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.
