[RK3399] + [Android 9.0] MIPI屏

[RK3399] + [Android 9.0] MIPI屏

  • MIPI接口

  • 背光控制电路

  • 设备树

    • 背光PWM结点

    • dsi

    • 屏参

    • 通道和LOGO

  • 驱动部分

平台 安卓 内核版本
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 = <MIPI_DSI_FMT_RGB888>;
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
];

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

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