Re: [PATCH v2 6/7] media: iris: add iris4 specific H265 line buffer calculation

[Dmitry Baryshkov]

On Wed, Mar 04, 2026 at 12:18:58AM +0530, Vikash Garodia wrote:
> 
> On 2/28/2026 1:58 AM, Dmitry Baryshkov wrote:
> > On Fri, Feb 27, 2026 at 07:41:22PM +0530, Vikash Garodia wrote:
> > > The H265 decoder line buffer size calculation for iris4 (VPU4) was
> > > previously reusing the iris3 formula. While this works for most
> > > resolutions, certain configurations require a larger buffer size on
> > > iris4, causing firmware errors during decode. This resolves firmware
> > > failures seen with specific test vectors on kaanapali (iris4), and fixes
> > > the following failing fluster tests
> > > - PICSIZE_C_Bossen_1
> > > - WPP_E_ericsson_MAIN_2
> > 
> > This reminds me of the commit fixing SC7280 support. Should SC7280 or
> > all VPU2.0 platforms also use separate formula?
> > 
> for vpu2, there is already a separate formula

It was more of "do we need separate formulas within vpu2".

> 
> > > 
> > > Co-developed-by: Vishnu Reddy <busanna.reddy@xxxxxxxxxxxxxxxx>
> > > Signed-off-by: Vishnu Reddy <busanna.reddy@xxxxxxxxxxxxxxxx>
> > > Signed-off-by: Vikash Garodia <vikash.garodia@xxxxxxxxxxxxxxxx>
> > > ---
> > >   drivers/media/platform/qcom/iris/iris_vpu_buffer.c | 51 +++++++++++++++++++++-
> > >   1 file changed, 50 insertions(+), 1 deletion(-)
> > > 

-- 
With best wishes
Dmitry