On 11/11/2020 09:48, H. Nikolaus Schaller wrote: > >> Am 11.11.2020 um 07:40 schrieb Tomi Valkeinen <tomi.valkeinen@xxxxxx>: >> >> On 10/11/2020 23:04, H. Nikolaus Schaller wrote: >>> >>>> Am 10.11.2020 um 17:52 schrieb Tomi Valkeinen <tomi.valkeinen@xxxxxx>: >>>> >>>> On 10/11/2020 18:49, H. Nikolaus Schaller wrote: >>>> >>>> I guess you have the same issue. It goes to dsi_bridge_mode_valid, then __dsi_calc_config, and stays >>>> there finding good clocks. >>> >> >> drm_display_mode.clock is in kHz, but the panel driver writes Hz (w677l_PIXELCLOCK) to it. > > Ok, fixing this removes the stuck thread issue. Thanks for pointing this out! > >> But >> there's more after fixing that. The DSI gets configured in bridge's modeset, which I think is before >> w677l_prepare where the panel already sends DSI commands. Also, the dsi driver fails to lock the >> PLL, so possibly the clock calcs are still wrong. > > What I now get is > > [ 131.035006] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CRTC:55:crtc-0] flip_done timed out > [ 141.272174] [drm:drm_atomic_helper_wait_for_dependencies [drm_kms_helper]] *ERROR* [CONNECTOR:54:DSI-1] flip_done timed out > > I think for further experiments we could hack the device tree to compatible = "orisetech,otm8009a"; > and configure for panel-orisetech-otm8009a.ko. Since this panel driver is known to work elsewhere > we could exclude panel driver issues for the moment. To be safe we can modify otm8009a_dcs_write_buf() > to just print what it would be doing. I pushed some quick fixes/hacks to: git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux.git 5.11/dsi At least I get the DSI PLL configured, and kmstest --flip works with 60 fps. I'm pretty sure the panel won't work yet, though. Tomi -- Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki
