@lztmfx 在 Tina linux用屏幕转换芯片时I2C初始化问题 中说：

用上面的方法二报错是其他原因报的错，排查后不报错了，不过I2C还是通讯不上

GPIO模拟I2C调通了，贴下主要部分：

#define I2C_SCL  204 //PG12
#define I2C_SDA  205 //PG13

#define I2C_SCL_HIGH() (gpio_set_value(I2C_SCL, 1))
#define I2C_SCL_LOW()  (gpio_set_value(I2C_SCL, 0))
#define I2C_SDA_HIGH() gpio_direction_input(I2C_SDA) // 释放SDA（外部上拉拉高）
#define I2C_SDA_LOW()  gpio_direction_output(I2C_SDA, 0)
#define I2C_SDA_READ() gpio_get_value(I2C_SDA)

static void i2c_start(void)
{
    I2C_SDA_HIGH();
    I2C_SCL_HIGH();
	udelay(5);
    I2C_SDA_LOW();
	udelay(5);
    I2C_SCL_LOW();
}

static void i2c_stop(void)
{
    I2C_SDA_LOW();
    I2C_SCL_HIGH();
	udelay(5);
    I2C_SDA_HIGH();
	udelay(5);
}

注意使用完GPIO后要释放掉，否则后面用到这两个IO的驱动就要报错了，因为这两个IO是真正的I2C PIN，后面I2C驱动用得到，我这个案例就是驱动需要I2C初始化，但是LCD驱动在I2C驱动之前加载，在LCD驱动里面用不了硬件I2C的功能，查了资料，如果从调整驱动加载顺序的思路入手，能查到的方法要么不实际要么没有任何效果。不能让I2C在LCD前加载那就只能GPIO模拟I2C了，参考ST7789V GPIO模拟SPI看着不可行，实际没有测试，因为模拟SPI的GPIO可以不切换方向，而I2C SDA在ACK时需要切换输出为输入，在设备树定义gpio_x的方法不知道怎么在驱动切换GPIO方向，最终使用gpio_request()的方法申请GPIO来做

回复: 请问sys_config.fex与board.dts是什么关系

看打包流程设备树最终应该是打包成了sunxi.fex,然后最后是合并到sys_partition.fex描述的boot分区吗？看uboot感觉又是放在FAT分区，有点理不清逻辑了，和uboot defconfig的这几个参数有关吗？

CONFIG_SUNXI_NECESSARY_REPLACE_FDT=y
CONFIG_RESERVE_FDT_SIZE=0x20000
CONFIG_SYS_TEXT_BASE=0x43000000
CONFIG_SUNXI_FDT_ADDR=0x41800000

我想打包多份设备树在这个设备树分区里面，根据其他条件选择加载哪一份设备树

@shz18877605430 在 T113 切换存储，nand flash切换到SD卡启动，挂载文件系统报错 中说：

rootfstype=squashfs

rootfstype=ext4

T113S3使用NCS8801 LVDS转EDP芯片，需要LCD驱动里面通过I2C初始化NCS8801，但是实际测试发现，tina linux的i2c晚于disp驱动加载，这样disp驱动里面获取不到有效的i2c适配器。有什么方法让i2c在disp前加载？另外看别的帖子说不建议在disp里面用硬件i2c初始化，推荐用GPIO模拟，看了SDK里面ST7789V也是用GPIO模拟SPI，但是SPI write的时候，引脚的输入输出是固定的，不用切换引脚状态，但是I2C的SDA引脚在发送完数据后需要切换为input模式来接收ACK信号的，这样如果用lcd设备树里面的这种方式是不行的吧？这个还可以在disp驱动里面通过代码切换lcd_gpio_X的参数吗？如输入改为输出。

lcd_gpio_0 = <&pio PG 12 1 0 3 0>;
lcd_gpio_1 = <&pio PG 13 1 0 3 0>;

如果直接在disp驱动使用下面这种方式：

#define I2C_SCL  204
#define I2C_SDA  205
#define I2C_SCL_LOW()  gpio_set_value(I2C_SCL, 0)
#define I2C_SDA_HIGH() gpio_direction_output(I2C_SDA, 1)

开机会有一堆报错

[    0.650948] 8<--- cut here ---
[    0.650952] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[    0.650960] pgd = (ptrval)
[    0.658090] uart3: ttyS3 at MMIO 0x2500c00 (irq = 35, base_baud = 1500000) is a SUNXI
▒▒  0.660901] [00000000] *pgd=00000000
[    0.669008] sw_console_setup()1807 - console setup baud 115200 parity n bits 8, flow n
[    0.671684] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[    0.696238] Modules linked in:
[    0.696238] Modules linked in:
[    0.696249] CPU: 0 PID: 21 Comm: kworker/0:1 Not tainted 5.4.61 #159
[    0.696249] CPU: 0 PID: 21 Comm: kworker/0:1 Not tainted 5.4.61 #159
[    0.696256] Hardware name: Generic DT based system
[    0.696256] Hardware name: Generic DT based system
[    0.702736] printk: console [ttyS3] enabled
[    0.702736] printk: console [ttyS3] enabled
[    0.716144] Workqueue: events start_work
[    0.716144] Workqueue: events start_work
[    0.716154] PC is at LCD_panel_init+0x44/0x13c
[    0.716154] PC is at LCD_panel_init+0x44/0x13c
[    0.716162] LR is at LCD_panel_init+0x40/0x13c
[    0.716162] LR is at LCD_panel_init+0x40/0x13c
[    0.726281] printk: bootconsole [earlycon0] disabled
[    0.726281] printk: bootconsole [earlycon0] disabled
[    0.735110] pc : [<c03962cc>]    lr : [<c03962c8>]    psr: 60000013
[    0.735110] pc : [<c03962cc>]    lr : [<c03962c8>]    psr: 60000013
[    0.735114] sp : c714de20  ip : 00000000  fp : 00000000
[    0.735114] sp : c714de20  ip : 00000000  fp : 00000000
[    0.735117] r10: 00000001  r9 : 00000000  r8 : c0b1bb66
[    0.735117] r10: 00000001  r9 : 00000000  r8 : c0b1bb66
[    0.735124] r7 : c0b1bb50  r6 : 00000000  r5 : 0000000b  r4 : c714c000
[    0.735124] r7 : c0b1bb50  r6 : 00000000  r5 : 0000000b  r4 : c714c000
[    0.821770] r3 : 50ca96b2  r2 : 50ca96b2  r1 : 06c7e000  r0 : 00000026
[    0.821776] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    0.821783] Control: 10c5387d  Table: 4000406a  DAC: 00000051
[    0.829589] sun8iw20-pinctrl 2000000.pinctrl: 2000000.pinctrl supply vcc-pb not found, using dummy regulator
[    0.837001] Process kworker/0:1 (pid: 21, stack limit = 0x(ptrval))
[    0.837006] Stack: (0xc714de20 to 0xc714e000)
[    0.837017] de20: 00000000 50ca96b2 c730fa00 c7391000 c7390000 00000001 c0c5d028 c0373c88
[    0.837032] de40: c08272ba c730fa00 c714de98 c07248e0 00000000 00000000 00000000 c036dcf4
[    0.843742] uart uart4: uart4 supply uart not found, using dummy regulator
[    0.854390] de60: 00000000 00000000 00020002 c714de6c c714de6c 50ca96b2 c7070c00 c06ea2ac
[    0.854399] de80: c714c000 00000001 00000000 00000000 c0c596e8 c036df5c 00000001 00000000
[    0.854407] dea0: 00000000 00000000 00000004 00000000 00000002 00000002 00000000 00000008
[    0.854416] dec0: 00000000 50ca96b2 00000000 c714c000 c0c59350 00000002 c0c596e8 c0369d10
[    0.861637] uart4: ttyS4 at MMIO 0x2501000 (irq = 36, base_baud = 1500000) is a SUNXI
[    0.866247] dee0: 00000001 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.866256] df00: 00000000 00000000 00000000 50ca96b2 00000000 c0c591e0 00000001 c0369e28
[    0.866269] df20: c7040100 c76b6880 c0c594b8 c76b9900 00000000 00000000 c0c594bc c012f0ac
[    0.876002] uart uart5: uart5 supply uart not found, using dummy regulator
[    0.884498] df40: c7040100 c0c594b8 c7040100 c7040114 c76b6880 c714c000 c76b6898 c0b02d00
[    0.884508] df60: c0b0b27c c012f6d0 00000000 c701e880 c714c000 c701e840 c7040100 c012f49c
[    0.884517] df80: c704bec4 c701e89c 00000000 c0133f24 c701e840 c0133e04 00000000 00000000
[    0.884527] dfa0: 00000000 00000000 00000000 c01010e8 00000000 00000000 00000000 00000000
[    0.892457] uart5: ttyS5 at MMIO 0x2501400 (irq = 37, base_baud = 1500000) is a SUNXI
[    0.901302] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.901310] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    0.901333] [<c03962cc>] (LCD_panel_init) from [<c0373c88>] (disp_lcd_enable+0x2a4/0x2e0)
[    0.901349] [<c0373c88>] (disp_lcd_enable) from [<c036dcf4>] (disp_device_attached_and_enable+0x140/0x260)
[    0.911201] misc dump reg init
[    0.919574] [<c036dcf4>] (disp_device_attached_and_enable) from [<c036df5c>] (bsp_disp_device_switch+0x8c/0xec)
[    0.919586] [<c036df5c>] (bsp_disp_device_switch) from [<c0369d10>] (disp_device_set_config+0xd8/0x100)
[    0.919597] [<c0369d10>] (disp_device_set_config) from [<c0369e28>] (start_work+0xf0/0x174)
[    0.919610] [<c0369e28>] (start_work) from [<c012f0ac>] (process_one_work+0x144/0x20c)
[    0.919626] [<c012f0ac>] (process_one_work) from [<c012f6d0>] (worker_thread+0x234/0x2d8)
[    1.108057] [<c012f6d0>] (worker_thread) from [<c0133f24>] (kthread+0x120/0x12c)
[    1.116309] [<c0133f24>] (kthread) from [<c01010e8>] (ret_from_fork+0x14/0x2c)
[    1.124361] Exception stack(0xc714dfb0 to 0xc714dff8)
[    1.129992] dfa0:                                     00000000 00000000 00000000 00000000
[    1.139112] dfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.148231] dfe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    1.155610] Code: e2878016 e5cd3003 ebf6fd7c e3a06000 (e5963000)
[    1.162481] ---[ end trace a3d10cdfd74119e3 ]---

最后就是官方LCD调试PDF文档里面提到过SPI，I2C初始化的方式，是通过读取设备树信息probe设备的方式，那理论上这种也是需要i2c在disp之前加载吧，而且他T113S3的设备树貌似无法匹配手册上的方法。

有没有大佬熟悉全志的DRM框架啊？指导一下怎么在驱动层解决drm master冲突的问题？本身就是固定的一个crtc对应一个屏幕，没必要和主线kernel一样搞drm lease的方式，太不灵活了

A733 buildroot开发双屏异显时，两个进程同各输出显示到一个屏幕，但是只有第一个运行的进程能点亮屏幕，另一个进程会报错没有权限，查询资料发现问题源于DRM的master问题，即：同一时刻只有一个CRTC能作为master，另一个CRTC就无权限提交显示了，**在RK上不存在这种问题，RK上面，假设有两个屏幕，就是两个CRTC，每个CRTC下面至少有2个Plane,也就是一共有4个可以显示的平面，这4个平面可以有4个进程推送buf,一起显示，不会报错权限问题，同一个CRTC下的plane就会根据zpos规则显示。**这种应该是在驱动层实现的，全志是否可以实现这种效果？Master的问题严重制约了多屏异显的灵活性，无法多个进程各种推送要显示的屏幕。

A733的modetest信息：

root@A733:/# /modetest -M sunxi-drm
Encoders:
id      crtc    type    possible crtcs  possible clones
144     0       Virtual 0x00000003      0x00000001
146     126     DSI     0x00000003      0x00000002
148     100     TMDS    0x00000003      0x00000004

Connectors:
id      encoder status          name            size (mm)       modes   encoders
147     146     connected       DSI-1           58x103          1       146
  modes:
        name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
  720x1280 60 720 840 850 870 1280 1293 1298 1309 68300 flags: ; type: preferred, driver
  props:
        1 EDID:
                flags: immutable blob
                blobs:

                value:
        2 DPMS:
                flags: enum
                enums: On=0 Standby=1 Suspend=2 Off=3
                value: 0
        5 link-status:
                flags: enum
                enums: Good=0 Bad=1
                value: 0
        6 non-desktop:
                flags: immutable range
                values: 0 1
                value: 0
        4 TILE:
                flags: immutable blob
                blobs:

                value:
        20 CRTC_ID:
                flags: object
                value: 126
149     148     connected       HDMI-A-1        0x0             27      148
  modes:
        name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
  1920x1080 60 1920 2008 2052 2200 1080 1082 1087 1125 148500 flags: phsync, pvsync; type: preferred, driver
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: driver
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: driver
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 148352 flags: phsync, pvsync; type: driver
  1920x1080 60 1920 2008 2052 2200 1080 1084 1089 1125 148352 flags: phsync, pvsync; type: driver
  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 74250 flags: phsync, pvsync, interlace; type: driver
  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 74250 flags: phsync, pvsync, interlace; type: driver
  1920x1080i 60 1920 2008 2052 2200 1080 1084 1094 1125 74176 flags: phsync, pvsync, interlace; type: driver
  1920x1080 50 1920 2448 2492 2640 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: driver
  1920x1080 50 1920 2448 2492 2640 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: driver
  1920x1080i 50 1920 2448 2492 2640 1080 1084 1094 1125 74250 flags: phsync, pvsync, interlace; type: driver
  1920x1080i 50 1920 1952 2120 2304 1080 1126 1136 1250 72000 flags: phsync, nvsync, interlace; type: driver
  1680x1050 60 1680 1728 1760 1840 1050 1053 1059 1080 119000 flags: phsync, nvsync; type: driver
  1440x900 60 1440 1488 1520 1600 900 903 909 926 88750 flags: phsync, nvsync; type: driver
  1280x960 60 1280 1376 1488 1800 960 961 964 1000 108000 flags: phsync, pvsync; type: driver
  1280x800 60 1280 1328 1360 1440 800 803 809 823 71000 flags: phsync, nvsync; type: driver
  1280x720 60 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver
  1280x720 60 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver
  1280x720 60 1280 1390 1430 1650 720 725 730 750 74176 flags: phsync, pvsync; type: driver
  1280x720 50 1280 1720 1760 1980 720 725 730 750 74250 flags: phsync, pvsync; type: driver
  1280x720 48 1280 2240 2280 2500 720 725 730 750 90000 flags: phsync, pvsync; type: driver
  1280x720 48 1280 2240 2280 2500 720 725 730 750 89910 flags: phsync, pvsync; type: driver
  1024x768 60 1024 1048 1184 1344 768 771 777 806 65000 flags: nhsync, nvsync; type: driver
  800x600 60 800 840 968 1056 600 601 605 628 40000 flags: phsync, pvsync; type: driver
  800x600 56 800 824 896 1024 600 601 603 625 36000 flags: phsync, pvsync; type: driver
  640x480 60 640 656 752 800 480 490 492 525 25200 flags: nhsync, nvsync; type: driver
  640x480 60 640 656 752 800 480 490 492 525 25175 flags: nhsync, nvsync; type: driver
  props:
        1 EDID:
                flags: immutable blob
                blobs:

                value:
                        00ffffffffffff004a8b201980102019
                        001e010380000078ecee91a3544c9926
                        0f5054230800d1c0b300950081006140
                        4540814081c0023a801871382d40582c
                        250058c31000001e000000fc00000a20
                        20202020202020202020000000ff0000
                        0a2020202020202020202020000000fd
                        00383f545413000a20202020202001a3
                        020332f24f04051013141f6c6c6c276c
                        6c6c4b4ce200d5e305c00023097f0783
                        01000067030c001000383ce606050169
                        694f023a801871382d40582c250058c3
                        1000001e011d8018711c1620582c2500
                        58c31000009e00000000000000000000
                        00000000000000000000000000000000
                        0000000000000000000000000000007a
        2 DPMS:
                flags: enum
                enums: On=0 Standby=1 Suspend=2 Off=3
                value: 0
        5 link-status:
                flags: enum
                enums: Good=0 Bad=1
                value: 0
        6 non-desktop:
                flags: immutable range
                values: 0 1
                value: 0
        4 TILE:
                flags: immutable blob
                blobs:

                value:
        20 CRTC_ID:
                flags: object
                value: 100
        150 pixelformat_support:
                flags: enum
                enums: RGB888_8BITS=0 YUV444_8BITS=1 YUV422_8BITS=2 YUV420_8BITS=3 RGB888_10BITS=4 YUV444_10BITS=5 YUV422_10BITS=6 YUV420_10BITS=7 RGB888_12BITS=8 YUV444_12BITS=9 YUV422_12BITS=10 YUV420_12BITS=11 RGB888_16BITS=12 YUV444_16BITS=13 YUV422_16BITS=14 YUV420_16BITS=15
                value: 119
        151 pixelformat:
                flags: range
                values: 0 255
                value: 1
        152 dynamicrange_support:
                flags: enum
                enums: SDR=0 HDR10=1 HDR10P=2 HLG=3
                value: 3
        153 dynamicrange:
                flags: range
                values: 0 31
                value: 1

CRTCs:
id      fb      pos     size
100     168     (0,0)   (1920x1080)
  1920x1080 60 1920 2008 2052 2200 1080 1082 1087 1125 148500 flags: phsync, pvsync; type: preferred, driver
  props:
        22 ACTIVE:
                flags: range
                values: 0 1
                value: 1
        23 MODE_ID:
                flags: blob
                blobs:

                value:
                        144402008007d8070408980800003804
                        3a043f04650400003c00000005000000
                        48000000313932307831303830000000
                        00000000000000000000000000000000
                        00000000
        19 OUT_FENCE_PTR:
                flags: range
                values: 0 18446744073709551615
                value: 0
        24 VRR_ENABLED:
                flags: range
                values: 0 1
                value: 0
        28 GAMMA_LUT:
                flags: blob
                blobs:

                value:
        29 GAMMA_LUT_SIZE:
                flags: immutable range
                values: 0 4294967295
                value: 1024
        49 brightness:
                flags: range
                values: 0 100
                value: 50
        50 contrast:
                flags: range
                values: 0 100
                value: 50
        53 saturation:
                flags: range
                values: 0 100
                value: 50
        54 hue:
                flags: range
                values: 0 100
                value: 50
        33 SUNXI_CTM:
                flags: blob
                blobs:

                value:
        34 BACKEND_DATA:
                flags: blob
                blobs:

                value:
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        0000000000000000
        40 FRAME_RATE_CHANGE:
                flags: range
                values: 0 1
                value: 0
        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
                        0d0000000000000000000000
126     0       (0,0)   (720x1280)
  720x1280 60 720 840 850 870 1280 1293 1298 1309 68300 flags: ; type: preferred, driver
  props:
        22 ACTIVE:
                flags: range
                values: 0 1
                value: 1
        23 MODE_ID:
                flags: blob
                blobs:

                value:
                        cc0a0100d00248035203660300000005
                        0d0512051d0500003c00000000000000
                        48000000373230783132383000000000
                        00000000000000000000000000000000
                        00000000
        19 OUT_FENCE_PTR:
                flags: range
                values: 0 18446744073709551615
                value: 0
        24 VRR_ENABLED:
                flags: range
                values: 0 1
                value: 0
        28 GAMMA_LUT:
                flags: blob
                blobs:

                value:
        29 GAMMA_LUT_SIZE:
                flags: immutable range
                values: 0 4294967295
                value: 1024
        49 brightness:
                flags: range
                values: 0 100
                value: 50
        50 contrast:
                flags: range
                values: 0 100
                value: 50
        53 saturation:
                flags: range
                values: 0 100
                value: 50
        54 hue:
                flags: range
                values: 0 100
                value: 50
        33 SUNXI_CTM:
                flags: blob
                blobs:

                value:
        34 BACKEND_DATA:
                flags: blob
                blobs:

                value:
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        00000000000000000000000000000000
                        0000000000000000
        40 FRAME_RATE_CHANGE:
                flags: range
                values: 0 1
                value: 0
        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
                        2c0000000100000000000000

Planes:
id      crtc    fb      CRTC x,y        x,y     gamma size      possible crtcs
93      100     168     0,0             0,0     0               0x00000001
  formats: RG24 BG24 AR24 AB24 RA24 BA24 XR24 XB24 RX24 BX24 RG16 BG16 AR12 AB12 RA12 BA12 AR15 AB15 RA15 BA15 AR30 AB30 RA30 BA30 NV61 NV16 YU16 YV16 NV12 NV21 YU12 YV12 YU11 YV11 P010 P210
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 1
        17 FB_ID:
                flags: object
                value: 168
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 100
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 1920
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 1080
        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
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                flags: range
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        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
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                in_formats blob decoded:
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                         BG24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
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                         AB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XR24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
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                         RG16:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BG16:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
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                         AB12:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RA12:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BA12:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
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                         AB15:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RA15:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BA15:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AR30:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AB30:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RA30:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BA30:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         NV61:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         NV16:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
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                         NV12:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         NV21:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         YU12:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         YV12:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
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                         P210:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
        95 alpha:
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                value: 65535
        96 pixel blend mode:
                flags: enum
                enums: None=2 Pre-multiplied=0 Coverage=1
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        97 zpos:
                flags: range
                values: 0 3
                value: 0
        98 rotation:
                flags: bitmask
                values: rotate-0=0x1 rotate-90=0x2 rotate-180=0x4 rotate-270=0x8 reflect-x=0x10 reflect-y=0x20
                value: 1
        67 COLOR:
                flags: signed range
                values: 0 4294967295
                value: 0
        32 FRONTEND_DATA:
                flags: blob
                blobs:

                value:

                to many value,use '-z' show all data

        35 EOTF:
                flags: signed range
                values: 0 20
                value: 1
        36 COLOR_SPACE:
                flags: signed range
                values: 0 20
                value: 1
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                flags: signed range
                values: 0 20
                value: 1
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                flags: range
                values: 0 983103
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        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
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  props:
        8 type:
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                value: 0
        17 FB_ID:
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                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
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                values: -2147483648 2147483647
                value: 0
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 0
        16 CRTC_H:
                flags: range
                values: 0 2147483647
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        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
                value: 0
        12 SRC_H:
                flags: range
                values: 0 4294967295
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        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
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                in_formats blob decoded:
                         RG24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BG24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AR24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XR24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RX24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BX24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RG16:  (UNKNOWN MODIFIER) LINEAR
                         BG16:  (UNKNOWN MODIFIER) LINEAR
                         AR12:  (UNKNOWN MODIFIER) LINEAR
                         AB12:  (UNKNOWN MODIFIER) LINEAR
                         RA12:  (UNKNOWN MODIFIER) LINEAR
                         BA12:  (UNKNOWN MODIFIER) LINEAR
                         AR15:  LINEAR
                         AB15:  LINEAR
                         RA15:  (UNKNOWN MODIFIER) LINEAR
                         BA15:  (UNKNOWN MODIFIER) LINEAR
                         AR30:  (UNKNOWN MODIFIER) LINEAR
                         AB30:  (UNKNOWN MODIFIER) LINEAR
                         RA30:  LINEAR
                         BA30:  LINEAR
                         NV61:  LINEAR
                         NV16:  LINEAR
                         YU16:  LINEAR
                         YV16:  LINEAR
                         NV12:  LINEAR
                         NV21:  LINEAR
                         YU12:  LINEAR
                         YV12:  LINEAR
                         YU11:  LINEAR
                         YV11:  LINEAR
                         P010:  LINEAR
                         P210:  LINEAR
        103 alpha:
                flags: range
                values: 0 65535
                value: 65535
        104 pixel blend mode:
                flags: enum
                enums: None=2 Pre-multiplied=0 Coverage=1
                value: 0
        105 zpos:
                flags: range
                values: 0 3
                value: 0
        67 COLOR:
                flags: signed range
                values: 0 4294967295
                value: 0
        32 FRONTEND_DATA:
                flags: blob
                blobs:

                value:

                to many value,use '-z' show all data

        35 EOTF:
                flags: signed range
                values: 0 20
                value: 1
        36 COLOR_SPACE:
                flags: signed range
                values: 0 20
                value: 1
        39 COLOR_RANGE:
                flags: signed range
                values: 0 20
                value: 0
        41 compressed_image_crop:
                flags: range
                values: 0 983103
                value: 0
        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
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  formats: RG24 BG24 AR24 AB24 RA24 BA24 XR24 XB24 RX24 BX24 RG16 BG16 AR12 AB12 RA12 BA12 AR15 AB15 RA15 BA15
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 0
        17 FB_ID:
                flags: object
                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 0
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 0
        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
                value: 0
        12 SRC_H:
                flags: range
                values: 0 4294967295
                value: 0
        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
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                in_formats blob decoded:
                         RG24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BG24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AR24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XR24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RX24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BX24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RG16:  (UNKNOWN MODIFIER) LINEAR
                         BG16:  (UNKNOWN MODIFIER) LINEAR
                         AR12:  (UNKNOWN MODIFIER) LINEAR
                         AB12:  (UNKNOWN MODIFIER) LINEAR
                         RA12:  (UNKNOWN MODIFIER) LINEAR
                         BA12:  (UNKNOWN MODIFIER) LINEAR
                         AR15:  LINEAR
                         AB15:  LINEAR
                         RA15:  (UNKNOWN MODIFIER) LINEAR
                         BA15:  (UNKNOWN MODIFIER) LINEAR
        109 alpha:
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                values: 0 65535
                value: 65535
        110 pixel blend mode:
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        111 zpos:
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                value: 0
        67 COLOR:
                flags: signed range
                values: 0 4294967295
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        32 FRONTEND_DATA:
                flags: blob
                blobs:

                value:

                to many value,use '-z' show all data

        35 EOTF:
                flags: signed range
                values: 0 20
                value: 1
        36 COLOR_SPACE:
                flags: signed range
                values: 0 20
                value: 1
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                flags: signed range
                values: 0 20
                value: 0
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                flags: range
                values: 0 983103
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        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
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  formats: RG24 BG24 AR24 AB24 RA24 BA24 XR24 XB24 RX24 BX24 RG16 BG16 AR12 AB12 RA12 BA12 AR15 AB15 RA15 BA15
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 0
        17 FB_ID:
                flags: object
                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 0
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 0
        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
                value: 0
        12 SRC_H:
                flags: range
                values: 0 4294967295
                value: 0
        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
                        01000000000000001400000018000000
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                        52473136424731364152313241423132
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                        00000000000000000000000000000000
                in_formats blob decoded:
                         RG24:  LINEAR
                         BG24:  LINEAR
                         AR24:  LINEAR
                         AB24:  LINEAR
                         RA24:  LINEAR
                         BA24:  LINEAR
                         XR24:  LINEAR
                         XB24:  LINEAR
                         RX24:  LINEAR
                         BX24:  LINEAR
                         RG16:  LINEAR
                         BG16:  LINEAR
                         AR12:  LINEAR
                         AB12:  LINEAR
                         RA12:  LINEAR
                         BA12:  LINEAR
                         AR15:  LINEAR
                         AB15:  LINEAR
                         RA15:  LINEAR
                         BA15:  LINEAR
        115 alpha:
                flags: range
                values: 0 65535
                value: 65535
        116 pixel blend mode:
                flags: enum
                enums: None=2 Pre-multiplied=0 Coverage=1
                value: 0
        117 zpos:
                flags: range
                values: 0 3
                value: 0
        67 COLOR:
                flags: signed range
                values: 0 4294967295
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        32 FRONTEND_DATA:
                flags: blob
                blobs:

                value:

                to many value,use '-z' show all data

        35 EOTF:
                flags: signed range
                values: 0 20
                value: 1
        36 COLOR_SPACE:
                flags: signed range
                values: 0 20
                value: 1
        39 COLOR_RANGE:
                flags: signed range
                values: 0 20
                value: 0
        41 compressed_image_crop:
                flags: range
                values: 0 983103
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        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
                        00000000010403000008000000080000
                        000800000000000000000000
120     0       0       0,0             0,0     0               0x00000002
  formats: RG24 BG24 AR24 AB24 RA24 BA24 XR24 XB24 RX24 BX24 RG16 BG16 AR12 AB12 RA12 BA12 AR15 AB15 RA15 BA15 AR30 AB30 RA30 BA30 NV61 NV16 YU16 YV16 NV12 NV21 YU12 YV12 YU11 YV11 P010 P210
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 1
        17 FB_ID:
                flags: object
                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
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                flags: signed range
                values: -2147483648 2147483647
                value: 0
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
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        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 720
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 1280
        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
                value: 47185920
        12 SRC_H:
                flags: range
                values: 0 4294967295
                value: 83886080
        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
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                        59553136595631364e5631324e563231
                        59553132595631325955313159563131
                        5030313050323130ffffffff0f000000
                        00000000000000000000000000000000
                in_formats blob decoded:
                         RG24:  LINEAR
                         BG24:  LINEAR
                         AR24:  LINEAR
                         AB24:  LINEAR
                         RA24:  LINEAR
                         BA24:  LINEAR
                         XR24:  LINEAR
                         XB24:  LINEAR
                         RX24:  LINEAR
                         BX24:  LINEAR
                         RG16:  LINEAR
                         BG16:  LINEAR
                         AR12:  LINEAR
                         AB12:  LINEAR
                         RA12:  LINEAR
                         BA12:  LINEAR
                         AR15:  LINEAR
                         AB15:  LINEAR
                         RA15:  LINEAR
                         BA15:  LINEAR
                         AR30:  LINEAR
                         AB30:  LINEAR
                         RA30:  LINEAR
                         BA30:  LINEAR
                         NV61:  LINEAR
                         NV16:  LINEAR
                         YU16:  LINEAR
                         YV16:  LINEAR
                         NV12:  LINEAR
                         NV21:  LINEAR
                         YU12:  LINEAR
                         YV12:  LINEAR
                         YU11:  LINEAR
                         YV11:  LINEAR
                         P010:  LINEAR
                         P210:  LINEAR
        122 alpha:
                flags: range
                values: 0 65535
                value: 65535
        123 pixel blend mode:
                flags: enum
                enums: None=2 Pre-multiplied=0 Coverage=1
                value: 0
        124 zpos:
                flags: range
                values: 0 2
                value: 0
        67 COLOR:
                flags: signed range
                values: 0 4294967295
                value: 0
        32 FRONTEND_DATA:
                flags: blob
                blobs:

                value:

                to many value,use '-z' show all data

        35 EOTF:
                flags: signed range
                values: 0 20
                value: 1
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                flags: signed range
                values: 0 20
                value: 1
        39 COLOR_RANGE:
                flags: signed range
                values: 0 20
                value: 0
        41 compressed_image_crop:
                flags: range
                values: 0 983103
                value: 0
        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
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  formats: RG24 BG24 AR24 AB24 RA24 BA24 XR24 XB24 RX24 BX24 RG16 BG16 AR12 AB12 RA12 BA12 AR15 AB15 RA15 BA15
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 0
        17 FB_ID:
                flags: object
                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
                value: -360
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
                value: -640
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 720
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 1280
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                flags: range
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        10 SRC_Y:
                flags: range
                values: 0 4294967295
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        11 SRC_W:
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                value: 47185920
        12 SRC_H:
                flags: range
                values: 0 4294967295
                value: 83886080
        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
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                        41523234414232345241323442413234
                        58523234584232345258323442583234
                        52473136424731364152313241423132
                        52413132424131324152313541423135
                        5241313542413135ffff0c0000000000
                        00000000000000001c00000000000092
                        ff030000000000000000000000000000
                        1d00000000000092ff03000000000000
                        00000000000000001e00000000000092
                        ff030000000000000000000000000000
                        1f00000000000092ffff0f0000000000
                        00000000000000000000000000000000
                in_formats blob decoded:
                         RG24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BG24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AR24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         AB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BA24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XR24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         XB24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RX24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         BX24:  (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) (UNKNOWN MODIFIER) LINEAR
                         RG16:  (UNKNOWN MODIFIER) LINEAR
                         BG16:  (UNKNOWN MODIFIER) LINEAR
                         AR12:  (UNKNOWN MODIFIER) LINEAR
                         AB12:  (UNKNOWN MODIFIER) LINEAR
                         RA12:  (UNKNOWN MODIFIER) LINEAR
                         BA12:  (UNKNOWN MODIFIER) LINEAR
                         AR15:  LINEAR
                         AB15:  LINEAR
                         RA15:  (UNKNOWN MODIFIER) LINEAR
                         BA15:  (UNKNOWN MODIFIER) LINEAR
        129 alpha:
                flags: range
                values: 0 65535
                value: 65535
        130 pixel blend mode:
                flags: enum
                enums: None=2 Pre-multiplied=0 Coverage=1
                value: 0
        131 zpos:
                flags: range
                values: 0 2
                value: 0
        67 COLOR:
                flags: signed range
                values: 0 4294967295
                value: 0
        32 FRONTEND_DATA:
                flags: blob
                blobs:

                value:

                to many value,use '-z' show all data

        35 EOTF:
                flags: signed range
                values: 0 20
                value: 1
        36 COLOR_SPACE:
                flags: signed range
                values: 0 20
                value: 1
        39 COLOR_RANGE:
                flags: signed range
                values: 0 20
                value: 0
        41 compressed_image_crop:
                flags: range
                values: 0 983103
                value: 0
        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
                        0000000001040100000a0000000a0000
                        000a00000000000000000000
133     0       0       0,0             0,0     0               0x00000002
  formats: RG24 BG24 AR24 AB24 RA24 BA24 XR24 XB24 RX24 BX24 RG16 BG16 AR12 AB12 RA12 BA12 AR15 AB15 RA15 BA15
  props:
        8 type:
                flags: immutable enum
                enums: Overlay=0 Primary=1 Cursor=2
                value: 0
        17 FB_ID:
                flags: object
                value: 0
        18 IN_FENCE_FD:
                flags: signed range
                values: -1 2147483647
                value: -1
        20 CRTC_ID:
                flags: object
                value: 0
        13 CRTC_X:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        14 CRTC_Y:
                flags: signed range
                values: -2147483648 2147483647
                value: 0
        15 CRTC_W:
                flags: range
                values: 0 2147483647
                value: 0
        16 CRTC_H:
                flags: range
                values: 0 2147483647
                value: 0
        9 SRC_X:
                flags: range
                values: 0 4294967295
                value: 0
        10 SRC_Y:
                flags: range
                values: 0 4294967295
                value: 0
        11 SRC_W:
                flags: range
                values: 0 4294967295
                value: 0
        12 SRC_H:
                flags: range
                values: 0 4294967295
                value: 0
        30 IN_FORMATS:
                flags: immutable blob
                blobs:

                value:
                        01000000000000001400000018000000
                        01000000680000005247323442473234
                        41523234414232345241323442413234
                        58523234584232345258323442583234
                        52473136424731364152313241423132
                        52413132424131324152313541423135
                        5241313542413135ffff0f0000000000
                        00000000000000000000000000000000
                in_formats blob decoded:
                         RG24:  LINEAR
                         BG24:  LINEAR
                         AR24:  LINEAR
                         AB24:  LINEAR
                         RA24:  LINEAR
                         BA24:  LINEAR
                         XR24:  LINEAR
                         XB24:  LINEAR
                         RX24:  LINEAR
                         BX24:  LINEAR
                         RG16:  LINEAR
                         BG16:  LINEAR
                         AR12:  LINEAR
                         AB12:  LINEAR
                         RA12:  LINEAR
                         BA12:  LINEAR
                         AR15:  LINEAR
                         AB15:  LINEAR
                         RA15:  LINEAR
                         BA15:  LINEAR
        135 alpha:
                flags: range
                values: 0 65535
                value: 65535
        136 pixel blend mode:
                flags: enum
                enums: None=2 Pre-multiplied=0 Coverage=1
                value: 0
        137 zpos:
                flags: range
                values: 0 2
                value: 0
        67 COLOR:
                flags: signed range
                values: 0 4294967295
                value: 0
        32 FRONTEND_DATA:
                flags: blob
                blobs:

                value:

                to many value,use '-z' show all data

        35 EOTF:
                flags: signed range
                values: 0 20
                value: 1
        36 COLOR_SPACE:
                flags: signed range
                values: 0 20
                value: 1
        39 COLOR_RANGE:
                flags: signed range
                values: 0 20
                value: 0
        41 compressed_image_crop:
                flags: range
                values: 0 983103
                value: 0
        31 FEATURE:
                flags: immutable blob
                blobs:

                value:
                        00000000010402000008000000080000
                        000800000000000000000000

Frame buffers:
id      size    pitch

root@A733:/# neofetch
        #####           root@A733
       #######          ---------
       ##O#O##          OS: Buildroot 2022.05 aarch64
       #######          Host: sun60iw2
     ###########        Kernel: 5.15.147
    #############       Uptime: 1 day, 23 hours, 43 mins
   ###############      Shell: sh
   ################     Resolution: 720x1280
  #################     Terminal: adb_shell
#####################   CPU: (8) @ 1.794GHz
#####################   Memory: 115MiB / 5919MiB
  #################




root@A733:/#

双屏异显有测试吗？modetest命令测试显示彩虹屏只能显示一个屏，另一个屏显示无权限，估计有bug

@h291912 看一看SD卡的设备树有没有选对，看原理图SD卡用的是哪组

@iot_guhe 我都不知道怎么好掉的，应该是kernel没有识别FLASH的问题，看看kernel config是不是有些spi flash,ubi之类的选项没有打开

调试一块3个数据通道的屏，即只有D0P/N,D1P/N,D2P/N,CKP/N，是否可以在设备树直接写

dsi,lanes = <3>;

全志哪些芯片支持DRM驱动？哪些是fb+de驱动？现在被T113S3上的显示图层问题搞崩溃了，disp手册就说了一下总体框架和各种接口的含义，具体通道数量，图层数量不一定所有型号IC都一致，/sys/class/disp/disp/attr能获取的信息不多，ion显存这块没说怎么分配，直接跑参考的demo项目只要涉及显示的除了播放视频demo显示正常，其他的全部发生段错误，libuapi也看了，videoOutPort.h也看了，libuapi配置的时候还不能选用cma分配内存，不然自带的lvgl demo都起不来,只能用ION，displayV1和V2又是什么区别？懵逼了，要是支持drm框架就舒服了？后面新出的V851 V853是DRM框架吗？drm只要modetest一看整个显示逻辑就清晰多了。

看DISP的PDF有一些描述，但是不是很清楚，比如要显示多个图层时，每个图层的内存怎么申请和分配？只显示一个图层的时候，mmap申请内存就可以推到fb0显示，多图层不知道怎么管理，像drm框架有crtc,crtc下面有多个plane,每个plane的显存都是分开的，很直观，这个私有的disp框架有点搞不懂，播放视频demo的显示部分是封装的吧？看不到实现

@hansk

#define I2C_SCL_HIGH() (gpio_set_value(I2C_SCL, 1))
#define I2C_SCL_LOW()  (gpio_set_value(I2C_SCL, 0))
#define I2C_SDA_HIGH() gpio_direction_input(I2C_SDA) // 释放SDA（外部上拉拉高）
#define I2C_SDA_LOW()  gpio_direction_output(I2C_SDA, 0)
#define I2C_SDA_READ() gpio_get_value(I2C_SDA)

void init_gpio(void)
{
	int ret = 0;
	ret = gpio_request(I2C_SDA, NULL);
	if(ret != 0)
	{
		printk("\n\n\n%s,%d,ncs8801 panel\n\n\n\n",__func__,__LINE__);
	}
	ret = gpio_request(I2C_SCL, NULL);
	if(ret != 0)
	{
		printk("\n\n\n%s,%d,ncs8801 panel\n\n\n\n",__func__,__LINE__);
	}

	// 配置SCL为输出，初始高电平
    gpio_direction_output(I2C_SDA, 1);
    // SDA初始化为输出高电平（开漏模式需结合外部上拉）
    gpio_direction_output(I2C_SCL, 1);
}

void deinit_gpio(void)
{
    gpio_free(I2C_SCL);
    gpio_free(I2C_SDA);
}

static void i2c_start(void)
{
    I2C_SDA_HIGH();
    I2C_SCL_HIGH();
	udelay(5);
    I2C_SDA_LOW();
	udelay(5);
    I2C_SCL_LOW();
}

static void i2c_stop(void)
{
    I2C_SDA_LOW();
    I2C_SCL_HIGH();
	udelay(5);
    I2C_SDA_HIGH();
	udelay(5);
}

static int i2c_write_byte(uint8_t data)
{
    int ack = 0;
    int i;
    for (i = 7; i >= 0; i--)
    {
        (data & (1 << i)) ? I2C_SDA_HIGH() : I2C_SDA_LOW();
        udelay(2);
        I2C_SCL_HIGH();
        udelay(5);
        I2C_SCL_LOW();
        udelay(2);
    }

    // 释放 SDA 以便从机发送 ACK
    I2C_SDA_HIGH();
    I2C_SCL_HIGH();
    udelay(2);
    ack = I2C_SDA_READ() == 0; // 读取 ACK
    I2C_SCL_LOW();
    return ack;
}

static uint8_t i2c_read_byte(int ack)
{
    uint8_t data = 0;
    int i;
    
    // 先设定 SDA 为输入模式
    gpio_direction_input(I2C_SDA);
    
    for (i = 7; i >= 0; i--)
    {
        I2C_SCL_HIGH();
        udelay(2);
        data |= (I2C_SDA_READ() << i);
        I2C_SCL_LOW();
        udelay(2);
    }
    
    // 发送 ACK 或 NACK
    if (ack)
        I2C_SDA_LOW();
    else
        I2C_SDA_HIGH(); // 释放 SDA 发送 NACK

    I2C_SCL_HIGH();
    udelay(5);
    I2C_SCL_LOW();
    
    return data;
}

int i2c_based_gpio_write(uint8_t i2cid, uint8_t addr, uint8_t send_val)
{
    i2c_start();
    if (!i2c_write_byte((i2cid << 1)))
	{
        i2c_stop();
        return -1;
    }
    if (!i2c_write_byte(addr))
	{
        i2c_stop();
        return -1;
    }
    if (!i2c_write_byte(send_val))
	{
        i2c_stop();
        return -1;
    }
    i2c_stop();
    return 0;
}

int i2c_based_gpio_write_lists(uint8_t i2cid, const struct reg_data *list, size_t count) {
    size_t i;
    for (i = 0; i < count; i++) {
        if (i2c_based_gpio_write(i2cid, list[i].reg, list[i].val) < 0) {
            return -1;
        }
    }
    return 0;
}

int i2c_based_gpio_read(uint8_t i2cid, uint8_t addr, uint8_t *recv_val)
{
    i2c_start();
    if (!i2c_write_byte((i2cid << 1)))
	{
        i2c_stop();
        return -1;
    }
    if (!i2c_write_byte(addr))
	{
        i2c_stop();
        return -1;
    }
    
    i2c_start();
    if (!i2c_write_byte((i2cid << 1) | 1))
	{
        i2c_stop();
        return -1;
    }
    *recv_val = i2c_read_byte(1);
    i2c_stop();
    return 0;
}

i2c读写部分都在这儿了，写部分没问题了，读部分不知道有没有问题，写正常就点亮了我就没排查读了，我读ncs8801s时相关寄存器的值和预期不一样，但是屏亮了，我暂时不管了，后面有时间再看是值确实不对还是读的时序不对导致读出的值不对

@hansk 发不了联系方式的，你看我资料能不能发邮件