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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4DC4AECAAD4 for ; Wed, 31 Aug 2022 21:25:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230478AbiHaVZW (ORCPT ); Wed, 31 Aug 2022 17:25:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51028 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232215AbiHaVZV (ORCPT ); Wed, 31 Aug 2022 17:25:21 -0400 Received: from mail-oa1-f49.google.com (mail-oa1-f49.google.com [209.85.160.49]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4E9B255082; Wed, 31 Aug 2022 14:25:20 -0700 (PDT) Received: by mail-oa1-f49.google.com with SMTP id 586e51a60fabf-11f4e634072so12976308fac.13; Wed, 31 Aug 2022 14:25:20 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date; bh=3IO7QYOx3ovoZtkLdtuGfUPure2DXDjbSLg7kimkmnk=; b=M9KTKOqS5jkSj+FIbaVsG5A0B/o+cHUCcat0CJuKK6flq7WPJnC/5ipTx7YwHG1GO4 faDv1w9S9O7KLeS2D9PioKjRMKIVvtdxRaMJ6bUPVQGacW5Qzyfx/NUkcIeMrn7Gu9Cx w8/UwloFuOle+7iNzDdtYsAvBMWz5ZC5q/DsI6/yh2tyN9pyDs32sUTR4RNIaSU9ECmb SlYJOGozX16ch/16cK/51IvooDcXMbnyRag9wByBjYda83Po6hDx1mXQkTgOpIfiDNB9 X6y5jsK5amE5nKEpwOqI11PoA/1L7TKNafPDN+fAVn3aKklzUDC0QJBCDR4A9O9wOBxE T4bg== X-Gm-Message-State: ACgBeo3Yo8UVQX3ZtI5fCNfLAapFVQplnsprbg+/nTWrKuJRiqZ97r5b 0yj5fLyjOq/Ex4if3QtDcw== X-Google-Smtp-Source: AA6agR5FNzao4c+d5/VDOYcbN1vLGoZj2frgIS/RF/DPtMRtmJentWXzD/8RolZiTMlRjZR7NZI+KQ== X-Received: by 2002:a05:6808:f89:b0:344:cab1:14e9 with SMTP id o9-20020a0568080f8900b00344cab114e9mr2076886oiw.82.1661981119631; Wed, 31 Aug 2022 14:25:19 -0700 (PDT) Received: from robh.at.kernel.org (66-90-144-107.dyn.grandenetworks.net. [66.90.144.107]) by smtp.gmail.com with ESMTPSA id by6-20020a056830608600b00638e49d4cadsm9278246otb.36.2022.08.31.14.25.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 31 Aug 2022 14:25:19 -0700 (PDT) Received: (nullmailer pid 277757 invoked by uid 1000); Wed, 31 Aug 2022 21:25:18 -0000 Date: Wed, 31 Aug 2022 16:25:18 -0500 From: Rob Herring To: Serge Semin Cc: Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , devicetree@vger.kernel.org, Pavel Parkhomenko , Krzysztof Kozlowski , Bjorn Helgaas , Jingoo Han , linux-kernel@vger.kernel.org, Gustavo Pimentel , Frank Li , linux-pci@vger.kernel.org, Serge Semin , Alexey Malahov , Manivannan Sadhasivam , Rob Herring Subject: Re: [PATCH v5 12/20] dt-bindings: PCI: dwc: Add dma-coherent property Message-ID: <20220831212518.GA277724-robh@kernel.org> References: <20220822184701.25246-1-Sergey.Semin@baikalelectronics.ru> <20220822184701.25246-13-Sergey.Semin@baikalelectronics.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220822184701.25246-13-Sergey.Semin@baikalelectronics.ru> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On Mon, 22 Aug 2022 21:46:53 +0300, Serge Semin wrote: > DW PCIe EP/RP AXI- and TRGT1-master interfaces are responsible for the > application memory access. They are used by the RP/EP PCIe buses (MWr/MWr > TLPs emitted by the peripheral PCIe devices) and the eDMA block. Since all > of them mainly involve the system memory and basically mean DMA we can > expect the corresponding platforms can be designed in a way to make sure > the transactions are cache-coherent. As such the DW PCIe DT-nodes can have > the 'dma-coherent' property specified. Let's permit it in the DT-bindings > then. > > Signed-off-by: Serge Semin > > --- > > Changelog v3: > - This is a new patch created on v3 lap of the series. > --- > Documentation/devicetree/bindings/pci/snps,dw-pcie-common.yaml | 2 ++ > 1 file changed, 2 insertions(+) > Reviewed-by: Rob Herring