From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.136]:48302 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751239AbcEHCiZ (ORCPT ); Sat, 7 May 2016 22:38:25 -0400 Date: Sat, 7 May 2016 21:38:21 -0500 From: Bjorn Helgaas To: "Yong, Jonathan" Cc: linux-pci@vger.kernel.org, bhelgaas@google.com Subject: Re: [PATCH] PCI: PTM preliminary implementation Message-ID: <20160508023821.GA13531@localhost> References: <1461047358-4736-1-git-send-email-jonathan.yong@intel.com> <1461047358-4736-2-git-send-email-jonathan.yong@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1461047358-4736-2-git-send-email-jonathan.yong@intel.com> Sender: linux-pci-owner@vger.kernel.org List-ID: On Tue, Apr 19, 2016 at 06:29:18AM +0000, Yong, Jonathan wrote: > Simplified Precision Time Measurement driver, activates PTM feature > if a PCIe PTM requester (as per PCI Express 3.1 Base Specification > section 7.32)is found, but not before checking if the rest of the > PCI hierarchy can support it. > > The driver does not take part in facilitating PTM conversations, > neither does it provide any useful services, it is only responsible > for setting up the required configuration space bits. > > As of writing, there aren't any PTM capable devices on the market > yet, but it is supported by the Intel Apollo Lake platform. Can you also add lspci support for the PTM capability? That will help debugging. Bjorn