Re: Re: [PATCH v2] drm/rockchip: vop: Support dithering to RGB666

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On Thu, Mar 14, 2019 at 5:20 PM Johan Jonker <jbx6244@xxxxxxxxx> wrote:
>
> How about RK3066? See/use linux-next.
Hi and thanks for the notice. The rest of this mail "addressed" for
anyone interested.

I've added the dither bits for RK3066 - it doesnt have the bit for
Allegro/FRC (sel)
which really isnt a problem, but brought up a question for me:
Should the code avoid calling vop_reg_write with unsupported registers/bits?
I assumed a yes, but based on my tests it already does it on RK3288..
(atleast x/y_mir_en and act_info iirc).

This only results in a "Warning: not support reg_name" print in drm
debug output,
but to me printing warnings during normal operations (even if they're
only in debug output)
seems wrong.

I'll be sending a v3 of the patch after this mail, and i did avoid the
unnecessary
write for now, but i expect to be changing that line of code :P

-- 
Urja Rannikko

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