From: Akhil P Oommen Date: Tue, 18 Nov 2025 08:50:30 +0000 (+0530) Subject: drm/msm/a6xx: Fix the gemnoc workaround X-Git-Url: https://gentwo.org/gitweb/?a=commitdiff_plain;h=ff7a6de043fce21ea5891311746b16121b385c59;p=linux%2F.git drm/msm/a6xx: Fix the gemnoc workaround Correct the register offset and enable this workaround for all A7x and newer GPUs to match the recommendation. Also, downstream does this w/a after moving the fence to allow mode. So do the same. Fixes: dbfbb376b50c ("drm/msm/a6xx: Add A621 support") Reviewed-by: Konrad Dybcio Signed-off-by: Akhil P Oommen Patchwork: https://patchwork.freedesktop.org/patch/688997/ Message-ID: <20251118-kaana-gpu-support-v4-3-86eeb8e93fb6@oss.qualcomm.com> Signed-off-by: Rob Clark --- diff --git a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c index 72cd4fe0905c..52653ad376fc 100644 --- a/drivers/gpu/drm/msm/adreno/a6xx_gmu.c +++ b/drivers/gpu/drm/msm/adreno/a6xx_gmu.c @@ -511,8 +511,9 @@ static void a6xx_gemnoc_workaround(struct a6xx_gmu *gmu) * in the power down sequence not being fully executed. That in turn can * prevent CX_GDSC from collapsing. Assert Qactive to avoid this. */ - if (adreno_is_a621(adreno_gpu) || adreno_is_7c3(adreno_gpu)) - gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, BIT(0)); + if (adreno_is_a7xx(adreno_gpu) || (adreno_is_a621(adreno_gpu) || + adreno_is_7c3(adreno_gpu))) + gmu_write(gmu, REG_A6XX_GPU_GMU_CX_GMU_CX_FALNEXT_INTF, BIT(0)); } /* Let the GMU know that we are about to go into slumber */ @@ -548,10 +549,9 @@ static int a6xx_gmu_notify_slumber(struct a6xx_gmu *gmu) } out: - a6xx_gemnoc_workaround(gmu); - /* Put fence into allow mode */ gmu_write(gmu, REG_A6XX_GMU_AO_AHB_FENCE_CTRL, 0); + a6xx_gemnoc_workaround(gmu); return ret; }