linux-kernel - [PATCH v3 03/20] drm/msm/a6xx: Skip dumping SCRATCH registers

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Message-Id: <20251114-kaana-gpu-support-v3-3-92300c7ec8ff@oss.qualcomm.com>
Date: Fri, 14 Nov 2025 04:59:00 +0530
From: Akhil P Oommen <akhilpo@....qualcomm.com>
To: Rob Clark <robin.clark@....qualcomm.com>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konradybcio@...nel.org>, Sean Paul <sean@...rly.run>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Jonathan Marek <jonathan@...ek.ca>,
        Jordan Crouse <jordan@...micpenguin.net>,
        Will Deacon <will@...nel.org>, Robin Murphy <robin.murphy@....com>,
        Joerg Roedel <joro@...tes.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        Connor Abbott <cwabbott0@...il.com>
Cc: linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org, iommu@...ts.linux.dev,
        devicetree@...r.kernel.org, Akhil P Oommen <akhilpo@....qualcomm.com>,
        Rob Clark <rob.clark@....qualcomm.com>
Subject: [PATCH v3 03/20] drm/msm/a6xx: Skip dumping SCRATCH registers

Crashdec doesn't require SCRATCH registers anymore for a6xx and newer
architectures. So skip dumping them during recovery.

Suggested-by: Rob Clark <rob.clark@....qualcomm.com>
Signed-off-by: Akhil P Oommen <akhilpo@....qualcomm.com>
---
 drivers/gpu/drm/msm/adreno/a6xx_gpu.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
index 6f7ed07670b1..0995aa1f7286 100644
--- a/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
+++ b/drivers/gpu/drm/msm/adreno/a6xx_gpu.c
@@ -1546,7 +1546,7 @@ static void a6xx_recover(struct msm_gpu *gpu)
 	struct adreno_gpu *adreno_gpu = to_adreno_gpu(gpu);
 	struct a6xx_gpu *a6xx_gpu = to_a6xx_gpu(adreno_gpu);
 	struct a6xx_gmu *gmu = &a6xx_gpu->gmu;
-	int i, active_submits;
+	int active_submits;
 
 	adreno_dump_info(gpu);
 
@@ -1554,10 +1554,6 @@ static void a6xx_recover(struct msm_gpu *gpu)
 		/* Sometimes crashstate capture is skipped, so SQE should be halted here again */
 		gpu_write(gpu, REG_A6XX_CP_SQE_CNTL, 3);
 
-		for (i = 0; i < 8; i++)
-			DRM_DEV_INFO(&gpu->pdev->dev, "CP_SCRATCH_REG%d: %u\n", i,
-				gpu_read(gpu, REG_A6XX_CP_SCRATCH_REG(i)));
-
 		if (hang_debug)
 			a6xx_dump(gpu);
 

-- 
2.51.0