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SubjectRe: [PATCH v5 00/80] drm/vc4: Support BCM2711 Display Pipeline
Hi Hoegeun,

On Mon, Sep 07, 2020 at 08:49:12PM +0900, Hoegeun Kwon wrote:
> On 9/3/20 5:00 PM, Maxime Ripard wrote:
> > Hi everyone,
> >
> > Here's a (pretty long) series to introduce support in the VC4 DRM driver
> > for the display pipeline found in the BCM2711 (and thus the RaspberryPi 4).
> >
> > The main differences are that there's two HDMI controllers and that there's
> > more pixelvalve now. Those pixelvalve come with a mux in the HVS that still
> > have only 3 FIFOs. Both of those differences are breaking a bunch of
> > expectations in the driver, so we first need a good bunch of cleanup and
> > reworks to introduce support for the new controllers.
> >
> > Similarly, the HDMI controller has all its registers shuffled and split in
> > multiple controllers now, so we need a bunch of changes to support this as
> > well.
> >
> > Only the HDMI support is enabled for now (even though the DPI and DSI
> > outputs have been tested too).
> >
> > Let me know if you have any comments
> > Maxime
> >
> > Cc: bcm-kernel-feedback-list@broadcom.com
> > Cc: devicetree@vger.kernel.org
> > Cc: Kamal Dasu <kdasu.kdev@gmail.com>
> > Cc: Philipp Zabel <p.zabel@pengutronix.de>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: Stephen Boyd <sboyd@kernel.org>
> >
> > Changes from v4:
> > - Rebased on top of next-20200828
> > - Collected the various tags
> > - Fixed some issues with 4k support and dual output (thanks Hoegeun!)
>
> Thanks for your v5 patchset.
>
> I tested all patches based on the next-20200812.

Thanks again for testing all the patches

> Everything else is fine, but the dual hdmi modetest doesn't work well in my
> environment...
>
> In my environment, dsi is not connected, I have seen your answer[1].

Can you share a bit more your setup? What monitors are being connected
to each HDMI port? Do you hotplug any?

Maxime

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