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 0FBD9EB64DB for ; Mon, 19 Jun 2023 10:02:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231743AbjFSKCI (ORCPT ); Mon, 19 Jun 2023 06:02:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231469AbjFSKBs (ORCPT ); Mon, 19 Jun 2023 06:01:48 -0400 Received: from mail-ed1-x52e.google.com (mail-ed1-x52e.google.com [IPv6:2a00:1450:4864:20::52e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B5561AD for ; Mon, 19 Jun 2023 03:01:22 -0700 (PDT) Received: by mail-ed1-x52e.google.com with SMTP id 4fb4d7f45d1cf-5189f49c315so3286210a12.2 for ; Mon, 19 Jun 2023 03:01:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1687168870; x=1689760870; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=AbI0QgBrLQeLcssg9rtiXrf4wd4jiZkZw6E10JEgTUA=; b=FPSJiJtSEk/no4lgqWvvrdwb4/c3/hu6uSCtkZpUmEfFc3yDjt/3SRLpbClBFa0/CW 7rZJv01v2wu2HzpFQdz5Oz9SwyHn4L6kpkQTjAiKJASgjSZopzvSV8SCU3abeO9c3eN1 ah2tfkapS2z4rAtNldVh6LuXCKaR8It4GzTa4Rgsed49Jppk7vpMa7l1ZO3PNps2p/i5 U/F4cj9gW3Su2BOeX91m2uRJnXQanc/gF99T6ZqrdkvOEJd+ZgQ7nq6GCQz5TuNColtw oYjyZymMwS7R7i6qM8RL6YfJed0VRevThl1kmTEKSzbKy0uw45HWl/IpwFy1AmGkSRWw Heaw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687168870; x=1689760870; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=AbI0QgBrLQeLcssg9rtiXrf4wd4jiZkZw6E10JEgTUA=; b=XB+Vj8CIj34sh+BHqizcnLKFVZRX4DP3J3pz7+S63lx+v9zVpiKvTvaSOMPt+Gq/Gd tMLRvbP0Zm0l3ascNgjUBf04wXDGWmJisuJH7+nGWnwmDqOR5LViAbmKH7jC37pZ4gQr flEvgb1QyYeSq5LzaAvFimj/xoD97uOXEkuYpMA3DhNz69iShQqj8KzemKJM3MMIxfcw 71zUfykMMszD71dBqeALwdjwZMRQXMDwANqEotnGO3GzEVoUXGjA/DyVmkJbwXqp10AL NiYurPXvYVjI/TZCJb8UMQCDnQy3SnrHBlFr7pWZ8IsgWp/QAU64vUkGsD1q7iJI1QdW YFjQ== X-Gm-Message-State: AC+VfDy2z0qt37HTjMyDRa5oOFCCUVaAPoxI/gsWYjlCP2dfJOj0nmHo 99hvglHIpgt5/j9nNYOZixRa/Q== X-Google-Smtp-Source: ACHHUZ5Wr1zrmV+IjWFWVTXosVcRAtRvvNHFtvgSBWCz3QOkC9lX35h4DvGtLQ/5bDWuyYiewgMk2g== X-Received: by 2002:a17:907:6d1b:b0:977:b397:bbfa with SMTP id sa27-20020a1709076d1b00b00977b397bbfamr7953183ejc.6.1687168870176; Mon, 19 Jun 2023 03:01:10 -0700 (PDT) Received: from [192.168.1.20] ([178.197.219.26]) by smtp.gmail.com with ESMTPSA id si5-20020a170906cec500b0098638cdb8b0sm4616780ejb.158.2023.06.19.03.01.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 19 Jun 2023 03:01:09 -0700 (PDT) Message-ID: <00b8721e-da69-dcf8-8f64-9a9028f24d13@linaro.org> Date: Mon, 19 Jun 2023 12:01:06 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: [PATCH v2 1/4] dt-bindings: firmware: qcom,scm: Document that SCM can be dma-coherent Content-Language: en-US To: Douglas Anderson , 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 , Andy Gross , Conor Dooley , Das Srinagesh , Konrad Dybcio , Krzysztof Kozlowski , Rob Herring , Robert Marko , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20230616081440.v2.1.Ie79b5f0ed45739695c9970df121e11d724909157@changeid> From: Krzysztof Kozlowski In-Reply-To: <20230616081440.v2.1.Ie79b5f0ed45739695c9970df121e11d724909157@changeid> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 16/06/2023 17:14, Douglas Anderson wrote: > 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 Best regards, Krzysztof