Re: [PATCH v2 for 5.4 2/4] media: hantro: Fix H264 max frmsize supported on RK3288

[Tomasz Figa]

On Wed, Oct 9, 2019 at 5:39 AM Jonas Karlman <jonas@xxxxxxxxx> wrote:
>
> On 2019-10-08 16:12, Jonas Karlman wrote:
> > On 2019-10-08 15:53, Tomasz Figa wrote:
> >> On Tue, Oct 8, 2019 at 10:35 PM Tomasz Figa <tfiga@xxxxxxxxxxxx> wrote:
> >>> On Tue, Oct 8, 2019 at 7:42 PM Tomasz Figa <tfiga@xxxxxxxxxxxx> wrote:
> >>>> On Tue, Oct 8, 2019 at 3:31 PM Jonas Karlman <jonas@xxxxxxxxx> wrote:
> >>>>> On 2019-10-08 07:27, Tomasz Figa wrote:
> >>>>>> Hi Ezequiel, Jonas,
> >>>>>>
> >>>>>> On Tue, Oct 8, 2019 at 2:46 AM Ezequiel Garcia <ezequiel@xxxxxxxxxxxxx> wrote:
> >>>>>>> From: Jonas Karlman <jonas@xxxxxxxxx>
> >>>>>>>
> >>>>>>> TRM specify supported image size 48x48 to 4096x2304 at step size 16 pixels,
> >>>>>>> change frmsize max_width/max_height to match TRM.
> >>>>>>>
> >>>>>>> Fixes: 760327930e10 ("media: hantro: Enable H264 decoding on rk3288")
> >>>>>>> Signed-off-by: Jonas Karlman <jonas@xxxxxxxxx>
> >>>>>>> ---
> >>>>>>> v2:
> >>>>>>> * No changes.
> >>>>>>>
> >>>>>>>  drivers/staging/media/hantro/rk3288_vpu_hw.c | 4 ++--
> >>>>>>>  1 file changed, 2 insertions(+), 2 deletions(-)
> >>>>>>>
> >>>>>>> diff --git a/drivers/staging/media/hantro/rk3288_vpu_hw.c b/drivers/staging/media/hantro/rk3288_vpu_hw.c
> >>>>>>> index 6bfcc47d1e58..ebb017b8a334 100644
> >>>>>>> --- a/drivers/staging/media/hantro/rk3288_vpu_hw.c
> >>>>>>> +++ b/drivers/staging/media/hantro/rk3288_vpu_hw.c
> >>>>>>> @@ -67,10 +67,10 @@ static const struct hantro_fmt rk3288_vpu_dec_fmts[] = {
> >>>>>>>                 .max_depth = 2,
> >>>>>>>                 .frmsize = {
> >>>>>>>                         .min_width = 48,
> >>>>>>> -                       .max_width = 3840,
> >>>>>>> +                       .max_width = 4096,
> >>>>>>>                         .step_width = H264_MB_DIM,
> >>>>>>>                         .min_height = 48,
> >>>>>>> -                       .max_height = 2160,
> >>>>>>> +                       .max_height = 2304,
> >>>>>> This doesn't match the datasheet I have, which is RK3288 Datasheet Rev
> >>>>>> 1.4 and which has the values as in current code. What's the one you
> >>>>>> got the values from?
> >>>>> The RK3288 TRM vcodec chapter from [1], unknown revision and date, lists 48x48 to 4096x2304 step size 16 pixels under 25.5.1 H.264 decoder.
> >>>>>
> >>>>> I can also confirm that one of my test samples (PUPPIES BATH IN 4K) is 4096x2304 and can be decoded after this patch.
> >>>>> However the decoding speed is not optimal at 400Mhz, if I recall correctly you need to set the VPU1 clock to 600Mhz for 4K decoding on RK3288.
> >>>>>
> >>>>> I am not sure if I should include a v2 of this patch in my v2 series, as-is this patch do not apply on master (H264_MB_DIM has changed to MB_DIM in master).
> >>>>>
> >>>>> [1] http://www.t-firefly.com/download/firefly-rk3288/docs/TRM/rk3288-chapter-25-video-encoder-decoder-unit-(vcodec).pdf
> >>>> I checked the RK3288 TRM V1.1 too and it refers to 3840x2160@24fps as
> >>>> the maximum.
> >>>>
> >>>> As for performance, we've actually been getting around 33 fps at 400
> >>>> MHz with 3840x2160 on our devices (the old RK3288 Asus Chromebook
> >>>> Flip).
> >>>>
> >>>> I guess we might want to check that with Hantro.
> >>> Could you check the value of bits 10:0 in register at 0x0c8? That
> >>> should be the maximum supported stream width in the units of 16
> >>> pixels.
> >> Correction: The unit is 1 pixel and there are additional 2 most
> >> significant bits at 0x0d8, 15:14.
> > I will check this later tonight when I have access to my devices.
>
> My Asus Tinker Board S (RK3288-C) is reporting support for 0x780 / 1920 pixels:
>
> 0x000  (0) = 0x67313688
> 0x0c8 (50) = 0xfbb56f80
> 0x0d8 (54) = 0xe5da0000
>

Looks like that register doesn't work very well in Rockchip's
implementation... Thanks for checking anyway.

I guess we can allow 4096x2304 for the time being and see what happens.

Reviewed-by: Tomasz Figa <tfiga@xxxxxxxxxxxx>

Best regards,
Tomasz