Re: [PATCH v2 08/10] drm/simpledrm: Acquire clocks from DT device node

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Hi,

On Thu, Apr 15, 2021 at 09:31:01AM +0200, Thomas Zimmermann wrote:
> Am 08.04.21 um 10:13 schrieb Maxime Ripard:
> > Hi,
> > 
> > On Thu, Mar 18, 2021 at 11:29:19AM +0100, Thomas Zimmermann wrote:
> > > Make sure required hardware clocks are enabled while the firmware
> > > framebuffer is in use.
> > > 
> > > The basic code has been taken from the simplefb driver and adapted
> > > to DRM. Clocks are released automatically via devres helpers.
> > > 
> > > Signed-off-by: Thomas Zimmermann <tzimmermann@xxxxxxx>
> > > Tested-by: nerdopolis <bluescreen_avenger@xxxxxxxxxxx>
> > 
> > Even though it's definitely simpler to review, merging the driver first
> > and then the clocks and regulators will break bisection on the platforms
> > that rely on them
> 
> I'd like to keep the patches separate for now, but can squash patches 6 to 8
> them into one before pushing them. OK?

Yep, that works for me :)

> > 
> > Another thing worth considering is also that both drivers will probe if
> > they are enabled (which is pretty likely), which is not great :)
> > 
> > I guess we should make them mutually exclusive through Kconfig
> 
> We already have several drivers in fbdev and DRM that handle the same
> hardware. We don't do this for any other pair, why bother now?

Yeah, but simplefb/simpledrm are going to be enabled pretty much
everywhere, as opposed to the other drivers that are more specialized.

Maxime

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