Re: [PATCH 2/2] drm/pl111: Initial drm/kms driver for pl111

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On Sat, Mar 18, 2017 at 12:09 AM, Russell King - ARM Linux
<linux@xxxxxxxxxxxxxxx> wrote:
> On Fri, Mar 17, 2017 at 03:47:42PM -0700, Eric Anholt wrote:
>> This is a modesetting driver for the pl111 CLCD display controller
>> found on various ARM platforms such as the Versatile Express. The
>> driver has only been tested on the bcm911360_entphn platform so far,
>> with PRIME-based buffer sharing between vc4 and clcd.
>>
>> It reuses the existing devicetree binding, while not using quite as
>> many of its properties as the fbdev driver does (those are left for
>> future work).
>
> As we're multiplatform on ARM, and this is using the PL11x AMBA IDs,
> we must ensure that it's compatible with everything that the fbdev
> driver is compatible with... however, I suspect that's not worth the
> effort (unless Linus W wants it?)

Hm, I certainly want it... but it would be unreasonable of me to expect
Eric to cold-code a big upfront design for systems he can't even test
this on.

What I would request would rather be: please do not put in any
immediate roadblocks and keep it in the back of your head that I will
maybe come in and add support for the PL110 systems once this
works. (Of course that would be with the aim to deprecate and
delete the old fbdev driver in favor of this one.)

I can help with some RealView testing along the way to begin with.

Yours,
Linus Walleij
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