linux-kernel - Re: [Freedreno] [PATCH] drm/msm/a6xx: Correct the highestbank configuration

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Date:   Fri, 24 Jan 2020 07:46:09 -0800
From:   Rob Clark <robdclark@...il.com>
To:     Akhil P Oommen <akhilpo@...eaurora.org>
Cc:     freedreno <freedreno@...ts.freedesktop.org>,
        Sharat Masetty <smasetty@...eaurora.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        Jordan Crouse <jcrouse@...eaurora.org>,
        dri-devel@...edesktop.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [Freedreno] [PATCH] drm/msm/a6xx: Correct the highestbank configuration

On Fri, Jan 24, 2020 at 5:50 AM Akhil P Oommen <akhilpo@...eaurora.org> wrote:
>
> Highest bank bit configuration is different for a618 gpu. Update
> it with the correct configuration which is the reset value incidentally.
>
> Signed-off-by: Akhil P Oommen <akhilpo@...eaurora.org>
> Signed-off-by: Sharat Masetty <smasetty@...eaurora.org>

Thanks, this fixes the UBWC issues on a618

Fixes: e812744c5f95 ("drm: msm: a6xx: Add support for A618")
Reviewed-by: Rob Clark <robdclark@...il.com>

> ---
>  drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 10 ++++++----
>  1 file changed, 6 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> index daf0780..536d196 100644
> --- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> +++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
> @@ -470,10 +470,12 @@ static int a6xx_hw_init(struct msm_gpu *gpu)
>         /* Select CP0 to always count cycles */
>         gpu_write(gpu, REG_A6XX_CP_PERFCTR_CP_SEL_0, PERF_CP_ALWAYS_COUNT);
>
> -       gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
> -       gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
> -       gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
> -       gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
> +       if (adreno_is_a630(adreno_gpu)) {
> +               gpu_write(gpu, REG_A6XX_RB_NC_MODE_CNTL, 2 << 1);
> +               gpu_write(gpu, REG_A6XX_TPL1_NC_MODE_CNTL, 2 << 1);
> +               gpu_write(gpu, REG_A6XX_SP_NC_MODE_CNTL, 2 << 1);
> +               gpu_write(gpu, REG_A6XX_UCHE_MODE_CNTL, 2 << 21);
> +       }
>
>         /* Enable fault detection */
>         gpu_write(gpu, REG_A6XX_RBBM_INTERFACE_HANG_INT_CNTL,
> --
> 2.7.4
> _______________________________________________
> Freedreno mailing list
> Freedreno@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/freedreno

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