From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Konrad Dybcio <konradybcio@gmail.com>
Cc: DTML <devicetree@vger.kernel.org>,
skrzynka@konradybcio.pl, Will Deacon <will@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
iommu@lists.linux-foundation.org,
Rob Herring <robh+dt@kernel.org>,
John Stultz <john.stultz@linaro.org>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 1/1] iommu/arm-smmu: Implement qcom,skip-init
Date: Thu, 30 Jul 2020 22:48:50 -0700 [thread overview]
Message-ID: <20200731054850.GA20825@builder.lan> (raw)
In-Reply-To: <CAMS8qEVXGddTdbrPwK3NJMx71HH0hoVyqiJG6-g9tiBRMRYZ8w@mail.gmail.com>
On Wed 22 Jul 13:11 PDT 2020, Konrad Dybcio wrote:
> >Is the problem on SDM630 that when you write to SMR/S2CR the device
> >reboots? Or that when you start writing out the context bank
> >configuration that trips the display and the device reboots?
>
> I added some debug prints and the phone hangs after reaching the
> seventh CB (with i=6) at
>
> arm_smmu_cb_write(smmu, i, ARM_SMMU_CB_FSR, ARM_SMMU_FSR_FAULT);
>
> line in arm_smmu_device_reset.
>
Sounds like things are progressing nicely for a while there, presumably
until the next time the display is being refreshed.
Would you be willing to try out the following work in progress:
https://lore.kernel.org/linux-arm-msm/20200717001619.325317-1-bjorn.andersson@linaro.org/
You need to adjust drivers/iommu/arm-smmu-impl.c so that
arm_smmu_impl_init() will invoke qcom_smmu_impl_init() as it spots your
apps smmu.
Regards,
Bjorn
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next prev parent reply other threads:[~2020-07-31 5:52 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-04 12:28 [PATCH 1/1] iommu/arm-smmu: Implement qcom,skip-init Konrad Dybcio
2020-07-04 13:09 ` Will Deacon
2020-07-04 13:20 ` Konrad Dybcio
2020-07-05 3:35 ` Bjorn Andersson
2020-07-21 15:04 ` Konrad Dybcio
2020-07-21 15:44 ` Jordan Crouse
2020-07-21 16:20 ` Konrad Dybcio
2020-07-21 23:56 ` Bjorn Andersson
2020-07-22 20:11 ` Konrad Dybcio
2020-07-31 5:48 ` Bjorn Andersson [this message]
2020-08-03 23:57 ` Konrad Dybcio
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