[参考译文] PROCESSOR-SDK-AM62A：如何设置不同的显示分辨率？

您好！

您能解释一下您的用例吗？ 另外、请参阅以下内容： software-dl.ti.com/.../DSS7.html

此致、
Krunal

尊敬的 Krunal：

Unknown 说：

您能解释一下您的用例吗？

我有带 DPI 的定制硬件-> ADV7511 HDMI 发送器-> micro HDMI 端口

在 自定义硬件中、即使连接的显示器可支持高达1920x1080、 CRTC 仍以1024x768的分辨率显示。 输出如下：

root@am62axx-evm:~# kmsprint
Connector 0 (40) HDMI-A-1 (connected)
  Encoder 0 (39) NONE
    Crtc 0 (38) 1024x768@60.00 65.000 1024/24/136/160/- 768/3/6/29/- 60 (60.00) 0xa 0x40
      Plane 0 (31) fb-id: 48 (crtcs: 0) 0,0 1024x768 -> 0,0 1024x768 (AR12 AB12 RA12 RG16 BG16 AR15 AB15 AR24 AB24 RA24 BA24 RG24 BG24 AR30 AB30 XR12 XB12 RX12 XR15 XB15 XR24 XB24 RX24 BX24 XR30 XB30 YUYV UYVY NV12)
        FB 48 1024x768
root@am62axx-evm:~# modetest -M tidss
Encoders:
id	crtc	type	possible crtcs	possible clones	
39	38	none	0x00000001	0x00000001

Connectors:
id	encoder	status		name		size (mm)	modes	encoders
40	39	connected	HDMI-A-1       	480x270		30	39
  modes:
	index name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot
  #0 1920x1080 60.00 1920 2008 2052 2200 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: preferred, driver
  #1 1920x1080 59.94 1920 2008 2052 2200 1080 1084 1089 1125 148352 flags: phsync, pvsync; type: driver
  #2 1920x1080 50.00 1920 2448 2492 2640 1080 1084 1089 1125 148500 flags: phsync, pvsync; type: driver
  #3 1680x1050 59.88 1680 1728 1760 1840 1050 1053 1059 1080 119000 flags: phsync, nvsync; type: driver
  #4 1600x900 60.00 1600 1624 1704 1800 900 901 904 1000 108000 flags: phsync, pvsync; type: driver
  #5 1280x1024 75.02 1280 1296 1440 1688 1024 1025 1028 1066 135000 flags: phsync, pvsync; type: driver
  #6 1280x1024 60.02 1280 1328 1440 1688 1024 1025 1028 1066 108000 flags: phsync, pvsync; type: driver
  #7 1440x900 59.90 1440 1488 1520 1600 900 903 909 926 88750 flags: phsync, nvsync; type: driver
  #8 1280x800 59.91 1280 1328 1360 1440 800 803 809 823 71000 flags: phsync, nvsync; type: driver
  #9 1152x864 75.00 1152 1216 1344 1600 864 865 868 900 108000 flags: phsync, pvsync; type: driver
  #10 1280x720 60.00 1280 1390 1430 1650 720 725 730 750 74250 flags: phsync, pvsync; type: driver
  #11 1280x720 59.94 1280 1390 1430 1650 720 725 730 750 74176 flags: phsync, pvsync; type: driver
  #12 1280x720 50.00 1280 1720 1760 1980 720 725 730 750 74250 flags: phsync, pvsync; type: driver
  #13 1024x768 75.03 1024 1040 1136 1312 768 769 772 800 78750 flags: phsync, pvsync; type: driver
  #14 1024x768 70.07 1024 1048 1184 1328 768 771 777 806 75000 flags: nhsync, nvsync; type: driver
  #15 1024x768 60.00 1024 1048 1184 1344 768 771 777 806 65000 flags: nhsync, nvsync; type: driver
  #16 832x624 74.55 832 864 928 1152 624 625 628 667 57284 flags: nhsync, nvsync; type: driver
  #17 800x600 75.00 800 816 896 1056 600 601 604 625 49500 flags: phsync, pvsync; type: driver
  #18 800x600 72.19 800 856 976 1040 600 637 643 666 50000 flags: phsync, pvsync; type: driver
  #19 800x600 60.32 800 840 968 1056 600 601 605 628 40000 flags: phsync, pvsync; type: driver
  #20 800x600 56.25 800 824 896 1024 600 601 603 625 36000 flags: phsync, pvsync; type: driver
  #21 720x576 50.00 720 732 796 864 576 581 586 625 27000 flags: nhsync, nvsync; type: driver
  #22 720x480 60.00 720 736 798 858 480 489 495 525 27027 flags: nhsync, nvsync; type: driver
  #23 720x480 59.94 720 736 798 858 480 489 495 525 27000 flags: nhsync, nvsync; type: driver
  #24 640x480 75.00 640 656 720 840 480 481 484 500 31500 flags: nhsync, nvsync; type: driver
  #25 640x480 72.81 640 664 704 832 480 489 492 520 31500 flags: nhsync, nvsync; type: driver
  #26 640x480 66.67 640 704 768 864 480 483 486 525 30240 flags: nhsync, nvsync; type: driver
  #27 640x480 60.00 640 656 752 800 480 490 492 525 25200 flags: nhsync, nvsync; type: driver
  #28 640x480 59.94 640 656 752 800 480 490 492 525 25175 flags: nhsync, nvsync; type: driver
  #29 720x400 70.08 720 738 846 900 400 412 414 449 28320 flags: nhsync, pvsync; type: driver
  props:
	1 EDID:
		flags: immutable blob
		blobs:

		value:
			00ffffffffffff004c2d1a0d35525a5a
			211b010380301b782a5295a556549d25
			0e5054bfef80714f81c0810081809500
			a9c0b3000101023a801871382d40582c
			4500dd0c1100001e000000fd00324b1e
			5111000a202020202020000000fc0053
			3232463335300a2020202020000000ff
			004834544a3830313230370a20200110
			020311b14690041f13120365030c0010
			00011d00bc52d01e20b8285540dd0c11
			00001e8c0ad090204031200c405500dd
			0c110000188c0ad08a20e02d10103e96
			00dd0c11000018000000000000000000
			00000000000000000000000000000000
			00000000000000000000000000000000
			00000000000000000000000000000050
	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:

CRTCs:
id	fb	pos	size
38	48	(0,0)	(1024x768)
  #0 1024x768 60.00 1024 1048 1184 1344 768 771 777 806 65000 flags: nhsync, nvsync; type: driver
  props:
	24 VRR_ENABLED:
		flags: range
		values: 0 1
		value: 0
	27 CTM:
		flags: blob
		blobs:

		value:
	28 GAMMA_LUT:
		flags: blob
		blobs:

		value:
	29 GAMMA_LUT_SIZE:
		flags: immutable range
		values: 0 4294967295
		value: 256

Planes:
id	crtc	fb	CRTC x,y	x,y	gamma size	possible crtcs
31	38	48	0,0		0,0	0       	0x00000001
  formats: AR12 AB12 RA12 RG16 BG16 AR15 AB15 AR24 AB24 RA24 BA24 RG24 BG24 AR30 AB30 XR12 XB12 RX12 XR15 XB15 XR24 XB24 RX24 BX24 XR30 XB30 YUYV UYVY NV12
  props:
	8 type:
		flags: immutable enum
		enums: Overlay=0 Primary=1 Cursor=2
		value: 1
	30 IN_FORMATS:
		flags: immutable blob
		blobs:

		value:
			01000000000000001d00000018000000
			01000000900000004152313241423132
			52413132524731364247313641523135
			41423135415232344142323452413234
			42413234524732344247323441523330
			41423330585231325842313252583132
			58523135584231355852323458423234
			52583234425832345852333058423330
			59555956555956594e56313200000000
			ffffff1f000000000000000000000000
			0000000000000000
		in_formats blob decoded:
			 AR12:  LINEAR
			 AB12:  LINEAR
			 RA12:  LINEAR
			 RG16:  LINEAR
			 BG16:  LINEAR
			 AR15:  LINEAR
			 AB15:  LINEAR
			 AR24:  LINEAR
			 AB24:  LINEAR
			 RA24:  LINEAR
			 BA24:  LINEAR
			 RG24:  LINEAR
			 BG24:  LINEAR
			 AR30:  LINEAR
			 AB30:  LINEAR
			 XR12:  LINEAR
			 XB12:  LINEAR
			 RX12:  LINEAR
			 XR15:  LINEAR
			 XB15:  LINEAR
			 XR24:  LINEAR
			 XB24:  LINEAR
			 RX24:  LINEAR
			 BX24:  LINEAR
			 XR30:  LINEAR
			 XB30:  LINEAR
			 YUYV:  LINEAR
			 UYVY:  LINEAR
			 NV12:  LINEAR
	33 zpos:
		flags: range
		values: 0 1
		value: 0
	34 COLOR_ENCODING:
		flags: enum
		enums: ITU-R BT.601 YCbCr=0 ITU-R BT.709 YCbCr=1
		value: 0
	35 COLOR_RANGE:
		flags: enum
		enums: YCbCr limited range=0 YCbCr full range=1
		value: 1
	36 alpha:
		flags: range
		values: 0 65535
		value: 65535
	37 pixel blend mode:
		flags: enum
		enums: Pre-multiplied=0 Coverage=1
		value: 0
41	0	0	0,0		0,0	0       	0x00000001
  formats: AR12 AB12 RA12 RG16 BG16 AR15 AB15 AR24 AB24 RA24 BA24 RG24 BG24 AR30 AB30 XR12 XB12 RX12 XR15 XB15 XR24 XB24 RX24 BX24 XR30 XB30 YUYV UYVY NV12
  props:
	8 type:
		flags: immutable enum
		enums: Overlay=0 Primary=1 Cursor=2
		value: 0
	30 IN_FORMATS:
		flags: immutable blob
		blobs:

		value:
			01000000000000001d00000018000000
			01000000900000004152313241423132
			52413132524731364247313641523135
			41423135415232344142323452413234
			42413234524732344247323441523330
			41423330585231325842313252583132
			58523135584231355852323458423234
			52583234425832345852333058423330
			59555956555956594e56313200000000
			ffffff1f000000000000000000000000
			0000000000000000
		in_formats blob decoded:
			 AR12:  LINEAR
			 AB12:  LINEAR
			 RA12:  LINEAR
			 RG16:  LINEAR
			 BG16:  LINEAR
			 AR15:  LINEAR
			 AB15:  LINEAR
			 AR24:  LINEAR
			 AB24:  LINEAR
			 RA24:  LINEAR
			 BA24:  LINEAR
			 RG24:  LINEAR
			 BG24:  LINEAR
			 AR30:  LINEAR
			 AB30:  LINEAR
			 XR12:  LINEAR
			 XB12:  LINEAR
			 RX12:  LINEAR
			 XR15:  LINEAR
			 XB15:  LINEAR
			 XR24:  LINEAR
			 XB24:  LINEAR
			 RX24:  LINEAR
			 BX24:  LINEAR
			 XR30:  LINEAR
			 XB30:  LINEAR
			 YUYV:  LINEAR
			 UYVY:  LINEAR
			 NV12:  LINEAR
	43 zpos:
		flags: range
		values: 0 1
		value: 0
	44 COLOR_ENCODING:
		flags: enum
		enums: ITU-R BT.601 YCbCr=0 ITU-R BT.709 YCbCr=1
		value: 0
	45 COLOR_RANGE:
		flags: enum
		enums: YCbCr limited range=0 YCbCr full range=1
		value: 1
	46 alpha:
		flags: range
		values: 0 65535
		value: 65535
	47 pixel blend mode:
		flags: enum
		enums: Pre-multiplied=0 Coverage=1
		value: 0

Frame buffers:
id	size	pitch

root@am62axx-evm:~# 

评估板正在协商最高分辨率。  那么、首先我尝试在评估板中更改较低的分辨率。 如果我可以在评估板中更改分辨率、我可以在定制板中尝试相同的方法。 我没有正确的 方法更改分辨率。

尊敬的 Sathiya：

您可以使用以下命令更改显示分辨率：

 -对于非 Weston 应用程序,在 U-Boot 提示符处执行以下操作:   

setenv optargs video=HDMI-A-1:1024x768

 -对于 Weston 应用, 在新的"输出"部分中将 HDMI-A 配置添加到/etc/xdg/weston/weston.ini 中,如下所示:   

[output]
name=HDMI-A-1
mode=1024x768

此致

Divyansh

尊敬的 Diyansh：

我正在寻找运行时更改。