[PATCH 3/3] RFC: dts: ifc6410: add splash screen carveout

[Emil Velikov]

On 4 March 2015 at 23:19, Rob Clark <robdclark at gmail.com> wrote:
> On Wed, Mar 4, 2015 at 6:10 PM, Emil Velikov <emil.l.velikov at gmail.com> wrote:
>> On 3 March 2015 at 20:04, Rob Clark <robdclark at gmail.com> wrote:
>>> Add a reserved-memory region for bootloader splashscreen, and assign it
>>> to the display device, so that drm/msm can take over the bootloader's
>>> splashscreen.
>>>
>> Hi Rob,
>>
>> Rather silly question - does the bootloader always use/preserve the
>> same amount of memory regardless of the display's resolution & bpp ?
>> If not would this patch work in such cases ?
>>
>
> In most cases, the bootloader puts up a splash screen on built-in lcd
> panel, which sort of makes the problem easier (fixed resolution).  For
> external display, I think you just have to size it for worst-case
> (largest) resolution.
>
> (ofc it is RFC since I was hoping to get comments if anyone has better
> suggestions.. probably should have cc'd more people ;-))
>
I believe that Intel managed to get flicker-free boot. iirc Jess
Barnes was one of the people working on it.
That said I'm not sure how much of their work is applicable in non-x86 land :-\

-Emil