[Bug 95207] [SKL] 5k tiled display issues (dual DP)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=95207

--- Comment #17 from Tomas Bzatek <bugs at bzatek.net> ---
(In reply to Dave Airlie from comment #16)
> I've pushed a branch here
> https://cgit.freedesktop.org/~airlied/linux/log/?h=drm-displayid-timings
> 
> git://people.freedesktop.org/~airlied/linux drm-displayid-timings
> 
> This patchset is not tested yet, but it attempts to add the modes from the
> displayid block to at least fix the first problem

Confirming this works fine, all modes are properly detected now. The image
corruption issue remains unchanged as expected.

> [    0.747544] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:42:DP-1] probed modes :
> [    0.747545] [drm:drm_mode_debug_printmodeline] Modeline 72:"3840x2160" 60 533240 3840 3888 3920 4000 2160 2163 2168 2222 0x48 0x9
> [    0.747546] [drm:drm_mode_debug_printmodeline] Modeline 59:"2560x1440" 60 241500 2560 2608 2640 2720 1440 1443 1448 1481 0x48 0x9
> [    0.747547] [drm:drm_mode_debug_printmodeline] Modeline 60:"3840x2160" 60 533250 3840 3920 3952 4000 2160 2214 2219 2222 0x40 0xa
> [    0.747548] [drm:drm_mode_debug_printmodeline] Modeline 74:"2560x2880" 60 483240 2560 2608 2640 2720 2880 2883 2893 2962 0x40 0x9
> [    0.747549] [drm:drm_mode_debug_printmodeline] Modeline 73:"2560x2880" 30 238240 2560 2608 2640 2720 2880 2883 2893 2921 0x40 0x9
> [    0.747550] [drm:drm_mode_debug_printmodeline] Modeline 64:"1920x1200" 60 193250 1920 2056 2256 2592 1200 1203 1209 1245 0x40 0x6
> [    0.747551] [drm:drm_mode_debug_printmodeline] Modeline 67:"1920x1080" 60 148500 1920 2008 2052 2200 1080 1084 1089 1125 0x40 0xa
> [    0.747552] [drm:drm_mode_debug_printmodeline] Modeline 65:"1600x1200" 60 162000 1600 1664 1856 2160 1200 1201 1204 1250 0x40 0x5
> [    0.747553] [drm:drm_mode_debug_printmodeline] Modeline 63:"1680x1050" 60 146250 1680 1784 1960 2240 1050 1053 1059 1089 0x40 0x6
> [    0.747554] [drm:drm_mode_debug_printmodeline] Modeline 66:"1280x1024" 60 108000 1280 1328 1440 1688 1024 1025 1028 1066 0x40 0x5
> [    0.747555] [drm:drm_mode_debug_printmodeline] Modeline 62:"1280x800" 60 83500 1280 1352 1480 1680 800 803 809 831 0x40 0x6
> [    0.747556] [drm:drm_mode_debug_printmodeline] Modeline 70:"1024x768" 60 65000 1024 1048 1184 1344 768 771 777 806 0x40 0xa
> [    0.747557] [drm:drm_mode_debug_printmodeline] Modeline 68:"800x600" 60 40000 800 840 968 1056 600 601 605 628 0x40 0x5
> [    0.747558] [drm:drm_mode_debug_printmodeline] Modeline 69:"640x480" 60 25200 640 656 752 800 480 490 492 525 0x40 0xa
> [    0.747559] [drm:drm_mode_debug_printmodeline] Modeline 71:"640x480" 60 25175 640 656 752 800 480 490 492 525 0x40 0xa

> [    0.759326] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:48:DP-2] probed modes :
> [    0.759327] [drm:drm_mode_debug_printmodeline] Modeline 75:"848x480" 60 29750 848 896 928 1008 480 483 488 494 0x48 0x9
> [    0.759329] [drm:drm_mode_debug_printmodeline] Modeline 77:"2560x2880" 60 483240 2560 2608 2640 2720 2880 2883 2893 2962 0x40 0x9
> [    0.759339] [drm:drm_mode_debug_printmodeline] Modeline 76:"2560x2880" 30 238240 2560 2608 2640 2720 2880 2883 2893 2921 0x40 0x9

(the 3840x2160 mode is listed twice since the panel itself reports slightly
different timings in DisplayID vs. EDID)

Thanks Dave!

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