linux-kernel - Re: [PATCH] drm/msm/adreno: fix a743 and a740 cx mem init

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Date: Wed, 26 Jun 2024 13:15:48 +0100
From: Connor Abbott <cwabbott0@...il.com>
To: Neil Armstrong <neil.armstrong@...aro.org>
Cc: Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>, 
	Konrad Dybcio <konrad.dybcio@...aro.org>, Abhinav Kumar <quic_abhinavk@...cinc.com>, 
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
	Marijn Suijten <marijn.suijten@...ainline.org>, David Airlie <airlied@...il.com>, 
	Daniel Vetter <daniel@...ll.ch>, Rob Clark <robdclark@...omium.org>, linux-arm-msm@...r.kernel.org, 
	dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] drm/msm/adreno: fix a743 and a740 cx mem init

On Wed, Jun 26, 2024 at 1:04 PM Neil Armstrong
<neil.armstrong@...aro.org> wrote:
>
> Disable the call to qcom_scm_gpu_init_regs() for a730 and a740
> after init failures on the HDK8550 and HDK8450 platforms:
> msm_dpu ae01000.display-controller: failed to load adreno gpu
> msm_dpu ae01000.display-controller: failed to bind 3d00000.gpu (ops a3xx_ops [msm]): -5
> msm_dpu ae01000.display-controller: adev bind failed: -5
>
> While debugging, it happens the call to:
> qcom_scm_gpu_init_regs(QCOM_SCM_GPU_ALWAYS_EN_REQ)
> returns -5 and makes the gpu fail to initialize.
>
> Remove the scm call since it's not done downstream either and
> works fine without.
>
> Fixes: 14b27d5df3ea ("drm/msm/a7xx: Initialize a750 "software fuse"")
> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
> ---

Reviewed-by: Connor Abbott <cwabbott0@...il.com>