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[2620:137:e000::1:20]) by mx.google.com with ESMTP id z12-20020a63e10c000000b005538b4e729csi35874pgh.171.2023.06.16.08.45.44; Fri, 16 Jun 2023 08:45:59 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@chromium.org header.s=google header.b=Gazntjz7; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=chromium.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345911AbjFPPSX (ORCPT + 99 others); Fri, 16 Jun 2023 11:18:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41378 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242043AbjFPPSU (ORCPT ); Fri, 16 Jun 2023 11:18:20 -0400 Received: from mail-pf1-x430.google.com (mail-pf1-x430.google.com [IPv6:2607:f8b0:4864:20::430]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3EAFA30FF for ; Fri, 16 Jun 2023 08:18:19 -0700 (PDT) Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-65311774e52so753610b3a.3 for ; Fri, 16 Jun 2023 08:18:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1686928699; x=1689520699; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=JjK5uSBUBCtKUiHKGw2fDzcH80L9Te7xYyX5HYmSKZk=; b=Gazntjz7fU9vAVPqqzRdDRac27cecBITu2YvqyJ/AerXxYtOfZN2wz718g7xcI3NJj iGK8DZvU6z1+Z3BId6izQhVmrGv1ygnshSs9Q09cAXjmSoRXh1OzSNajVzmt9kbmlqwM zgNgQpgihqEhJaCqPN565bpB2w/NQFTyfXs2o= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686928699; x=1689520699; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=JjK5uSBUBCtKUiHKGw2fDzcH80L9Te7xYyX5HYmSKZk=; b=JlcVbiUm9BUg2eGVgfY/QGapnU1ts8E1V1rx9Cn491XHbWt2Wq6EUEH65KjjjQtbz1 zb/7l3HE2ggfZvKMyFSWD7pBb3o3iu7xOngL6H8l3S4k2/LpT+s7SqMbv2WcOZIgcOc0 PdP6DdD7UibQdVTvKk9vAVxMmhgTRmDxG94Pcp+pCFF/nbvC900NLcvtIsX43KGVmr9j BR6XqJNCbMDwCx+t6suKShWs1rTK2n4k/gqiFTbbiSXnGLIbhFZWxWq4tkU8gFiyAaBR IjU405hXEASSKrCTLPjz/xGnm6JNnl/IbXban/m48Xze8zDjHl2bt1+6QWIwBmrlqHQW EpTg== X-Gm-Message-State: AC+VfDynz7KvPLf4oSkDJtXrs2qLphzePm631nzTXSg4ymP39+QA1d/Q 6mcmSYXdmOI/NyCMm6K8oK9JPg== X-Received: by 2002:a05:6a21:7890:b0:11f:1aa2:666b with SMTP id bf16-20020a056a21789000b0011f1aa2666bmr1412485pzc.32.1686928698728; Fri, 16 Jun 2023 08:18:18 -0700 (PDT) Received: from tictac2.mtv.corp.google.com ([2620:15c:9d:2:3cfa:2bcd:1a5:27ce]) by smtp.gmail.com with ESMTPSA id a12-20020aa780cc000000b0063d24fcc2besm4593656pfn.125.2023.06.16.08.18.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Jun 2023 08:18:18 -0700 (PDT) From: Douglas Anderson To: andersson@kernel.org Cc: amit.pundir@linaro.org, Will Deacon , sumit.semwal@linaro.org, linux-arm-msm@vger.kernel.org, konrad.dybcio@somainline.org, linux-arm-kernel@lists.infradead.org, Stephan Gerhold , Manivannan Sadhasivam , Nikita Travkin , Stephen Boyd , Sibi Sankar , Douglas Anderson , Andy Gross , Conor Dooley , Das Srinagesh , Konrad Dybcio , Krzysztof Kozlowski , Rob Herring , Robert Marko , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/4] dt-bindings: firmware: qcom,scm: Document that SCM can be dma-coherent Date: Fri, 16 Jun 2023 08:14:38 -0700 Message-ID: <20230616081440.v2.1.Ie79b5f0ed45739695c9970df121e11d724909157@changeid> X-Mailer: git-send-email 2.41.0.162.gfafddb0af9-goog MIME-Version: 1.0 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_NONE, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1768874688844635612?= X-GMAIL-MSGID: =?utf-8?q?1768874688844635612?= Trogdor devices use firmware backed by TF-A instead of Qualcomm's normal TZ. On TF-A we end up mapping memory as cacheable. Specifically, you can see in Trogdor's TF-A code [1] in qti_sip_mem_assign() that we call qti_mmap_add_dynamic_region() with MT_RO_DATA. This translates down to MT_MEMORY instead of MT_NON_CACHEABLE or MT_DEVICE. Let's allow devices like trogdor to be described properly by allowing "dma-coherent" in the SCM node. Signed-off-by: Douglas Anderson Acked-by: Krzysztof Kozlowski --- Changes in v2: - Bindings change new for v2. Documentation/devicetree/bindings/firmware/qcom,scm.yaml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml index 367d04ad1923..83381f3a1341 100644 --- a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml +++ b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml @@ -71,6 +71,8 @@ properties: minItems: 1 maxItems: 3 + dma-coherent: true + interconnects: maxItems: 1