linux-kernel - Re: [PATCH v4 4/5] media: qcom: iris: increase H265D_MAX

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Message-ID: <785406b8-0218-a937-eb90-10b7a5f7796a@oss.qualcomm.com>
Date: Tue, 3 Feb 2026 11:36:51 +0530
From: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>,
        Vikash Garodia <vikash.garodia@....qualcomm.com>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Bryan O'Donoghue <bod@...nel.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        cros-qcom-dts-watchers@...omium.org,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley
 <conor+dt@...nel.org>,
        Stanimir Varbanov <stanimir.varbanov@...aro.org>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v4 4/5] media: qcom: iris: increase H265D_MAX_SLICE to fix
 H.265 decoding on SC7280



On 1/31/2026 7:28 PM, Dmitry Baryshkov wrote:
> Follow the commit bfe1326573ff ("venus: Fix for H265 decoding failure.")
> and increase H265D_MAX_SLICE following firmware requirements on that
> platform. Otherwise decoding of the H.265 streams fails withthe
> "insufficient scratch_1 buffer size" from the firmware.
> 
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> ---
>  drivers/media/platform/qcom/iris/iris_vpu_buffer.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/media/platform/qcom/iris/iris_vpu_buffer.h b/drivers/media/platform/qcom/iris/iris_vpu_buffer.h
> index 12640eb5ed8c..8c0d6b7b5de8 100644
> --- a/drivers/media/platform/qcom/iris/iris_vpu_buffer.h
> +++ b/drivers/media/platform/qcom/iris/iris_vpu_buffer.h
> @@ -67,7 +67,7 @@ struct iris_inst;
>  #define SIZE_DOLBY_RPU_METADATA (41 * 1024)
>  #define H264_CABAC_HDR_RATIO_HD_TOT	1
>  #define H264_CABAC_RES_RATIO_HD_TOT	3
> -#define H265D_MAX_SLICE	1200
> +#define H265D_MAX_SLICE	3600
>  #define SIZE_H265D_HW_PIC_T SIZE_H264D_HW_PIC_T
>  #define H265_CABAC_HDR_RATIO_HD_TOT 2
>  #define H265_CABAC_RES_RATIO_HD_TOT 2
> 

Reviewed-by: Dikshita Agarwal <dikshita.agarwal@....qualcomm.com>

Thanks,
Dikshita