[PATCH 2/7] dt-bindings: PCI: Describe ATS property for root complex nodes
Jean-Philippe Brucker
jean-philippe.brucker at arm.com
Tue May 30 03:58:50 PDT 2017
On 30/05/17 11:01, Joerg Roedel wrote:
> On Wed, May 24, 2017 at 07:01:38PM +0100, Jean-Philippe Brucker wrote:
>> +- ats-supported: if present, the root complex supports the Address
>> + Translation Service (ATS). It is able to interpret the AT field in PCIe
>> + Transaction Layer Packets, and forward Translation Completions or
>> + Invalidation Requests to endpoints.
>> +
>> + Device drivers should not enable ATS in endpoints unless this property
>> + is present.
>
> Device drivers should never enable ATS, this is the job of the IOMMU
> driver. This should be clarified in the text.
Right, I will change this.
Thanks,
Jean
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