On Wed, Aug 21, 2019 at 9:08 PM Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> wrote: > > Hello Adam, > > On Wed, Aug 21, 2019 at 08:14:43PM -0500, Adam Ford wrote: > > I know it's been nearly 9 months this this was removed, but for those > > of us who still define our displays in the device tree expecting the > > dpi-panel, we're not getting video. > > > > The commit message only states: > > > > Panels are now supported through the drm_panel infrastructure, remove > > the omapdrm-specific driver. > > > > It does not give examples of how to do this, and I feel like we should > > have been given some warning or indication. Is there an example I can > > follow for linking a dpi panel into the omap DSS? > > Sorry to have left you with non-working systems :-( I have really only been following the omap-linux mailing list and only really focus on the LTS kernels because my employer uses the LTS kernels as the basis for the their linux distributions. If there is a different mailing list I should follow, let me know. I just wish it would have been marked as deprecated or something before just being killed. > > If the panel is supported by a mainline DRM panel driver the change > should be transparent (provided of course that the driver is compiled in > the kernel or as a module). Most panels are supported by the > panel-simple driver (CONFIG_DRM_PANEL_SIMPLE), with a few dozen of other > panels supported by dedicated drivers (in drivers/gpu/drm/panel/) > > Could you point me to the DT sources of one (or all) of the affected > systems ? Sure, The same panel is used on these these two boards: logicpd-som-lv-baseboard.dtsi logicpd-torpedo-37xx-devkit-28.dts A second panel is used on: logicpd-torpedo-37xx-devkit.dts which has the LCD timings defined in logicpd-torpedo-baseboard.dtsi The am3517-evm also uses the same timings, but the gpio enables are different. The da850-evm uses the same panel as the am3517-evm, but it's not using the same video driver, and I haven't had a chance to see if that driver still exists or not. Thanks for your quick response. :-) Sorry if my e-mail came across angrily, it wasn't my intention. adam > -- > Regards, > > Laurent Pinchart
