Hi
I have custom board based on EVM. There is a problem with HDMI running SDK 06.00.00.07. The Output resolution is not FullHD. I also get some errors when trying to run PowerVR Demos.
root@am57xx-evm:~# dmesg | grep HDMI [ 2.811815] omapdss error: HDMI I2C Master Error [ 3.918656] omapdss error: HDMI I2C Master Error [ 19.029378] omapdss error: HDMI I2C Master Error
Here is the output of the modetest command:
root@am57xx-evm:~# modetest
trying to open device 'i915'...failed
trying to open device 'amdgpu'...failed
trying to open device[ 80.992458] omapdss error: HDMI I2C Master Error
'radeon'...failed
trying to open device 'nouveau'...failed
trying to open device 'vmwgfx'...failed
trying to open device 'omapdrm'...done
Encoders:
id crtc type possible crtcs possible clones
53 56 TMDS 0x00000001 0x00000000
54 58 TMDS 0x00000002 0x00000000
Connectors:
id encoder status name size (mm) modes encoders
55 53 connected DPI-1 152x91 1 53
modes:
name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
800x480 60 800 1010 1040 1056 480 502 515 525 33000 flags: nhsync, nvsync; 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
19 CRTC_ID:
flags: object
value: 56
57 54 connected HDMI-A-1 0x0 5 54
modes:
name refresh (Hz) hdisp hss hse htot vdisp vss vse vtot)
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
848x480 60 848 864 976 1088 480 486 494 517 33750 flags: phsync, pvsync; 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:
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
19 CRTC_ID:
flags: object
value: 58
And this is schematic based on the EVM (Resistors marked with DNP have not been populated as EVM):
