Re: [PATCH v2 0/2] drm/rockchip: dw_hdmi: Add 4k@30 support

[Sascha Hauer <s.hauer@pengutronix.de>]

On Wed, Sep 28, 2022 at 10:39:27AM +0200, Dan Johansen wrote:
> 
> Den 28.09.2022 kl. 10.37 skrev Sascha Hauer:
> > On Tue, Sep 27, 2022 at 07:53:54PM +0200, Dan Johansen wrote:
> > > Den 26.09.2022 kl. 12.30 skrev Michael Riesch:
> > > > Hi Sascha,
> > > > 
> > > > On 9/26/22 10:04, Sascha Hauer wrote:
> > > > > This series adds support for 4k@30 to the rockchip HDMI controller. This
> > > > > has been tested on a rk3568 rock3a board. It should be possible to add
> > > > > 4k@60 support the same way, but it doesn't work for me, so let's add
> > > > > 4k@30 as a first step.
> > > > > 														     Sascha
> > > > > 
> > > > > Changes since v1:
> > > > > - Allow non standard clock rates only on Synopsys phy as suggested by
> > > > >     Robin Murphy
> > > > > 
> > > > > Sascha Hauer (2):
> > > > >     drm/rockchip: dw_hdmi: relax mode_valid hook
> > > > >     drm/rockchip: dw_hdmi: Add support for 4k@30 resolution
> > > > > 
> > > > >    drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 34 ++++++++++++++++-----
> > > > >    1 file changed, 27 insertions(+), 7 deletions(-)
> > > > Thanks for the v2! On a RK3568 EVB1 with a HP 27f 4k monitor
> > > > 
> > > > Tested-by: Michael Riesch <michael.riesch@wolfvision.net>
> > > Sadly this still doesn't give my display out on my 2k monitor. Not even just
> > > 1080p picture like the old current implementation does.
> > By "like the old current implementation" you mean that this patchset
> > introduces a regression for you?
> Yes. What currently in the kernel at least shows as 1080p on my 2K monitor,
> while this patchset turns off the screen.

Which SoC are you testing this on? I assume RK3568, right? Which patch
introduces that regression, the first or the second one?

Sascha

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