Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies

2020-10-06 Thread Maxime Ripard
Hi Rob, On Tue, Sep 29, 2020 at 02:00:55PM -0500, Rob Herring wrote: > 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,

Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies

2020-10-01 Thread Maxime Ripard
Hi Daniel, On Mon, Sep 28, 2020 at 11:02:11AM +0200, Daniel Vetter wrote: > On Mon, Sep 28, 2020 at 9:06 AM 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, w

Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies

2020-09-29 Thread Rob Herring
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

Re: [PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies

2020-09-28 Thread Daniel Vetter
On Mon, Sep 28, 2020 at 9:06 AM 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 remov

[PATCH 1/2] drm/vc4: hdmi: Disable Wifi Frequencies

2020-09-28 Thread Maxime Ripard
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 Ri