From: Nicolin Chen <nicoleotsuka@gmail.com>
To: Dmitry Osipenko <digetx@gmail.com>
Cc: thierry.reding@gmail.com, joro@8bytes.org, vdumpa@nvidia.com,
jonathanh@nvidia.com, linux-tegra@vger.kernel.org,
iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v5 2/3] iommu/tegra-smmu: Rework tegra_smmu_probe_device()
Date: Sun, 4 Oct 2020 15:04:00 -0700 [thread overview]
Message-ID: <20201004220359.GB21420@Asurada-Nvidia> (raw)
In-Reply-To: <97d69b0b-db32-08ff-0691-73cfa571f974@gmail.com>
On Sat, Oct 03, 2020 at 05:05:52PM +0300, Dmitry Osipenko wrote:
> 03.10.2020 09:59, Nicolin Chen пишет:
> > ubuntu@jetson:~$ dmesg | grep iommu
> > iommu: Default domain type: Translated
> > tegra-i2c 7000c400.i2c: Adding to iommu group 0
> > tegra-i2c 7000c500.i2c: Adding to iommu group 0
> > tegra-i2c 7000d000.i2c: Adding to iommu group 0
> > tegra-pcie 1003000.pcie: Adding to iommu group 1
>
> Could you please explain how you got I2C into IOMMU?
>
> Are you testing vanilla upstream kerne? Upstream DT doesn't assign AHB
> group to I2C controllers, nor to APB DMA controller.
I have local DT changes adding iommus property in i2c/pcie nodes
to test group_device() and pci device, yet neither of them is in
vanilla kernel. The log is merely to show to people the sequence
of iommu core prior to clients.
next prev parent reply other threads:[~2020-10-04 22:10 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-03 6:59 [PATCH v5 0/3] iommu/tegra-smmu: Add PCI support Nicolin Chen
2020-10-03 6:59 ` [PATCH v5 1/3] iommu/tegra-smmu: Use fwspec in tegra_smmu_(de)attach_dev Nicolin Chen
2020-10-03 14:14 ` Dmitry Osipenko
2020-10-03 6:59 ` [PATCH v5 2/3] iommu/tegra-smmu: Rework tegra_smmu_probe_device() Nicolin Chen
2020-10-03 14:05 ` Dmitry Osipenko
2020-10-04 22:04 ` Nicolin Chen [this message]
2020-10-03 14:06 ` Dmitry Osipenko
2020-10-04 21:57 ` Nicolin Chen
2020-10-05 8:41 ` Dmitry Osipenko
2020-10-05 10:56 ` Thierry Reding
2020-10-06 1:14 ` Nicolin Chen
2020-10-03 14:19 ` Dmitry Osipenko
2020-10-03 6:59 ` [PATCH v5 3/3] iommu/tegra-smmu: Add PCI support Nicolin Chen
2020-10-03 14:16 ` Dmitry Osipenko
2020-10-04 22:08 ` Nicolin Chen
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