Hi Laurent, > Am 24.07.2020 um 03:24 schrieb Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>: > > Hi Nikolaus, > > On Thu, Jul 23, 2020 at 09:03:49AM +0200, H. Nikolaus Schaller wrote: >>> Am 08.07.2020 um 09:52 schrieb H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>: >>>> Am 07.07.2020 um 21:04 schrieb H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>: >>>> >>>> And what I would need to know before I start to write new code is >>>> if is possible to operate a video mipi dsi panel with driver from >>>> gpu/drm/panel together with omapdrm (v5.7 and later). >>> >>> I did a quick test on a 5.7.6 kernel with the sysc fixes as >>> suggested by Tony. >>> >>> Then I overwrote the compatible entry of our display to be >>> orisetech,otm8009a and configured to build the otm8009a panel driver. >>> >>> The panel driver is loaded, but not probed (no call to otm8009a_probe). >>> It is shown in /sys/bus/mipi-dsi/drivers (and lsmod) but not /sys/bus/mipi-dsi/devices. >>> >>> So what should I try next? >> >> Any suggestions if and how it is possible to use a gpu/drm/panel MIPI DSI >> video mode panel with omapdrm (on OMAP5)? > > For the DSI panel to probe, the display driver needs to register a DSI > host with mipi_dsi_host_register(). I see. > omapdrm doesn't do so yet, we need > to integrate Sebastian's "[PATCHv2 00/56] drm/omap: Convert DSI code to > use drm_mipi_dsi and drm_panel" series first. I'll try to review it in > the near future. > >> The problem is that our old omapdrm/display driver is broken since v5.7 and >> an experimental gpu/drm/panel driver does not probe. And I assume that >> omapdrm/display will disappear completely soon. > > Not before Sebastian's series gets integrated. Yes, it is be very important for us since I do not want to find out why the old omapdrm/display driver isn't working any more just to have it rewritten again and moved to gpu/drm/panel within a very short time frame. I would be happy to start the new panel driver and test it with Sebastian's series. AFAIR Sebastian's series doesn't currently apply well to v5.8-rc so it would be nice if there were a work-in-progress repo that is rebased every now and then. BR and thanks, Nikolaus
