On Fri, Sep 25, 2020 at 03:07:43PM +0200, Maxime Ripard wrote: > There's cross-talk on the RPi4 between the 2.4GHz channels used by the WiFi > chip and some resolutions, most notably 1440p at 60Hz. > > In such a case, we can either reject entirely the mode, or lower slightly > the pixel frequency to remove the overlap. Let's go for the latter. > > Signed-off-by: Maxime Ripard <maxime@xxxxxxxxxx> > --- > .../bindings/display/brcm,bcm2711-hdmi.yaml | 6 ++++++ > drivers/gpu/drm/vc4/vc4_hdmi.c | 14 +++++++++++++- > drivers/gpu/drm/vc4/vc4_hdmi.h | 8 ++++++++ > 3 files changed, 27 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml > index 03a76729d26c..63e7fe999c0a 100644 > --- a/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml > +++ b/Documentation/devicetree/bindings/display/brcm,bcm2711-hdmi.yaml > @@ -76,6 +76,12 @@ properties: > resets: > maxItems: 1 > > + raspberrypi,disable-wifi-frequencies: > + type: boolean > + description: > > + Should the pixel frequencies in the WiFi frequencies range be > + avoided? Based on googling the issue, perhaps should be a common property?
