linux-kernel - Re: [PATCH v2] drm/msm/disp/dpu: fix sc7280

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Date:   Tue, 28 Feb 2023 10:26:12 -0800
From:   Abhinav Kumar <quic_abhinavk@...cinc.com>
To:     Kuogee Hsieh <quic_khsieh@...cinc.com>, <robdclark@...il.com>,
        <sean@...rly.run>, <swboyd@...omium.org>, <dianders@...omium.org>,
        <vkoul@...nel.org>, <daniel@...ll.ch>, <airlied@...il.com>,
        <agross@...nel.org>, <dmitry.baryshkov@...aro.org>,
        <andersson@...nel.org>
CC:     <quic_sbillaka@...cinc.com>, <freedreno@...ts.freedesktop.org>,
        <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] drm/msm/disp/dpu: fix sc7280_pp base offset



On 2/27/2023 1:36 PM, Kuogee Hsieh wrote:
> At sc7280, pingpong block is used to management the dither effects
> to reduce distortion at panel. Currently pingpong-0 base offset is
> wrongly set at 0x59000. This mistake will not cause system to crash.
> However it will make dither not work. This patch correct sc7280 ping
> pong-0 block base offset.
> 
> Changes in v2:
> -- add more details info n regrading of pingpong block at commit text
> 
> Fixes: 591e34a091d1 ("drm/msm/disp/dpu1: add support for display for SC7280 target")
> Signed-off-by: Kuogee Hsieh <quic_khsieh@...cinc.com>

Reviewed-by: Abhinav Kumar <quic_abhinavk@...cinc.com>

> ---
>   drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> index 7deffc9f9..286437e 100644
> --- a/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> +++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_hw_catalog.c
> @@ -1707,7 +1707,7 @@ static const struct dpu_pingpong_cfg sm8350_pp[] = {
>   };
>   
>   static const struct dpu_pingpong_cfg sc7280_pp[] = {
> -	PP_BLK("pingpong_0", PINGPONG_0, 0x59000, 0, sc7280_pp_sblk, -1, -1),
> +	PP_BLK("pingpong_0", PINGPONG_0, 0x69000, 0, sc7280_pp_sblk, -1, -1),
>   	PP_BLK("pingpong_1", PINGPONG_1, 0x6a000, 0, sc7280_pp_sblk, -1, -1),
>   	PP_BLK("pingpong_2", PINGPONG_2, 0x6b000, 0, sc7280_pp_sblk, -1, -1),
>   	PP_BLK("pingpong_3", PINGPONG_3, 0x6c000, 0, sc7280_pp_sblk, -1, -1),