From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.6 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7192AC11D85 for ; Wed, 19 Feb 2020 22:30:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6B11724693 for ; Wed, 19 Feb 2020 22:24:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1582151098; bh=wZL3OOt1mgp9hbAl9bojkNL3ZJ0+D9P0cl+P8V4kYOs=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=mOMkAOtV6J8r+34Rsqd7n5X+Sehx9r2LeFEd31+TTiaKYMFbH03C6xpOIPT+tvu5S Ym5uqj5O4g3Nwph9qUkSZRq1I54It+AFegFk7IraC+qExWgwgFVCXYuIZtFbbsFfiV 5W1vsAFbshvoryW+iHSWdEb3NkfZdH7IkvguKztU= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727469AbgBSWY5 (ORCPT ); Wed, 19 Feb 2020 17:24:57 -0500 Received: from mail-oi1-f193.google.com ([209.85.167.193]:34831 "EHLO mail-oi1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727163AbgBSWY5 (ORCPT ); Wed, 19 Feb 2020 17:24:57 -0500 Received: by mail-oi1-f193.google.com with SMTP id b18so25521148oie.2; Wed, 19 Feb 2020 14:24:57 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=bw/arhxO0zD6uxPv9B55JT/z9CSekm6k6Bmp/kVtLV0=; b=iDoyGV5c0sHKnm8fR8KkHHXF/ntWO0w46zg5ISA1UjqFbYZT6PWEJgNscnK/WbzFiq zST2+piKM7q4lOxSJE3idurDkXnWN9cSm6HbTejthJM8QihAnSXj8sXAo7xbKMTtaAS7 R+WoTJmlNxUJkgnSnwOknoV1cqtrkw7YI9ZMijGBZoRy9hvljRb3nHsjSnn0202Hxko5 ctpdzYwDrwk5IAm+qS6+AOz7vbKP3Y95XtDb/Qv/Y2j1gvtcBF4uxDIfF+BjDYotZnno 20hfTkJf79AF5oeNR9v6EGFKZ/8u7aOzMtdKfUJeOVRhd5US+KM0S1fes2AIirl+AuPS hjwQ== X-Gm-Message-State: APjAAAUGzG6jwCLUc/rfUKD8lpIHVFw6wRIecqwf7YvXqQxbHcZIFltT MvGzhud4J5MSdT4SGnsLUg== X-Google-Smtp-Source: APXvYqzZzuIwDzmzfqhTKUe49az+Etwqyco/nG1nDw+t4D7VEkxMrWlgNAsahLPneOunxOSWnXEiHQ== X-Received: by 2002:aca:d903:: with SMTP id q3mr6124909oig.12.1582151096719; Wed, 19 Feb 2020 14:24:56 -0800 (PST) Received: from rob-hp-laptop (24-155-109-49.dyn.grandenetworks.net. [24.155.109.49]) by smtp.gmail.com with ESMTPSA id l80sm428436oib.37.2020.02.19.14.24.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Feb 2020 14:24:56 -0800 (PST) Received: (nullmailer pid 16262 invoked by uid 1000); Wed, 19 Feb 2020 22:24:54 -0000 Date: Wed, 19 Feb 2020 16:24:54 -0600 From: Rob Herring To: Jean-Philippe Brucker Cc: bhelgaas@google.com, will@kernel.org, robh+dt@kernel.org, lorenzo.pieralisi@arm.com, joro@8bytes.org, baolu.lu@linux.intel.com, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-acpi@vger.kernel.org, iommu@lists.linux-foundation.org, corbet@lwn.net, mark.rutland@arm.com, liviu.dudau@arm.com, sudeep.holla@arm.com, guohanjun@huawei.com, rjw@rjwysocki.net, lenb@kernel.org, robin.murphy@arm.com, dwmw2@infradead.org, amurray@thegoodpenguin.co.uk, frowand.list@gmail.com Subject: Re: [PATCH 01/11] dt-bindings: PCI: generic: Add ats-supported property Message-ID: <20200219222454.GA16221@bogus> References: <20200213165049.508908-1-jean-philippe@linaro.org> <20200213165049.508908-2-jean-philippe@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200213165049.508908-2-jean-philippe@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-acpi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org On Thu, 13 Feb 2020 17:50:39 +0100, Jean-Philippe Brucker wrote: > Add a way for firmware to tell the OS that ATS is supported by the PCI > root complex. An endpoint with ATS enabled may send Translation Requests > and Translated Memory Requests, which look just like Normal Memory > Requests with a non-zero AT field. So a root controller that ignores the > AT field may simply forward the request to the IOMMU as a Normal Memory > Request, which could end badly. In any case, the endpoint will be > unusable. > > The ats-supported property allows the OS to only enable ATS in endpoints > if the root controller can handle ATS requests. Only add the property to > pcie-host-ecam-generic for the moment. For non-generic root controllers, > availability of ATS can be inferred from the compatible string. > > Signed-off-by: Jean-Philippe Brucker > --- > Documentation/devicetree/bindings/pci/host-generic-pci.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > Reviewed-by: Rob Herring From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BBB50C11D92 for ; Wed, 19 Feb 2020 22:30:44 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id E95EE24696 for ; Wed, 19 Feb 2020 22:25:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org E95EE24696 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id A9E4A20534; Wed, 19 Feb 2020 22:25:01 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id kHDa4DPs-RQ4; Wed, 19 Feb 2020 22:25:00 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by silver.osuosl.org (Postfix) with ESMTP id 9451C203DF; Wed, 19 Feb 2020 22:25:00 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 85D67C1D80; Wed, 19 Feb 2020 22:25:00 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 55DEDC013E for ; Wed, 19 Feb 2020 22:24:58 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 355CB82EE5 for ; Wed, 19 Feb 2020 22:24:58 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id QoLfatcC5CaM for ; Wed, 19 Feb 2020 22:24:57 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-oi1-f196.google.com (mail-oi1-f196.google.com [209.85.167.196]) by whitealder.osuosl.org (Postfix) with ESMTPS id 8E64A82441 for ; Wed, 19 Feb 2020 22:24:57 +0000 (UTC) Received: by mail-oi1-f196.google.com with SMTP id q81so25542586oig.0 for ; Wed, 19 Feb 2020 14:24:57 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=bw/arhxO0zD6uxPv9B55JT/z9CSekm6k6Bmp/kVtLV0=; b=QdewZrxfZ9CIzAhJKZ3JE4LZCckrOLZhhWs/QX3qVfV+WPTvSVEemT3oGriPNHUzHX o+RQCGM9rAxB56wCU6TcW5TD0lyY21sjByppUH278zUbtCqybATlpQtr3onvKOMZPFo4 oRq1E2a1EKYbHZwMCTsIB1vL1aToZKbedZ7N9RYUlED6ECB35i5h4kmVd9exukKe78vG qx3CfnYdFqP3A24Su+2IGoJXZi+9JM0jWTL5vC3s0t/8vjJbR5G1m7cWXtk6vfZoW4nh b9q7z6gLLprXrBSSj6GTEW78WcSAcXRFZzDCbouFKd0a0AOftcrTq5GWQ+iK8G2OZ+o+ 3BYg== X-Gm-Message-State: APjAAAVPrCEjIXgkxuqsygxIjiuuMKi20elcv0MMQpQYOIFYcA1cy9Wy cm+V97JY5mQjzRa4kIBPtA== X-Google-Smtp-Source: APXvYqzZzuIwDzmzfqhTKUe49az+Etwqyco/nG1nDw+t4D7VEkxMrWlgNAsahLPneOunxOSWnXEiHQ== X-Received: by 2002:aca:d903:: with SMTP id q3mr6124909oig.12.1582151096719; Wed, 19 Feb 2020 14:24:56 -0800 (PST) Received: from rob-hp-laptop (24-155-109-49.dyn.grandenetworks.net. [24.155.109.49]) by smtp.gmail.com with ESMTPSA id l80sm428436oib.37.2020.02.19.14.24.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Feb 2020 14:24:56 -0800 (PST) Received: (nullmailer pid 16262 invoked by uid 1000); Wed, 19 Feb 2020 22:24:54 -0000 Date: Wed, 19 Feb 2020 16:24:54 -0600 From: Rob Herring To: Jean-Philippe Brucker Subject: Re: [PATCH 01/11] dt-bindings: PCI: generic: Add ats-supported property Message-ID: <20200219222454.GA16221@bogus> References: <20200213165049.508908-1-jean-philippe@linaro.org> <20200213165049.508908-2-jean-philippe@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200213165049.508908-2-jean-philippe@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) Cc: mark.rutland@arm.com, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, liviu.dudau@arm.com, guohanjun@huawei.com, will@kernel.org, corbet@lwn.net, frowand.list@gmail.com, linux-acpi@vger.kernel.org, lenb@kernel.org, devicetree@vger.kernel.org, robh+dt@kernel.org, bhelgaas@google.com, linux-arm-kernel@lists.infradead.org, dwmw2@infradead.org, rjw@rjwysocki.net, iommu@lists.linux-foundation.org, sudeep.holla@arm.com, robin.murphy@arm.com, amurray@thegoodpenguin.co.uk X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" On Thu, 13 Feb 2020 17:50:39 +0100, Jean-Philippe Brucker wrote: > Add a way for firmware to tell the OS that ATS is supported by the PCI > root complex. An endpoint with ATS enabled may send Translation Requests > and Translated Memory Requests, which look just like Normal Memory > Requests with a non-zero AT field. So a root controller that ignores the > AT field may simply forward the request to the IOMMU as a Normal Memory > Request, which could end badly. In any case, the endpoint will be > unusable. > > The ats-supported property allows the OS to only enable ATS in endpoints > if the root controller can handle ATS requests. Only add the property to > pcie-host-ecam-generic for the moment. For non-generic root controllers, > availability of ATS can be inferred from the compatible string. > > Signed-off-by: Jean-Philippe Brucker > --- > Documentation/devicetree/bindings/pci/host-generic-pci.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > Reviewed-by: Rob Herring _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 86CE5C11D88 for ; Wed, 19 Feb 2020 22:30:44 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 7778C24697 for ; Wed, 19 Feb 2020 22:25:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ApZukWsE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 7778C24697 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=oe3wuqzBUa9VXqU6jOha2dp7V4QK2e1sg5gS/+oyF6w=; b=ApZukWsEj3Ighx FCKpCvPSg/e6H7C0PB03qDZaBRm93DiEatdmn4nvCQR1TJGHJtQl8m70t9tzFfFaU/EEzAsqpT2Iw 5MjVp3fPAG/nrmWa46Gn0L8TyWBiBuAHNDH1npEQHFb1P07MnlLoXXUKR8UoMUT85USY+ULX7KnVq vc+9sKmUVt2hR7zNW/ZXBtgxoVyibjVeJlFqw8MEhvAZpGdPZXS579fNCZS0cFVfouKTzPp+WY3fT goVj5FSLM/IJVorZfebvB8sGyZHgA3S1l7VltJRjJdZVwh0eTAzuH1/pAy05xPbiTvdVSnbFs6g/p H0sVmChRtQqMqz0FUOvA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4Xm8-0007g1-3Z; Wed, 19 Feb 2020 22:25:00 +0000 Received: from mail-oi1-f195.google.com ([209.85.167.195]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j4Xm5-0007fd-L3 for linux-arm-kernel@lists.infradead.org; Wed, 19 Feb 2020 22:24:58 +0000 Received: by mail-oi1-f195.google.com with SMTP id c16so25519030oic.3 for ; Wed, 19 Feb 2020 14:24:57 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=bw/arhxO0zD6uxPv9B55JT/z9CSekm6k6Bmp/kVtLV0=; b=C2NYAOjB0f9lHuU5q15RXFaQ+EjhaB/xWTH9MexkFAaO1lhQB+l1kXb8aX4KXifjHg q8UZTwohLE0x24tgfWsbSHcl9c2b0Jbv3CcWufjsfJ5vOkzc/4Kk+6IaVmPNL8uwF48o 3r+RToqpPmSCZyGOsN8Y1POi9mjvJxE9M5vXHFNsZIkUxFpMb4ryzEzJFjn05jW0nI/5 wff213VQPgmAQA/+Rx1uMMh0PGSdoBIDeF4y8+YryoCJlIVVZGD4+pIyVMmUYU+Lahri gLcmUCO2aXIcUXWMu85M2GZpI/Wi+9SPznivto71SJ4wkpDxG25kBGMDl6leAcddcsSJ U7tg== X-Gm-Message-State: APjAAAV/EOpVwoiFpFoxuwXkBpC9yh9QyzIQ5Mody9snH+72nDbX1oO+ l0lYTnAEEb9JQtbB8EVsmg== X-Google-Smtp-Source: APXvYqzZzuIwDzmzfqhTKUe49az+Etwqyco/nG1nDw+t4D7VEkxMrWlgNAsahLPneOunxOSWnXEiHQ== X-Received: by 2002:aca:d903:: with SMTP id q3mr6124909oig.12.1582151096719; Wed, 19 Feb 2020 14:24:56 -0800 (PST) Received: from rob-hp-laptop (24-155-109-49.dyn.grandenetworks.net. [24.155.109.49]) by smtp.gmail.com with ESMTPSA id l80sm428436oib.37.2020.02.19.14.24.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Feb 2020 14:24:56 -0800 (PST) Received: (nullmailer pid 16262 invoked by uid 1000); Wed, 19 Feb 2020 22:24:54 -0000 Date: Wed, 19 Feb 2020 16:24:54 -0600 From: Rob Herring To: Jean-Philippe Brucker Subject: Re: [PATCH 01/11] dt-bindings: PCI: generic: Add ats-supported property Message-ID: <20200219222454.GA16221@bogus> References: <20200213165049.508908-1-jean-philippe@linaro.org> <20200213165049.508908-2-jean-philippe@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200213165049.508908-2-jean-philippe@linaro.org> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200219_142457_688067_1C53AEB9 X-CRM114-Status: GOOD ( 13.30 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, linux-doc@vger.kernel.org, linux-pci@vger.kernel.org, liviu.dudau@arm.com, guohanjun@huawei.com, will@kernel.org, lorenzo.pieralisi@arm.com, corbet@lwn.net, frowand.list@gmail.com, joro@8bytes.org, linux-acpi@vger.kernel.org, lenb@kernel.org, devicetree@vger.kernel.org, robh+dt@kernel.org, bhelgaas@google.com, linux-arm-kernel@lists.infradead.org, dwmw2@infradead.org, rjw@rjwysocki.net, iommu@lists.linux-foundation.org, sudeep.holla@arm.com, baolu.lu@linux.intel.com, robin.murphy@arm.com, amurray@thegoodpenguin.co.uk Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, 13 Feb 2020 17:50:39 +0100, Jean-Philippe Brucker wrote: > Add a way for firmware to tell the OS that ATS is supported by the PCI > root complex. An endpoint with ATS enabled may send Translation Requests > and Translated Memory Requests, which look just like Normal Memory > Requests with a non-zero AT field. So a root controller that ignores the > AT field may simply forward the request to the IOMMU as a Normal Memory > Request, which could end badly. In any case, the endpoint will be > unusable. > > The ats-supported property allows the OS to only enable ATS in endpoints > if the root controller can handle ATS requests. Only add the property to > pcie-host-ecam-generic for the moment. For non-generic root controllers, > availability of ATS can be inferred from the compatible string. > > Signed-off-by: Jean-Philippe Brucker > --- > Documentation/devicetree/bindings/pci/host-generic-pci.yaml | 6 ++++++ > 1 file changed, 6 insertions(+) > Reviewed-by: Rob Herring _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel