[问答]

如何去实现RK3399+Android9.0的MIPI屏设计呢

问答对人有帮助，内容完整，我也想知道答案 0 如何去实现RK3399+Android9.0的MIPI屏设计呢？有哪些设计步骤？ 0
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[RK3399] + [Android 9.0] MIPI屏

[tr]平台安卓内核版本[/tr]

RK3399

Android 9.0

Linux4.4

MIPI接口

背光控制电路

设备树

背光PWM结点

backlight: backlight {
            status = "okay";
            enable-gpios = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;
            compatible = "pwm-backlight";
            pwms = <&pwm0 0 20000 1>;
            brightness-levels = <
                        0 1 2 3 4 5 6 7
                        8 9  10  11  12  13  14  15
                     ...
                     232 233 234 235 236 237 238 239
                     240 241 242 243 244 245 246 247
                     248 249 250 251 252 253 254 255>;
            default-brightness-level = <200>;
      };

dsi

&dsi {
      status = "okay";
      //rockchip,lane-rate = <1000>;
      dsi_panel: panel@0 {
            status = "okay";
            compatible = "simple-panel-dsi";
            reg = <0>;
            backlight = <&backlight>;
            power-supply = <&vcc3v3_s0>;
            //reset-gpios = <&gpio1 RK_PB1 GPIO_ACTIVE_LOW>;
            //enable-gpios = <&gpio1 RK_PB5 GPIO_ACTIVE_HIGH>;
            pinctrl-names = "default";
            pinctrl-0 = <&lcd_rst_gpio>;
            reset-delay-ms = <40>;
            enable-delay-ms = <40>;
            prepare-delay-ms = <40>;
            unprepare-delay-ms = <40>;
            disable-delay-ms = <40>;
            dsi,flags = <(MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
                           MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET)>;
            dsi,format = ;
            dsi,lanes  = <4>;

            panel-init-sequence = [
                     39 00 04 FF 98 81 03
                     15 00 02 01 00
                     15 00 02 02 00
                     15 00 02 03 53
                     15 00 02 04 53
                     15 00 02 05 13
                     15 00 02 06 04
                     15 00 02 07 02
                     15 00 02 08 02
                     15 00 02 09 00
                     15 00 02 0a 00
                     15 00 02 0b 00
                     15 00 02 0c 00
                     15 00 02 0d 00
                     15 00 02 0e 00
                     15 00 02 0f 00
                     15 00 02 10 00
                     15 00 02 11 00
                     15 00 02 12 00
                     15 00 02 13 00
                     15 00 02 14 00
                     15 00 02 15 00
                     15 00 02 16 00
                     15 00 02 17 00
                     15 00 02 18 00
                     15 00 02 19 00
                     15 00 02 1a 00
                     15 00 02 1b 00
                     15 00 02 1c 00
                     15 00 02 1d 00
                     15 00 02 1e c0
                     15 00 02 1f 80
                     15 00 02 20 02
                     15 00 02 21 09
                     15 00 02 22 00
                     15 00 02 23 00
                     15 00 02 24 00
                     15 00 02 25 00
                     15 00 02 26 00
                     15 00 02 27 00
                     15 00 02 28 55
                     15 00 02 29 03
                     15 00 02 2a 00
                     15 00 02 2b 00
                     15 00 02 2c 00
                     15 00 02 2d 00
                     15 00 02 2e 00
                     15 00 02 2f 00
                     15 00 02 30 00
                     15 00 02 31 00
                     15 00 02 32 00
                     15 00 02 33 00
                     15 00 02 34 00
                     15 00 02 35 00
                     15 00 02 36 00
                     15 00 02 37 00
                     15 00 02 38 3C
                     15 00 02 39 00
                     15 00 02 3a 00
                     15 00 02 3b 00
                     15 00 02 3c 00
                     15 00 02 3d 00
                     15 00 02 3e 00
                     15 00 02 3f 00
                     15 00 02 40 00
                     15 00 02 41 00
                     15 00 02 42 00
                     15 00 02 43 00
                     15 00 02 44 00
                     15 00 02 50 01
                     15 00 02 51 23
                     15 00 02 52 45
                     15 00 02 53 67
                     15 00 02 54 89
                     15 00 02 55 ab
                     15 00 02 56 01
                     15 00 02 57 23
                     15 00 02 58 45
                     15 00 02 59 67
                     15 00 02 5a 89
                     15 00 02 5b ab
                     15 00 02 5c cd
                     15 00 02 5d ef
                     15 00 02 5e 01
                     15 00 02 5f 08
                     15 00 02 60 02
                     15 00 02 61 02
                     15 00 02 62 0A
                     15 00 02 63 15
                     15 00 02 64 14
                     15 00 02 65 02
                     15 00 02 66 11
                     15 00 02 67 10
                     15 00 02 68 02
                     15 00 02 69 0F
                     15 00 02 6a 0E
                     15 00 02 6b 02
                     15 00 02 6c 0D
                     15 00 02 6d 0C
                     15 00 02 6e 06
                     15 00 02 6f 02
                     15 00 02 70 02
                     15 00 02 71 02
                     15 00 02 72 02
                     15 00 02 73 02
                     15 00 02 74 02
                     15 00 02 75 06
                     15 00 02 76 02
                     15 00 02 77 02
                     15 00 02 78 0A
                     15 00 02 79 15
                     15 00 02 7a 14
                     15 00 02 7b 02
                     15 00 02 7c 10
                     15 00 02 7d 11
                     15 00 02 7e 02
                     15 00 02 7f 0C
                     15 00 02 80 0D
                     15 00 02 81 02
                     15 00 02 82 0E
                     15 00 02 83 0F
                     15 00 02 84 08
                     15 00 02 85 02
                     15 00 02 86 02
                     15 00 02 87 02
                     15 00 02 88 02
                     15 00 02 89 02
                     15 00 02 8A 02
                     39 00 04 FF 98 81 04
                     15 00 02 6C 15
                     15 00 02 6E 30
                     15 00 02 6F 33
                     15 00 02 8D 1F
                     15 00 02 87 BA
                     15 00 02 26 76
                     15 00 02 B2 D1
                     15 00 02 35 1F
                     15 00 02 33 14
                     15 00 02 3A A9
                     15 00 02 3B 98
                     15 00 02 38 01
                     15 00 02 39 00
                     39 00 04 FF 98 81 01
                     15 00 02 22 09
                     15 00 02 31 00
                     15 00 02 50 D8
                     15 00 02 51 D3
                     15 00 02 53 47
                     15 00 02 55 7A
                     15 00 02 60 28
                     15 00 02 2E C8
                     15 00 02 A0 07
                     15 00 02 A1 17
                     15 00 02 A2 25
                     15 00 02 A3 15
                     15 00 02 A4 14
                     15 00 02 A5 29
                     15 00 02 A6 1C
                     15 00 02 A7 1F
                     15 00 02 A8 7A
                     15 00 02 A9 1A
                     15 00 02 AA 25
                     15 00 02 AB 67
                     15 00 02 AC 18
                     15 00 02 AD 1A
                     15 00 02 AE 4C
                     15 00 02 AF 22
                     15 00 02 B0 29
                     15 00 02 B1 50
                     15 00 02 B2 5F
                     15 00 02 B3 21
                     15 00 02 C0 07
                     15 00 02 C1 17
                     15 00 02 C2 25
                     15 00 02 C3 15
                     15 00 02 C4 14
                     15 00 02 C5 29
                     15 00 02 C6 1C
                     15 00 02 C7 1F
                     15 00 02 C8 7A
                     15 00 02 C9 1A
                     15 00 02 CA 25
                     15 00 02 CB 67
                     15 00 02 CC 18
                     15 00 02 CD 1A
                     15 00 02 CE 4C
                     15 00 02 CF 22
                     15 00 02 D0 29
                     15 00 02 D1 50
                     15 00 02 D2 5F
                     15 00 02 D3 3D
                     39 00 04 FF 98 81 00
                     15 00 02 35 00
                     15 00 02 36 03
                     05 78 01 11
                     05 FF 01 29

2022-3-7 16:38:18 评论

王焕树

答案对人有帮助，有参考价值 0 ]; disp_timings: display-timings { native-mode = <&timing0>; timing0: timing0 { clock-frequency = <66770000>; hactive = <800>; vactive = <1280>; hfront-porch = <16>; hback-porch = <48>; hsync-len = <16>; vfront-porch = <8>; vback-porch = <4>; vsync-len = <4>; hsync-active = <0>; vsync-active = <0>; de-active = <0>; pixelclk-active = <0>; }; }; }; }; 屏参 disp_timings: display-timings { native-mode = <&timing0>; timing0: timing0 { clock-frequency = <66770000>; hactive = <800>; vactive = <1280>; hfront-porch = <16>; hback-porch = <48>; hsync-len = <16>; vfront-porch = <8>; vback-porch = <4>; vsync-len = <4>; hsync-active = <0>; vsync-active = <0>; de-active = <0>; pixelclk-active = <0>; }; }; 通道和LOGO logo图片位于kernel目录下图片格式为位图有两张logo &dsi_in_vopb{ status = "okay"; }; &dsi_in_vopl { status = "disabled"; }; &route_dsi { status = "okay"; }; 驱动部分驱动部分没有修改,采用默认的通用屏。

2022-3-7 16:38:22 评论举报王倩