Re: [PATCH 6/8] drm/msm/dp: Add maximum width limitation for modes

[Xiangxu Yin <quic_xiangxuy@xxxxxxxxxxx>]

On 12/2/2024 5:32 PM, Dmitry Baryshkov wrote:
> On Mon, 2 Dec 2024 at 11:05, Xiangxu Yin <quic_xiangxuy@xxxxxxxxxxx> wrote:
>>
>>
>>
>> On 11/29/2024 9:52 PM, Dmitry Baryshkov wrote:
>>> On Fri, 29 Nov 2024 at 09:59, Xiangxu Yin <quic_xiangxuy@xxxxxxxxxxx> wrote:
>>>>
>>>> Introduce a maximum width constraint for modes during validation. This
>>>> ensures that the modes are filtered based on hardware capabilities,
>>>> specifically addressing the line buffer limitations of individual pipes.
>>>
>>> This doesn't describe, why this is necessary. What does "buffer
>>> limitations of individual pipes" mean?
>>> If the platforms have hw capabilities like being unable to support 8k
>>> or 10k, it should go to platform data
>>>
>> It's SSPP line buffer limitation for this platform and only support to 2160 mode width.
>> Then, shall I add max_width config to struct msm_dp_desc in next patch? for other platform will set defualt value to ‘DP_MAX_WIDTH 7680'
> 
> SSPP line buffer limitations are to be handled in the DPU driver. The
> DP driver shouldn't care about those.
> 
Ok, Will drop this part in next patch.
>>>>
>>>> Signed-off-by: Xiangxu Yin <quic_xiangxuy@xxxxxxxxxxx>
>>>> ---
>>>>  drivers/gpu/drm/msm/dp/dp_display.c |  3 +++
>>>>  drivers/gpu/drm/msm/dp/dp_display.h |  1 +
>>>>  drivers/gpu/drm/msm/dp/dp_panel.c   | 13 +++++++++++++
>>>>  drivers/gpu/drm/msm/dp/dp_panel.h   |  1 +
>>>>  4 files changed, 18 insertions(+)
> 
>