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@xxxxxxxxxxxx > > Cc: devicetree@xxxxxxxxxxxxxxx > > Cc: Kamal Dasu <kdasu.kdev@xxxxxxxxx> > > Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> > > Cc: Rob Herring <robh+dt@xxxxxxxxxx> > > Cc: Stephen Boyd <sboyd@xxxxxxxxxx> > > > > 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
