Hi Geert,
On Mon, Aug 23, 2021 at 02:25:32PM +0200, Geert Uytterhoeven wrote:
On Sun, Aug 22, 2021 at 2:36 AM Laurent Pinchart wrote:
On R-Car D3 and E3, the LVDS encoders provide the pixel clock to the DU, even when LVDS outputs are not used. For this reason, the rcar-lvds driver probes successfully on those platforms even if no further bridge or panel is connected to the LVDS output, in order to provide the rcar_lvds_clk_enable() and rcar_lvds_clk_disable() functions to the DU driver.
If an LVDS output isn't connected, trying to create a DRM connector for the output will fail. Fix this by skipping connector creation in that case, and also skip creation of the DRM encoder as there's no point in an encoder without a connector.
Fixes: e9e056949c92 ("drm: rcar-du: lvds: Convert to DRM panel bridge helper") Reported-by: Geert Uytterhoeven geert@linux-m68k.org
Can you please change that to Reported-by: Geert Uytterhoeven geert+renesas@glider.be ?
Sure thing.
Signed-off-by: Laurent Pinchart laurent.pinchart+renesas@ideasonboard.com
Thanks, the scary warning on Ebisu-4D is gone, so Tested-by: Geert Uytterhoeven geert+renesas@glider.be
Disclaimer: there are no displays connected to my Ebisu-4D.
That's the best way to ensure the absence of display issues. It works great for camera testing too, if you also remove networking and storage :-)