On 07/20/2016 05:19, Bjorn Helgaas wrote: > On Mon, Jun 13, 2016 at 02:05:26PM -0500, Bjorn Helgaas wrote: >> This is a slightly different proposal for the PTM support Jonathan >> proposed here: >> >> http://lkml.kernel.org/r/1462956446-27361-2-git-send-email-jonathan.yong@xxxxxxxxx >> >> I split this into three pieces mostly for ease in reviewing. They >> could all be squashed: >> >> - Enable PTM in root ports and switches automatically at boot >> - Enable PTM in endpoints when requested by driver >> - Add clock granularity information >> >> I have some open questions about how PTM works on Root Complex >> Integrated Endpoints and whether we should enable it automatically >> even without a driver request. And I probably left out some details >> of the clock granularity computation, so treat this as more of an RFC >> than anything. >> > > Jonathan, any comments? > I don't have any new information on how to configure integrated endpoints. This line: ctrl = PCI_PTM_CTRL_ENABLE | PCI_PTM_CTRL_ROOT; should also set the responder capable bit (7.32.2): If PTM Root Capable is Set, this bit must be Set to 1b. -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
