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 6D769EB64DA for ; Mon, 19 Jun 2023 10:00:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231201AbjFSKA5 (ORCPT ); Mon, 19 Jun 2023 06:00:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46208 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231819AbjFSKAo (ORCPT ); Mon, 19 Jun 2023 06:00:44 -0400 Received: from mail-lj1-x22a.google.com (mail-lj1-x22a.google.com [IPv6:2a00:1450:4864:20::22a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D7517E74 for ; Mon, 19 Jun 2023 03:00:20 -0700 (PDT) Received: by mail-lj1-x22a.google.com with SMTP id 38308e7fff4ca-2b4826ba943so4294431fa.0 for ; Mon, 19 Jun 2023 03:00:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1687168810; x=1689760810; 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=zgtgZC+NWCmbR6AgbaQUNv+TVCdcpACa8YYNOaYVq6s=; b=u4QFBKx7tQmyQGEIg9zHlgovL7arAs7XdU4ib6zvOnsvUrXGsD3tkIQQhbGdxr5/mz SGeVJsqoSPwfd+YdhGDv8H55ln9D7JZQC4rrpJcnmdssdbPxug7q3sZiB9Hbvo7dRAsT +6M2OyG9ccnhfDDuoucW+MONXvSkX9x6epU148mqVCCrm1PTKCfZwANNNDs8vFID9cc0 EszcW1dZy+rkx8lL9GxLAMqzWyDFQVOB2qs4FWI9QuGMCt4s6B/AyJkoSXuamlWNHHgV CQh/WKGLUNUobusSDg3gNLA/4qfST4z1p4pxcHmfw4O7MUBRXF71ctElv0ijsVVtrRgP DbeA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1687168810; x=1689760810; 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=zgtgZC+NWCmbR6AgbaQUNv+TVCdcpACa8YYNOaYVq6s=; b=SikUkINGthjfByI3k9YwCMgZyPsCQlWvngplqsFBKLidK1+8gS50Nh5+SVPWU3BAPU 6snsIaXvExG72JNcQi1MuzAYATf2dAV2/ppW8yPfoEFavZWZ8/0oA3LvRQfPkdYNWQu4 nOX9HaIV6GUKRhuIxbWbOCuKM7PxZ4n17bxEsq0UDnIevEEfmDLFEkDhAdQ3+qmMTjp3 bqr3A5l9B+4Rn8R8ssEpR+aUFIxN9udM5RA1gtWmmdFm54fv5nHscw/K7AV6ftYZI4dB ZZsvppeNeB46/y2EHEFtx/BFuePC3THRQuLoUOahhVMkza9j2mDKLeyWIcvyM3YEbBlQ Kw0A== X-Gm-Message-State: AC+VfDyWOcLdONFsmhi/hJnOqHUe9vYUq21aQzjsGNLODTnyOudi6Tnc eKHgZjTSeMYVhQyDUmRDhk07hg== X-Google-Smtp-Source: ACHHUZ5Kw0cGvG0SbexzELcxNJo/BkSOmCE9JHC/OFXkpSOmiVIDXuyi6fVNnbuArOZ7110bPSCNjA== X-Received: by 2002:a2e:98d6:0:b0:2af:3141:a52b with SMTP id s22-20020a2e98d6000000b002af3141a52bmr5791422ljj.22.1687168809898; Mon, 19 Jun 2023 03:00:09 -0700 (PDT) Received: from [192.168.1.101] (abyl242.neoplus.adsl.tpnet.pl. [83.9.31.242]) by smtp.gmail.com with ESMTPSA id a15-20020a2e860f000000b002b44bcdf809sm2039965lji.87.2023.06.19.03.00.07 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 19 Jun 2023 03:00:09 -0700 (PDT) Message-ID: <23cecdde-2b24-a472-1497-5da9f1158c00@linaro.org> Date: Mon, 19 Jun 2023 12:00:07 +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: Krzysztof Kozlowski , 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 , Krzysztof Kozlowski , Rob Herring , Robert Marko , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org References: <20230616081440.v2.1.Ie79b5f0ed45739695c9970df121e11d724909157@changeid> From: Konrad Dybcio In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 18.06.2023 10:07, Krzysztof Kozlowski wrote: > 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 > 2 Forgot to press alt or something Konrad > > Best regards, > Krzysztof >