On 08/03/17 15:26, Sinan Kaya wrote: > On 2/27/2017 2:54 PM, Jean-Philippe Brucker wrote: >> + ats_enabled = !arm_smmu_enable_ats(master); >> + > > You should make ats_supported field in IORT table part of the decision > process for when to enable ATS. > Agreed. I will also draft a proposal for adding the ATS property to PCI host controller DT bindings, it seems to be missing. Thanks, Jean-Philippe