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.
