From: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
To: Marijn Suijten <marijn.suijten@somainline.org>,
Abel Vesa <abel.vesa@oss.qualcomm.com>
Cc: Rob Clark <robin.clark@oss.qualcomm.com>,
Dmitry Baryshkov <lumag@kernel.org>,
Abhinav Kumar <abhinav.kumar@linux.dev>,
Jessica Zhang <jesszhan0024@gmail.com>,
Sean Paul <sean@poorly.run>, David Airlie <airlied@gmail.com>,
Simona Vetter <simona@ffwll.ch>, Jun Nie <jun.nie@linaro.org>,
linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] Revert "drm/msm/dpu: support plane splitting in quad-pipe case"
Date: Mon, 22 Dec 2025 10:26:34 +0100 [thread overview]
Message-ID: <b6ecada9-c3be-4c94-bba6-be16f253f151@oss.qualcomm.com> (raw)
In-Reply-To: <aUWqtbpldOG-dqIy@SoMainline.org>
On 12/19/25 8:55 PM, Marijn Suijten wrote:
> On 2025-12-19 12:39:01, Abel Vesa wrote:
>> This reverts commit 5978864e34b66bdae4d7613834c03dd5d0a0c891.
>>
>> At least on Hamoa based devices, there are IOMMU faults:
>>
>> arm-smmu 15000000.iommu: Unhandled context fault: fsr=0x402, iova=0x00000000, fsynr=0x3d0023, cbfrsynra=0x1c00, cb=13
>> arm-smmu 15000000.iommu: FSR = 00000402 [Format=2 TF], SID=0x1c00
>> arm-smmu 15000000.iommu: FSYNR0 = 003d0023 [S1CBNDX=61 PNU PLVL=3]
>
> I thought that this was normal, and that I was always seeing these on startup
> (something to do with framebuffer), but indeed by reverting this patch these
> are gone on at least the Xperia XZ2 (regular CMD-mode panel) and XZ3 (CMD-mode
> panel, 2:2:1 DSC-merge topology), both sdm845-based phones.
This is very close to what you've seen, but note this one comes with
iova = 0, meaning we're likely passing some garbage somewhere
Konrad
next prev parent reply other threads:[~2025-12-22 9:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-19 10:39 [PATCH 0/2] drm/msm/dpu: Revert broken parts of the quad pipe support Abel Vesa
2025-12-19 10:39 ` [PATCH 1/2] Revert "drm/msm/dpu: support plane splitting in quad-pipe case" Abel Vesa
2025-12-19 19:55 ` Marijn Suijten
2025-12-22 9:26 ` Konrad Dybcio [this message]
2025-12-20 16:40 ` Dmitry Baryshkov
2025-12-30 14:32 ` Jun Nie
2025-12-19 10:39 ` [PATCH 2/2] Revert "drm/msm/dpu: Enable quad-pipe for DSC and dual-DSI case" Abel Vesa
2025-12-19 10:49 ` Marijn Suijten
2025-12-20 16:41 ` Dmitry Baryshkov
2025-12-24 9:27 ` [PATCH 0/2] drm/msm/dpu: Revert broken parts of the quad pipe support Dmitry Baryshkov
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