec, 0x12, 0xea); /* ALC stereo MAXGAIN: 35.5dB, MINGAIN: +6dB (Record Volume increased!) */snd_soc_write(codec, 0x13, 0xc0);snd_soc_write(codec, 0x14, 0x05);snd_soc_write(codec, 0x15, 0x06);snd_soc_write(codec, 0x16, 0x53);snd_soc_write(codec, 0x17, 0x18); /* I2S-16BIT */snd_soc_write(codec, 0x18, 0x02);snd_soc_write(codec, 0x1A, 0x00); //0x0A /* DAC VOLUME=0DB */snd_soc_write(codec, 0x1B, 0x00); //0x0Asnd_soc_write(codec, 0x26, 0x12); /* Left DAC TO Left IXER */snd_soc_write(codec, 0x27, 0xb8); /* Left DAC TO Left MIXER */snd_soc_write(codec, 0x28, 0x38);snd_soc_write(codec, 0x29, 0xb8); //0x38snd_soc_write(codec, 0x2A, 0xb8);snd_soc_write(codec, 0x02, 0x00); /* START DLL and state-machine,START DSM */snd_soc_write(codec, 0x19, 0x02); /* SOFT RAMP RATE=32LRCKS/STEP,Enable ZERO-CROSS CHECK,DAC MUTE */snd_soc_write(codec, 0x04, 0x0c); /* pdn_ana=0,ibiasgen_pdn=0 */usleep_range(18000, 20000);snd_soc_write(codec, 0x2e, 0x00);snd_soc_write(codec, 0x2f, 0x00);snd_soc_write(codec, 0x30, 0x08);snd_soc_write(codec, 0x31, 0x08);usleep_range(18000, 20000);snd_soc_write(codec, 0x30, 0x0f);snd_soc_write(codec, 0x31, 0x0f);usleep_range(18000, 20000);snd_soc_write(codec, 0x30, 0x18);snd_soc_write(codec, 0x31, 0x18);usleep_range(18000, 20000);snd_soc_write(codec, 0x04, 0x2c); /* pdn_ana=0,ibiasgen_pdn=0 */5.對于新手，調試音頻還是有一定的難度的，這是底層，上層的配置還有待研究。 6.camere&i2c3 {status = "okay";ov13850: ov13850@10 {compatible = "ovti,ov13850";status = "okay";reg = <0x10>;clocks = <&cru SCLK_VIP_OUT>;clock-names = "xvclk";reset-gpios = <&gpio7 0 GPIO_ACTIVE_HIGH>;pwdn-gpios = <&gpio8 8 GPIO_ACTIVE_HIGH>;rockchip,camera-module-index = <0>;rockchip,camera-module-facing = "back";rockchip,camera-module-name = "CMK-CT0116";rockchip,camera-module-lens-name = "Largan-50013A1";port {cam_out: endpoint {remote-endpoint = <&mipi_in_cam>;data-lanes = <1 2>;};};}; }; &mipi_phy_tx1rx1 {status = "okay";ports {#address-cells = <1>;#size-cells = <0>;port@0 {reg = <0>;#address-cells = <1>;#size-cells = <0>;mipi_in_cam: endpoint@1 {reg = <1>;remote-endpoint = <&cam_out>;data-lanes = <1 2>;};};port@1 {reg = <1>;#address-cells = <1>;#size-cells = <0>;mipi_sensor_input: endpoint@0 {reg = <0>;remote-endpoint = <&isp_mipi_in>;};};}; };&rkisp1 {status = "okay";pinctrl-names = "default";pinctrl-0 = <&isp_mipi>;port {#address-cells = <1>;#size-cells = <0>;isp_mipi_in: endpoint@0 {reg = <0>;remote-endpoint = <&mipi_sensor_input>;};}; };&isp {status = "disabled"; };\sdk-9.0\kernel\arch\arm\configs\rockchip_defconfigCONFIG_VIDEO_OV13850=y 7.SATA1.GPIO 驅動，供電和復位腳使用。2.dtsigpio_driver {compatible = "gpio_driver";sata_enable_gpio = <&gpio7 RK_PB7 GPIO_ACTIVE_HIGH>;sata_reset_gpio = <&gpio8 RK_PA7 GPIO_ACTIVE_HIGH>; }; 3.發現一個現象，插上sata后，時間變得不準確，外接電源還是有這個現象，logcat報錯，連接不上ntp,為什么會導致連接不上ntp還位置，我直接更改ntp地址。sdk-9.0\frameworks\base\core\res\res\values\config.xml + <!-- <string translatable="false" name="config_ntpServer">time.android.com</string> --> + <string translatable="false" name="config_ntpServer">2.android.pool.ntp.org</string> 8.4G and gps 同其他文件 9.聲卡（1）dtsi sound: sound {status = "okay";....}; hdmi_analog_sound: hdmi-analog-sound {....status = "disabled";};（2）命令調試1. 通過如下命令確認聲卡是否注冊成功# cat /proc/asound/cards 0 [rockchiprt5640c]: rockchip_rt5640 - rockchip,rt5640-codec rockchip,rt5640-codec# ls -l /dev/snd/ crw-rw---- system audio 116, 2 2013-01-18 08:51 controlC0 crw-rw---- system audio 116, 4 2013-01-18 08:51 pcmC0D0c crw-rw---- system audio 116, 3 2013-01-18 08:51 pcmC0D0p2. 通過命令行播放錄制調試聲卡：播放：# tinyplay Usage: tinyplay file.wav [-D card] [-d device] [-p period_size] [-n n_periods]# tinyplay /sdcard/test44.wav -D 0 -d 0 -p 1024 -n 3 Playing sample: 2 ch, 44100 hz, 32 bit錄制：# tinycap Usage: tinycap file.wav [-D card] [-d device] [-c channels] [-r rate] [-b bits] [-p period_size] [-n n_periods]# tinycap /sdcard/rec.wav -D 0 -d 0 –c 2 –r 44100 –b 16 –p 1024 –n 3（3）如果HDMI有聲音輸出且聲音正常，說明kernel沒有問題，否則反之。但打開APP卻沒有聲音輸出，則需要調試應用層。（問題因人而異）（4）耳機錄音不生效，就是插入耳機的時候，沒有進行耳機與麥克風的切換。后來發現是中斷的問題：// #define IRQ_TYPE_EDGE_BOTH (IRQ_TYPE_EDGE_FALLING | IRQ_TYPE_EDGE_RISING)//雙邊沿觸發 // #define IRQ_TYPE_LEVEL_LOW 8//低電平觸發 if (hp_irq) { ret = devm_request_threaded_irq(&i2c->dev, hp_irq, NULL, hp_det_irq_handler,IRQ_TYPE_LEVEL_LOW | IRQF_ONESHOT,"ES8323", NULL);.....} 驅動選擇的是雙邊沿觸發，但這里雙邊沿觸發并沒有生效，所以改成下邊沿觸發。（5）發現耳機錄音有背景噪音，通過調試ADC得到徹底的解決，于是通過降低增益減少噪音的干擾，后續待解決。 10.有時進深度休眠無法喚醒http://www.cnblogs.com/lialong1st/

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