高通8x12平台 mipi屏 调试

1. 一些描述

8x12平台和8x25平台的代码结构上还是有一些不同的，8x12平台的屏和TP都是通过 .dtsi文件管理的，QRD8X12_1935/bootable/bootloader/lk/dev/gcdb/display/include/

panel_hx8379a_wvga_video.h

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/*---------------------------------------------------------------------------

* This file is autogenerated file using gcdb parser. Please do not edit it.

* Update input XML file to add a new entry or update variable in this file

* VERSION = "1.0"

*---------------------------------------------------------------------------*/

#ifndef _PANEL_HX8379A_WVGA_VIDEO_H_

#define _PANEL_HX8379A_WVGA_VIDEO_H_

/*---------------------------------------------------------------------------*/

/* HEADER files */

/*---------------------------------------------------------------------------*/

#include "panel.h"

/*---------------------------------------------------------------------------*/

/* Panel configuration */

/*---------------------------------------------------------------------------*/

static struct panel_config hx8379a_wvga_video_panel_data = {

"qcom,mdss_dsi_hx8379a_wvga_video", "dsi:0:", "qcom,mdss-dsi-panel",

10, 0, "DISPLAY_1", 0, 0, 60, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

};

/*---------------------------------------------------------------------------*/

/* Panel resolution */

/*---------------------------------------------------------------------------*/

static struct panel_resolution hx8379a_wvga_video_panel_res = {

480, 800, 100, 94, 40, 0, 6, 4, 6, 0, 0, 0, 0, 0, 0, 0, 0, 0

};

/*---------------------------------------------------------------------------*/

/* Panel color information */

/*---------------------------------------------------------------------------*/

static struct color_info hx8379a_wvga_video_color = {

24, 0, 0xff, 0, 0, 0

};

/*---------------------------------------------------------------------------*/

/* Panel on/off command information */

/*---------------------------------------------------------------------------*/

static char hx8379a_wvga_video_on_cmd0[] = {

0x04, 0x00, 0x39, 0xC0,

0xB9, 0xFF, 0x83, 0x79,

};

static char hx8379a_wvga_video_on_cmd1[] = {

0x03, 0x00, 0x39, 0xC0,

0xBA, 0x51, 0x93, 0xFF,

};

static char hx8379a_wvga_video_on_cmd2[] = {

0x14, 0x00, 0x39, 0xC0,

0xB1, 0x00, 0x50, 0x44,

0xEA, 0x8D, 0x08, 0x11,

0x11, 0x11, 0x27, 0x2F,

0x9A, 0x1A, 0x42, 0x0B,

0x6E, 0xF1, 0x00, 0xE6,

};

static char hx8379a_wvga_video_on_cmd3[] = {

0x0E, 0x00, 0x39, 0xC0,

0xB2, 0x00, 0x00, 0x3C,

0x08, 0x04, 0x19, 0x22,

0x00, 0xFF, 0x08, 0x04,

0x19, 0x20, 0xFF, 0xFF,

};

static char hx8379a_wvga_video_on_cmd4[] = {

0x20, 0x00, 0x39, 0xC0,

0xB4, 0x80, 0x08, 0x00,

0x32, 0x10, 0x03, 0x32,

0x13, 0x70, 0x32, 0x10,

0x08, 0x37, 0x01, 0x28,

0x07, 0x37, 0x08, 0x35,

0x08, 0x3D, 0x44, 0x08,

0x00, 0x40, 0x08, 0x28,

0x08, 0x30, 0x30, 0x04,

};

static char hx8379a_wvga_video_on_cmd5[] = {

0x30, 0x00, 0x39, 0xC0,

0xD5, 0x00, 0x00, 0x0A,

0x00, 0x01, 0x05, 0x00,

0x03, 0x00, 0x88, 0x88,

0x88, 0x88, 0x23, 0x01,

0x67, 0x45, 0x02, 0x13,

0x88, 0x88, 0x88, 0x88,

0x88, 0x88, 0x88, 0x88,

0x88, 0x88, 0x54, 0x76,

0x10, 0x32, 0x31, 0x20,

0x88, 0x88, 0x88, 0x88,

0x88, 0x88, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00,

};

static char hx8379a_wvga_video_on_cmd6[] = {

0x24, 0x00, 0x39, 0xC0,

0xE0, 0x79, 0x05, 0x0F,

0x14, 0x23, 0x24, 0x3F,

0x30, 0x46, 0x06, 0x10,

0x13, 0x16, 0x17, 0x16,

0x16, 0x13, 0x18, 0x05,

0x0F, 0x14, 0x23, 0x24,

0x3F, 0x30, 0x46, 0x06,

0x10, 0x13, 0x16, 0x17,

0x16, 0x16, 0x13, 0x18,

};

static char hx8379a_wvga_video_on_cmd7[] = {

0x80, 0x00, 0x39, 0xC0,

0xC1, 0x01, 0x00, 0x07,

0x10, 0x17, 0x1D, 0x2A,

0x33, 0x3A, 0x43, 0x4A,

0x52, 0x5B, 0x64, 0x6D,

0x78, 0x7F, 0x88, 0x90,

0x98, 0xA0, 0xA9, 0xB2,

0xB9, 0xC1, 0xC9, 0xD1,

0xD7, 0xDF, 0xE6, 0xED,

0xF4, 0xFA, 0xFD, 0x00,

0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00,

0x00, 0x08, 0x10, 0x18,

0x20, 0x28, 0x30, 0x38,

0x40, 0x47, 0x4F, 0x58,

0x60, 0x68, 0x70, 0x78,

0x80, 0x88, 0x90, 0x98,

0xA0, 0xA9, 0xB1, 0xB9,

0xC1, 0xC9, 0xD1, 0xD8,

0xE0, 0xE8, 0xF0, 0xF9,

0xFE, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x08,

0x10, 0x18, 0x1E, 0x26,

0x2E, 0x34, 0x3A, 0x41,

0x49, 0x4F, 0x58, 0x5E,

0x67, 0x6F, 0x77, 0x80,

0x88, 0x8F, 0x97, 0x9F,

0xA7, 0xAF, 0xB8, 0xBF,

0xC7, 0xD1, 0xD8, 0xE3,

0xEA, 0xF6, 0xFF, 0x00,

0x00, 0x00, 0x00, 0x00,

0x00, 0x00, 0x00, 0x00,

};

static char hx8379a_wvga_video_on_cmd8[] = {

0xcc, 0x02, 0x23, 0x80

};

static char hx8379a_wvga_video_on_cmd9[] = {

0x05, 0x00, 0x39, 0xC0,

0xB6, 0x00, 0x9C, 0x00,

0x9C, 0xFF, 0xFF, 0xFF,

};

static char hx8379a_wvga_video_on_cmd10[] = {

0x11, 0x00, 0x05, 0x80

};

static char hx8379a_wvga_video_on_cmd11[] = {

0x29, 0x00, 0x05, 0x80

};

static struct mipi_dsi_cmd hx8379a_wvga_video_on_command[] = {

{0x8, hx8379a_wvga_video_on_cmd0, 0x00},

{0x8, hx8379a_wvga_video_on_cmd1, 0x00},

{0x18, hx8379a_wvga_video_on_cmd2, 0x00},

{0x14, hx8379a_wvga_video_on_cmd3, 0x00},

{0x24, hx8379a_wvga_video_on_cmd4, 0x00},

{0x34, hx8379a_wvga_video_on_cmd5, 0x00},

{0x28, hx8379a_wvga_video_on_cmd6, 0x00},

{0x84, hx8379a_wvga_video_on_cmd7, 0x00},

{0x4, hx8379a_wvga_video_on_cmd8, 0x00},

{0xc, hx8379a_wvga_video_on_cmd9, 0x00},

{0x4, hx8379a_wvga_video_on_cmd10, 0x96},

{0x4, hx8379a_wvga_video_on_cmd11, 0x78}

};

#define HX8379A_WVGA_VIDEO_ON_COMMAND 12

static char hx8379a_wvga_videooff_cmd0[] = {

0x28, 0x00, 0x05, 0x80

};

static char hx8379a_wvga_videooff_cmd1[] = {

0x10, 0x00, 0x05, 0x80

};

static struct mipi_dsi_cmd hx8379a_wvga_video_off_command[] = {

{0x4, hx8379a_wvga_videooff_cmd0, 0x32},

{0x4, hx8379a_wvga_videooff_cmd1, 0x78}

};

#define HX8379A_WVGA_VIDEO_OFF_COMMAND 2

static struct command_state hx8379a_wvga_video_state = {

0, 0

};

/*---------------------------------------------------------------------------*/

/* Command mode panel information */

/*---------------------------------------------------------------------------*/

static struct commandpanel_info hx8379a_wvga_video_command_panel = {

0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

};

/*---------------------------------------------------------------------------*/

/* Video mode panel information */

/*---------------------------------------------------------------------------*/

static struct videopanel_info hx8379a_wvga_video_video_panel = {

1, 0, 0, 0, 1, 1, 2, 0, 0x9

};

/*---------------------------------------------------------------------------*/

/* Lane configuration */

/*---------------------------------------------------------------------------*/

static struct lane_configuration hx8379a_wvga_video_lane_config = {

2, 1, 1, 1, 0, 0

};

/*---------------------------------------------------------------------------*/

/* Panel timing */

/*---------------------------------------------------------------------------*/

static const uint32_t hx8379a_wvga_video_timings[] = {

0x78, 0x1B, 0x11, 0x00, 0x3E, 0x43, 0x16, 0x1E, 0x1D, 0x03, 0x04, 0x00

};

static struct panel_timing hx8379a_wvga_video_timing_info = {

0, 4, 0x04, 0x1b

};

/*---------------------------------------------------------------------------*/

/* Panel reset sequence */

/*---------------------------------------------------------------------------*/

static struct panel_reset_sequence hx8379a_wvga_video_reset_seq = {

{2, 0, 2, }, {20, 2, 20, }, 2

};

/*---------------------------------------------------------------------------*/

/* Backlight setting */

/*---------------------------------------------------------------------------*/

static struct backlight hx8379a_wvga_video_backlight = {

0, 1, 255, 0, 1, 0

};

#endif /*_PANEL_HX8379A_WVGA_VIDEO_H_*/

参数的具体设置根据的屏而定，现在准备添加一块屏：

1. 上面的 .h文件是第一个需要更改的地方，比较重要的几个参数：lane_config, video_timings, video_command的格式，这些地方如果出错可能导致屏不亮

2. 第二个需要修改的地方是QRD8X12_1935/bootable/bootloader/lk/target/msm8610/oem_panel.c,之前的8x25平台应该是没有这个文件的，这个文件会调用上面写好的 .h文件，按照里面的格式添加一块新屏，需要注意的地方是，看你的平台走的什么版本（QCT QRD）等，因为默认加载的屏也是不同的（可以通过打log看看是什么版本的）

3. 第三个需要更改的地方是 QRD8X12_1935/kernel/arch/arm/boot/dts/dsi-panel-hx8379a-wvga-video.dtsi 这个文件里面的参数跟上边的.h文件内参数是对应的

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/*---------------------------------------------------------------------------

* This file is autogenerated file using gcdb parser. Please do not edit it.

* Update input XML file to add a new entry or update variable in this file

* VERSION = "1.0"

*---------------------------------------------------------------------------*/

&mdss_mdp {

dsi_hx8379a_wvga_vid: qcom,mdss_dsi_hx8379a_wvga_video {

qcom,mdss-dsi-panel-name = "HX8379A wvga video mode dsi panel";

qcom,mdss-dsi-panel-controller = <&mdss_dsi0>;

qcom,mdss-dsi-panel-type = "dsi_video_mode";

qcom,mdss-dsi-panel-destination = "display_1";

qcom,mdss-dsi-panel-framerate = <60>;

qcom,mdss-dsi-virtual-channel-id = <0>;

qcom,mdss-dsi-stream = <0>;

qcom,mdss-dsi-panel-width = <480>;

qcom,mdss-dsi-panel-height = <800>;

qcom,mdss-dsi-h-front-porch = <100>;

qcom,mdss-dsi-h-back-porch = <94>;

qcom,mdss-dsi-h-pulse-width = <40>;

qcom,mdss-dsi-h-sync-skew = <0>;

qcom,mdss-dsi-v-back-porch = <4>;

qcom,mdss-dsi-v-front-porch = <6>;

qcom,mdss-dsi-v-pulse-width = <6>;

qcom,mdss-dsi-h-left-border = <0>;

qcom,mdss-dsi-h-right-border = <0>;

qcom,mdss-dsi-v-top-border = <0>;

qcom,mdss-dsi-v-bottom-border = <0>;

qcom,mdss-dsi-bpp = <24>;

qcom,mdss-dsi-underflow-color = <0xff>;

qcom,mdss-dsi-border-color = <0>;

qcom,mdss-dsi-on-command = [

39 01 00 00 00 00 04

B9 FF 83 79

39 01 00 00 00 00 03

BA 51 93

39 01 00 00 00 00 14

B1 00 50 44

EA 8D 08 11

11 11 27 2F

9A 1A 42 0B

6E F1 00 E6

39 01 00 00 00 00 0E

B2 00 00 3C

08 04 19 22

00 FF 08 04

19 20

39 01 00 00 00 00 20

B4 80 08 00

32 10 03 32

13 70 32 10

08 37 01 28

07 37 08 35

08 3D 44 08

00 40 08 28

08 30 30 04

39 01 00 00 00 00 30

D5 00 00 0A

00 01 05 00

03 00 88 88

88 88 23 01

67 45 02 13

88 88 88 88

88 88 88 88

88 88 54 76

10 32 31 20

88 88 88 88

88 88 00 00

00 00 00 00

39 01 00 00 00 00 24

E0 79 05 0F

14 23 24 3F

30 46 06 10

13 16 17 16

16 13 18 05

0F 14 23 24

3F 30 46 06

10 13 16 17

16 16 13 18

39 01 00 00 00 00 80

C1 01 00 07

10 17 1D 2A

33 3A 43 4A

52 5B 64 6D

78 7F 88 90

98 A0 A9 B2

B9 C1 C9 D1

D7 DF E6 ED

F4 FA FD 00

00 00 00 00

00 00 00 00

00 08 10 18

20 28 30 38

40 47 4F 58

60 68 70 78

80 88 90 98

A0 A9 B1 B9

C1 C9 D1 D8

E0 E8 F0 F9

FE 00 00 00

00 00 00 00

00 00 00 08

10 18 1E 26

2E 34 3A 41

49 4F 58 5E

67 6F 77 80

88 8F 97 9F

A7 AF B8 BF

C7 D1 D8 E3

EA F6 FF 00

00 00 00 00

00 00 00 00

23 01 00 00 00 00 02

cc 02

39 01 00 00 00 00 05

B6 00 9C 00

9C

05 01 00 00 96 00 02

11 00

05 01 00 00 78 00 02

29 00

];

qcom,mdss-dsi-off-command = [05 01 00 00 32 00 02 28 00

05 01 00 00 78 00 02 10 00];

qcom,mdss-dsi-on-command-state = "dsi_lp_mode";

qcom,mdss-dsi-off-command-state = "dsi_lp_mode";

qcom,mdss-dsi-h-sync-pulse = <1>;

qcom,mdss-dsi-traffic-mode = "burst_mode";

qcom,mdss-dsi-lane-map = "lane_map_3012";

qcom,mdss-dsi-bllp-eof-power-mode;

qcom,mdss-dsi-bllp-power-mode;

qcom,mdss-dsi-lane-0-state;

qcom,mdss-dsi-lane-1-state;

qcom,mdss-dsi-panel-timings = [78 1B 11 00 3E 43 16 1E 1D 03 04 00];

qcom,mdss-dsi-t-clk-post = <0x04>;

qcom,mdss-dsi-t-clk-pre = <0x1b>;

qcom,mdss-dsi-bl-min-level = <1>;

qcom,mdss-dsi-bl-max-level = <255>;

qcom,mdss-dsi-dma-trigger = "trigger_sw";

qcom,mdss-dsi-mdp-trigger = "none";

qcom,mdss-dsi-bl-pmic-control-type = "bl_ctrl_wled";

qcom,mdss-dsi-reset-sequence = <1 20>, <0 2>, <1 20>;

};

};

4. 第四个需要修改的地方是将kernel中屏的.dtsi文件include进msm8610-mdss-panel.dtsi中，否则编译过程中会提示错误。

5. 在例如msm8610-mtp.dtsi文件中加入屏的dsi-hx8379a-wvga-vid

否则编译过程中也会报错。

6.

实际开发中遇到的问题：

MIPI转LVDS的LCD，，lk方面：需要在AP/bootable/bootloader/lk/platform/msm_shared/mipi_dsi.c 文件中的数组sn65dis83_init_table[]=｛｝修改初始化参数

kernie方面：AP/kernel/drivers/video/msm/mdss/mipi_sn65dsi83_dsi2lvds-i2c.c文件中的数组sn65dis83_init_table[]=｛｝修改初始化参数

还有一些其他问题待续。。。。。