在VCUTRD 2020.1 里设置HDMI-TX显示QT界面

hankfu

发布于 2020-09-01 14:56:15

2.3K2

发布于 2020-09-01 14:56:15

文章被收录于专栏：hank hankhank

1. 作者

付汉杰 hankf@xilinx.com 2020-08-26

2. 测试环境

ZCU106 Rev 1.0
Vivado 2020.1
PetaLinux 2020.1
VCU TRD 2020.1

3. Mixer的硬件设置

将VCU TRD 2020.1 的Vivado工程中的Mixer的Layer 8按如下修改。

Video format修改为BGRA8
勾选 Enable Global Alpha

编译整个工程, 得到bit文件，导出含有bit的xsa文件。

4. PetaLinux 工程

基于rdf0428-zcu106-vcu-trd-2020.1/apu/vcu_petalinux_bsp/xilinx-vcu-zcu106-v2020.1-final.bsp创建工程，导入上述xsa文件。

4.1. Mixer的软件设置

在project-spec/meta-user/recipes-bsp/device-tree/files/vcu_trd.dtsi里，设置Mixer的DMA和Primary Plane等信息。

VCU TRD 参考设计中的硬件工程和devicetree必须对应。vcu_trd.dtsi需要和Vivado工程vcu_trd对应使用。在project-spec/meta-user/recipes-bsp/device-tree/files/目录下，system-user.dtsi必须指向vcu_trd.dtsi。

4.1.1. 删除layer0的primary

    &xx_mix_master {
		/delete-property/ xlnx,layer-primary;
    };

4.1.2. 增加layer 8的primary

	&xx_mix_overlay_8 {
		xlnx,layer-alpha;
        xlnx,layer-primary;
		xlnx,layer-max-height = <1080>;
		xlnx,layer-max-width = <1920>;
		xlnx,vformat = "AR24";
	};

4.2. 指定xorg使用DRI设备

把文件project-spec/meta-user/recipes-graphics/xorg-xserver/xserver-xf86-config/zynqmp/xorg.conf中的DRICard值，从0改为1。修改后，Section "Device"如下。

	Section "Device"
			Identifier      "ZynqMP"
			Driver          "armsoc"
			Option          "DRICard"               "1"
			Option          "DRI2"                  "true"
			Option          "DRI2_PAGE_FLIP"        "false"
			Option          "DRI2_WAIT_VSYNC"       "true"
			Option          "SWcursorLCD"           "false"
			Option          "DEBUG"                 "false"
			Option          "DPMS"                  "false"
	EndSection

单板启动后，文件在目录/etc/X11/下，也可以在单板启动后修改/etc/X11/xorg.conf中的DRICard值为1。

4.3. 编译PetaLinux 工程

编译PetaLinux工程，生成BOOT.BIN、boot.scr、Image.ub文件。

5. 测试过程

5.1. 启动开发板

将BOOT.BIN、boot.scr、Image.ub文件，拷入SD卡中，启动开发板。

5.2. 查看DRI设备信息

查看DRI设备信息， ls -l /dev/dri/by-path/，可以得到准确的mixer信息。

root@vcu_trd:~# ls -l /dev/dri/by-path/
total 0
lrwxrwxrwx    1 root     root             8 Aug 26 01:41 platform-a0070000.v_mix-card -> ../card1
lrwxrwxrwx    1 root     root             8 Aug 26 01:41 platform-fd4a0000.zynqmp-display-card -> ../card0

5.3. 查看并设置mixer primary Plane

root@vcu_trd:~# ls -l /sys/module/xlnx_mixer/parameters/mixer_primary_enable
-rw-------    1 root     root          4096 Aug 26 01:46 /sys/module/xlnx_mixer/parameters/mixer_primary_enable
root@vcu_trd:~# cat /sys/module/xlnx_mixer/parameters/mixer_primary_enable
N
root@vcu_trd:~# echo Y > /sys/module/xlnx_mixer/parameters/mixer_primary_enable
root@vcu_trd:~# cat /sys/module/xlnx_mixer/parameters/mixer_primary_enable
Y

5.4. 使用命令modetest查看HDMI-TX信息

modetest的设备信息与硬件相关。根据DRI设备信息，本设计的modetest命令是“modetest -D a0070000.v_mix”。通过查看HDMI-TX信息，可以得到Connectors ID。

上述命令的执行记录很长，也可以使用grep过滤输出，比如使用grep -A 8 -i "connectors"，之输出 Connectors字段后的8行打印。过滤后的信息如下：

root@vcu_trd:~# modetest -D a0070000.v_mix | grep -A 8 -i "connectors"
Connectors:
id      encoder status          name            size (mm)       modes   encoders
44      43      connected       HDMI-A-1        610x350         57      43
  modes:
        name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
  3840x2160 60.00 3840 4016 4104 4400 2160 2168 2178 2250 594000 flags: phsync, nvsync; type: preferred, driver
  3840x2160 60.00 3840 4016 4104 4400 2160 2168 2178 2250 594000 flags: phsync, pvsync; type: driver
  3840x2160 59.94 3840 4016 4104 4400 2160 2168 2178 2250 593407 flags: phsync, pvsync; type: driver
  3840x2160 50.00 3840 4896 4984 5280 2160 2168 2178 2250 594000 flags: phsync, pvsync; type: driver
root@vcu_trd:~#

命令“modetest -D a0070000.v_mix”的完整执行记录如下：

使用命令modetest -D a0070000.v_mix查看HDMI-TX信息

root@vcu_trd:~# modetest -D a0070000.v_mix
Encoders:
id      crtc    type    possible crtcs  possible clones
43      42      TMDS    0x00000001      0x00000000
Connectors:
id      encoder status          name            size (mm)       modes   encoders
44      43      connected       HDMI-A-1        610x350         57      43
modes:
name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
3840x2160 60.00 3840 4016 4104 4400 2160 2168 2178 2250 594000 flags: phsync, nvsync; type: preferred, driver
3840x2160 60.00 3840 4016 4104 4400 2160 2168 2178 2250 594000 flags: phsync, pvsync; type: driver
3840x2160 59.94 3840 4016 4104 4400 2160 2168 2178 2250 593407 flags: phsync, pvsync; type: driver
3840x2160 50.00 3840 4896 4984 5280 2160 2168 2178 2250 594000 flags: phsync, pvsync; type: driver
3840x2160 30.00 3840 4016 4104 4400 2160 2168 2178 2250 297000 flags: phsync, pvsync; type: driver
3840x2160 30.00 3840 4016 4104 4400 2160 2168 2178 2250 297000 flags: phsync, pvsync; type: driver
3840x2160 29.97 3840 4016 4104 4400 2160 2168 2178 2250 296703 flags: phsync, pvsync; type: driver
3840x2160 25.00 3840 4896 4984 5280 2160 2168 2178 2250 297000 flags: phsync, pvsync; type: driver
3840x2160 25.00 3840 4896 4984 5280 2160 2168 2178 2250 297000 flags: phsync, pvsync; type: driver
3840x2160 24.00 3840 5116 5204 5500 2160 2168 2178 2250 297000 flags: phsync, pvsync; type: driver
3840x2160 24.00 3840 5116 5204 5500 2160 2168 2178 2250 297000 flags: phsync, pvsync; type: driver
3840x2160 23.98 3840 5116 5204 5500 2160 2168 2178 2250 296703 flags: phsync, pvsync; type: driver
2560x1440 59.95 2560 2608 2640 2720 1440 1443 1448 1481 241500 flags: phsync, nvsync; type: driver
2048x1280 59.99 2048 2192 2416 2784 1280 1281 1284 1325 221277 flags: nhsync, pvsync; type:
2048x1080 24.00 2048 2096 2128 2208 1080 1083 1093 1099 58230 flags: phsync, nvsync; type: driver
1920x1080 60.00 1920 2008 2052 2200 1080 1084 1089 1125 148500 flags: nhsync, nvsync; type: driver
1920x1080 60.00 1920 2008 2052 2200 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: driver
1920x1080 59.94 1920 2008 2052 2200 1080 1084 1089 1125 148352 flags: phsync, pvsync; type: driver
1920x1080 50.00 1920 2448 2492 2640 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: driver
1920x1080 30.00 1920 2008 2052 2200 1080 1084 1089 1125 74250 flags: phsync, pvsync; type: driver
1920x1080 29.97 1920 2008 2052 2200 1080 1084 1089 1125 74176 flags: phsync, pvsync; type: driver
1920x1080 25.00 1920 2448 2492 2640 1080 1084 1089 1125 74250 flags: phsync, pvsync; type: driver
1920x1080 24.00 1920 2558 2602 2750 1080 1084 1089 1125 74250 flags: phsync, pvsync; type: driver
1920x1080 23.98 1920 2558 2602 2750 1080 1084 1089 1125 74176 flags: phsync, pvsync; type: driver
1600x1200 60.00 1600 1664 1856 2160 1200 1201 1204 1250 162000 flags: phsync, pvsync; type: driver
1600x900 60.00 1600 1624 1704 1800 900 901 904 1000 108000 flags: phsync, pvsync; type: driver
1280x1024 75.02 1280 1296 1440 1688 1024 1025 1028 1066 135000 flags: phsync, pvsync; type: driver
1280x1024 60.02 1280 1328 1440 1688 1024 1025 1028 1066 108000 flags: phsync, pvsync; type: driver
1920x1080i 30.00 1920 2008 2052 2200 540 1084 1094 1125 74250 flags: phsync, pvsync, interlace; type: driver
1920x1080i 29.97 1920 2008 2052 2200 540 1084 1094 1125 74176 flags: phsync, pvsync, interlace; type: driver
1920x1080i 25.00 1920 2448 2492 2640 540 1084 1094 1125 74250 flags: phsync, pvsync, interlace; type: driver
1920x1080i 25.00 1920 1952 2120 2304 540 1126 1136 1250 72000 flags: phsync, nvsync, interlace; type: driver
1152x864 75.00 1152 1216 1344 1600 864 865 868 900 108000 flags: phsync, pvsync; type: driver
1280x720 60.00 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver
1280x720 59.94 1280 1390 1430 1650 720 725 730 750 74176 flags: phsync, pvsync; type: driver
1280x720 50.00 1280 1720 1760 1980 720 725 730 750 74250 flags: phsync, pvsync; type: driver
1024x768 75.03 1024 1040 1136 1312 768 769 772 800 78750 flags: phsync, pvsync; type: driver
1024x768 60.00 1024 1048 1184 1344 768 771 777 806 65000 flags: nhsync, nvsync; type: driver
800x600 75.00 800 816 896 1056 600 601 604 625 49500 flags: phsync, pvsync; type: driver
800x600 60.32 800 840 968 1056 600 601 605 628 40000 flags: phsync, pvsync; type: driver
720x576 50.00 720 732 796 864 576 581 586 625 27000 flags: nhsync, nvsync; type: driver
720x576 50.00 720 732 796 864 576 581 586 625 27000 flags: nhsync, nvsync; type: driver
720x480 60.00 720 736 798 858 480 489 495 525 27027 flags: nhsync, nvsync; type: driver
720x480 60.00 720 736 798 858 480 489 495 525 27027 flags: nhsync, nvsync; type: driver
720x480 59.94 720 736 798 858 480 489 495 525 27000 flags: nhsync, nvsync; type: driver
720x480 59.94 720 736 798 858 480 489 495 525 27000 flags: nhsync, nvsync; type: driver
640x480 75.00 640 656 720 840 480 481 484 500 31500 flags: nhsync, nvsync; type: driver
640x480 60.00 640 656 752 800 480 490 492 525 25200 flags: nhsync, nvsync; type: driver
640x480 59.94 640 656 752 800 480 490 492 525 25175 flags: nhsync, nvsync; type: driver
640x480 59.94 640 656 752 800 480 490 492 525 25175 flags: nhsync, nvsync; type: driver
720x400 70.08 720 738 846 900 400 412 414 449 28320 flags: nhsync, pvsync; type: driver
720x576i 50.00 720 732 795 864 288 580 586 625 27000 flags: nhsync, nvsync, interlace, dblclk; type: driver
720x576i 50.00 720 732 795 864 288 580 586 625 27000 flags: nhsync, nvsync, interlace, dblclk; type: driver
720x480i 60.00 720 739 801 858 240 488 494 525 27028 flags: nhsync, nvsync, interlace, dblclk; type: driver
720x480i 60.00 720 739 801 858 240 488 494 525 27028 flags: nhsync, nvsync, interlace, dblclk; type: driver
720x480i 59.94 720 739 801 858 240 488 494 525 27000 flags: nhsync, nvsync, interlace, dblclk; type: driver
720x480i 59.94 720 739 801 858 240 488 494 525 27000 flags: nhsync, nvsync, interlace, dblclk; type: driver
props:
1 EDID:
flags: immutable blob
blobs:
            value:
                    00ffffffffffff0010ac27a14c543830
                    171d0103803d2378eeee95a3544c9926
                    0f5054a54b00714f8180a9c0a940d1c0
                    e1000101010108e80030f2705a80b058
                    8a00615d2100001a000000ff004d5950
                    464b3936323038544c0a000000fc0044
                    454c4c205532373138514d0a000000fd
                    0031560a893c000a2020202020200101
                    02033ef15861605f5e5d100504020716
                    01141f1213272021220306111523091f
                    07830100006d030c0010003044200060
                    03020167d85dc401788001e20f03565e
                    00a0a0a0295030203500615d2100001a
                    04740030f2705a80b0588a00615d2100
                    001ebf1600a08038134030203a00615d
                    2100001a0000000000000000000000a4
    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: 42

CRTCs:
id      fb      pos     size
42      48      (0,0)   (3840x2160)
60.00 3840 4016 4104 4400 2160 2168 2178 2250 594000 flags: phsync, nvsync; type:
props:
22 ACTIVE:
flags: range
values: 0 1
value: 1
23 MODE_ID:
flags: blob
blobs:
            value:
                    50100900000fb00f0810301100007008
                    78088208ca0800000000000009000000
                    00000000000000000000000000000000
                    00000000000000000000000000000000
                    00000000
    19 OUT_FENCE_PTR:
            flags: range
            values: 0 18446744073709551615
            value: 0
    24 VRR_ENABLED:
            flags: range
            values: 0 1
            value: 0

Planes:
id      crtc    fb      CRTC x,y        x,y     gamma size      possible crtcs
33      0       0       0,0             0,0     0               0x00000001
formats: NV12
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
34      0       0       0,0             0,0     0               0x00000001
formats: NV12
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
35      0       0       0,0             0,0     0               0x00000001
formats: NV12
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
36      0       0       0,0             0,0     0               0x00000001
formats: NV12
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
37      0       0       0,0             0,0     0               0x00000001
formats: NV12
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
38      0       0       0,0             0,0     0               0x00000001
formats: NV12
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
39      0       0       0,0             0,0     0               0x00000001
formats: NV12
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
40      42      48      0,0             0,0     0               0x00000001
formats: AR24
props:
8 type:
flags: immutable enum
enums: Overlay=0 Primary=1 Cursor=2
value: 1
17 FB_ID:
flags: object
value: 48
18 IN_FENCE_FD:
flags: signed range
values: -1 2147483647
value: -1
20 CRTC_ID:
flags: object
value: 42
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: 3840
16 CRTC_H:
flags: range
values: 0 2147483647
value: 2160
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: 251658240
12 SRC_H:
flags: range
values: 0 4294967295
value: 141557760
32 alpha:
flags: range
values: 0 256
value: 256
41      0       0       0,0             0,0     0               0x00000001
formats: BG24
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

Frame buffers: id size pitch

5.4.0.1. 使用命令modetest设置分辨率

modetest的Connectors ID与硬件设计相关。根据HDMI-TX设备信息，本设计的Connectors ID是44。对应的modetest命令是“modetest -D a0070000.v_mix -s 41:1920x1080-60@AR24”。执行记录如下。

root@vcu_trd:~# modetest -D a0070000.v_mix -s 44:1920x1080-60@AR24
setting mode 1920x1080-60.00Hz@AR24 on connectors 44, crtc 42

5.4.0.2. 启动Xorg

使用新的配置启动Xorg，需要先杀掉旧的Xorg。

root@vcu_trd:~# ps -A |grep -i xorg
  853 root      0:00 xinit /etc/X11/Xsession -- /usr/bin/Xorg :0 -br -pn
  859 root      0:00 /usr/bin/Xorg :0 -br -pn
 1095 root      0:00 grep -i xorg
root@vcu_trd:~# kill 853

xinit: connection to X server lost
waiting for X server to shut down dbus-daemon[896]: Reloaded configuration
[  696.359949] Warning: Unknown drm_fourcc format code: 875713089
(II) Server terminated successfully (0). Closing log file.
xinit: unexpected signal 15

root@vcu_trd:~# ps -A |grep -i xorg
 1100 root      0:00 grep -i xorg
 
root@vcu_trd:~# Xorg &
[1] 1101
X.Org X Server 1.20.5
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.10.0-693.el7.x86_64 x86_64
Current Operating System: Linux vcu_trd 5.4.0-xilinx-v2020.1 #1 SMP Tue Aug 25 09:25:42 UTC 2020 aarch64
Kernel command line: earlycon clk_ignore_unused consoleblank=0 cma=1700M uio_pdrv_genirq.of_id=generic-uio
Build Date: 26 May 2020  09:01:47PM
Current version of pixman: 0.38.4
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Wed Aug 26 01:53:07 2020
(==) Using config file: "/etc/X11/xorg.conf"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
root@vcu_trd:~# The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning:          Unsupported high keycode 372 for name <I372> ignored
>                   X11 cannot support keycodes above 255.
>                   This warning only shows for the first high keycode.
Errors from xkbcomp are not fatal to the X server

5.5. 运行QT程序

运行QT程序后，HDMI显示器上，能看到六个每面有数字立方体。

root@vcu_trd:~# export DISPLAY=:0.0
root@vcu_trd:~# QT_QPA_PLATFORM=eglfs /usr/share/examples/opengl/textures/textures
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/var/volatile/tmp/runtime-root'
Unable to query physical screen size, defaulting to 100 dpi.
To override, set QT_QPA_EGLFS_PHYSICAL_WIDTH and QT_QPA_EGLFS_PHYSICAL_HEIGHT (in millimeters).
Attribute Qt::AA_ShareOpenGLContexts must be set before QCoreApplication is created.

6. 常见问题

6.1. modetest设置格式失败。

因为primary layer没有使能AR24格式，modetest报告错误“failed to set mode: Function not implemented”。请检查硬件和devicetree。

root@vcu_trd:~# modetest -D a0070000.v_mix -s 44:1920x1080-60@AR24
setting mode 1920x1080-60.00Hz@AR24 on connectors 44, crtc 42
failed to set mode: Function not implemented

6.2. Xorg设置格式失败。

因为primary layer没有使能AR24格式，Xorg报告错误“ERROR: drm failed to set mode: Invalid argument”。请检查硬件和devicetree设置。

root@vcu_trd:~# cat /var/log/Xorg.0.log
[   400.794] (II) ARMSOC(0): Setting swap chain size: 2
[   400.794] (II) ARMSOC(0): [DRI2] Setup complete
[   400.794] (II) ARMSOC(0): [DRI2]   DRI driver: armsoc
[   400.794] (==) ARMSOC(0): Backing store enabled
[   400.794] (==) ARMSOC(0): Silken mouse enabled
[   400.794] (II) ARMSOC(0): HW cursor init()
[   400.794] (EE) ARMSOC(0): ERROR: drm failed to set mode: Invalid argument
[   400.794] (EE) ARMSOC(0): ERROR: xf86SetDesiredModes() failed!
[   400.794] (EE) ARMSOC(0): ERROR: ARMSOCEnterVT() failed!
[   400.800] (EE)
Fatal server error:
[   400.800] (EE) AddScreen/ScreenInit failed for driver 0
[   400.800] (EE)
[   400.800] (EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
[   400.800] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[   400.800] (EE)
[   400.801] (EE) Server terminated with error (1). Closing log file.