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=-6.8 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 83517C4CEC9 for ; Tue, 17 Sep 2019 18:56:27 +0000 (UTC) Received: from mail.linuxfoundation.org (mail.linuxfoundation.org [140.211.169.12]) (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 5C3E62189D for ; Tue, 17 Sep 2019 18:56:27 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="X2afMEBs" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5C3E62189D 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 mail.linux-foundation.org (localhost [127.0.0.1]) by mail.linuxfoundation.org (Postfix) with ESMTP id 17150C6D; Tue, 17 Sep 2019 18:56:27 +0000 (UTC) Received: from smtp1.linuxfoundation.org (smtp1.linux-foundation.org [172.17.192.35]) by mail.linuxfoundation.org (Postfix) with ESMTPS id 14DC8A7F for ; Tue, 17 Sep 2019 18:56:26 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp1.linuxfoundation.org (Postfix) with ESMTPS id C841D76D for ; Tue, 17 Sep 2019 18:56:25 +0000 (UTC) Received: from kernel.org (unknown [104.132.0.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8A4A8214AF; Tue, 17 Sep 2019 18:56:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568746585; bh=mbODalGRNQoWNnowm2tS1pcY2EbwBFAWll84phPGxbA=; h=In-Reply-To:References:Cc:To:From:Subject:Date:From; b=X2afMEBspYqrVXT0KNPzGo8hs6SqE7bnObaYtDnvMs7z38QOJlK4gbKabuaAqCbOP ECW6wcm77plYCjJXgCBwwyyI+0OSQOARJZVVveEUXUP3MPVeTbryP4q99Pt9Jmw6Ld HKuDFOJ+H+7HjkuwaGkz3B4DI6P4W2cia6BT6KaQ= MIME-Version: 1.0 In-Reply-To: <1566327992-362-3-git-send-email-jcrouse@codeaurora.org> References: <1566327992-362-1-git-send-email-jcrouse@codeaurora.org> <1566327992-362-3-git-send-email-jcrouse@codeaurora.org> To: Jordan Crouse , freedreno@lists.freedesktop.org From: Stephen Boyd Subject: Re: [PATCH 2/7] dt-bindings: arm-smmu: Add Adreno GPU variant User-Agent: alot/0.8.1 Date: Tue, 17 Sep 2019 11:56:24 -0700 Message-Id: <20190917185625.8A4A8214AF@mail.kernel.org> Cc: Mark Rutland , devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org, Rob Herring X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.12 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 Sender: iommu-bounces@lists.linux-foundation.org Errors-To: iommu-bounces@lists.linux-foundation.org Quoting Jordan Crouse (2019-08-20 12:06:27) > Add a compatible string to identify SMMUs that are attached > to Adreno GPU devices that wish to support split pagetables. > > Signed-off-by: Jordan Crouse > --- > > Documentation/devicetree/bindings/iommu/arm,smmu.txt | 7 +++++++ > 1 file changed, 7 insertions(+) > > diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt > index 3133f3b..3b07896 100644 > --- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt > +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt > @@ -18,6 +18,7 @@ conditions. > "arm,mmu-500" > "cavium,smmu-v2" > "qcom,smmu-v2" > + "qcom,adreno-smmu-v2" Is the tabbing weird here or just my MUA is failing? > > depending on the particular implementation and/or the > version of the architecture implemented. > @@ -31,6 +32,12 @@ conditions. > as below, SoC-specific compatibles: > "qcom,sdm845-smmu-500", "arm,mmu-500" > > + "qcom,adreno-smmu-v2" is a special implementation for Heh, special. > + SMMU devices attached to the Adreno GPU on Qcom devices. > + If selected, this will enable split pagetable (TTBR1) Is this selected? Sounds like Kconfig here. > + support. Only use this if the GPU target is capable of > + supporting 64 bit addresses. > + > - reg : Base address and size of the SMMU. > _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu