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 83390C636D3 for ; Thu, 9 Feb 2023 12:23:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229674AbjBIMXB (ORCPT ); Thu, 9 Feb 2023 07:23:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36330 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229642AbjBIMW7 (ORCPT ); Thu, 9 Feb 2023 07:22:59 -0500 Received: from mail-wm1-x331.google.com (mail-wm1-x331.google.com [IPv6:2a00:1450:4864:20::331]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id ADCDD125A8 for ; Thu, 9 Feb 2023 04:22:58 -0800 (PST) Received: by mail-wm1-x331.google.com with SMTP id l37-20020a05600c1d2500b003dfe46a9801so1415493wms.0 for ; Thu, 09 Feb 2023 04:22:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:in-reply-to:references:cc:to:from :content-language:subject:user-agent:mime-version:date:message-id :from:to:cc:subject:date:message-id:reply-to; bh=LSnO37B34hy1pNZA6pCiDi9wzcXDsjOg5QyQA1q+Ms4=; b=OuLFbs3kk5PBuZV1uVbAjaYQdXyT2NX7mXCS04oJUM7Xa2FHT/XMcyVHEp78GSXeqy FrKWhvbBnZVt2Wbz+os/9+v8AieE0a8OwzrV318CBrG7YWWj949GfCH8ZbEae/HzQv4j hRy3A5oS5i3zzcgb1I7FYbijRH/9TUOdZFVXA+6czIvZGXSqb2NDPuTEQiGiRaBx01M8 pYFvndv97Uce4pzf/VnPmRcNSk0qqFCbAEpRnjxgSQO7sb+IGlQ17fBxSoiM05f9Vufl /n0gtyi71PEFKQ0uuyTf1TpHHon9AKiFLc+cKm2HB33p2rM/77l42dvdPoejKImyb8I8 3/sg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:in-reply-to:references:cc:to:from :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=LSnO37B34hy1pNZA6pCiDi9wzcXDsjOg5QyQA1q+Ms4=; b=ll/7jfLu1mu/rAejEFB1+81NT6JDlX8sg9YZcvWHoKGMxF0vtlQKyk460514Uba0MJ +UdERSW+4lzYT5VyfZIkgg3gf0aLSEZYxmg4+XPB4kfoKDhwPo634uS0UmDEEyk6rNc+ uSUyJ4Rc4tol2X7toN0l7gJ84NpGBO3H9rlYZaGWBm6RMV07QQSDwyUK8yQS1rk8z9DS +KwCRgkzzCTMzU3Z5+ch/vvdKUrGBRDDR6w4x7nPULorMjs67PutxU6KHqrozGQ6au9d d8HSIbYLPJ4hbrYRdGde7+BMhoNQeiyuAIy0b3Y4xsx6GO8xtAHHkv6VJhPl+CktTumo hrNw== X-Gm-Message-State: AO0yUKW97oLpxqplmxoY+bwjqfdYD4X2xSuBcQjN2OyH8ikZ1VKSOGWm ZhHN3LvNt+9IkqfhQqJ+75uCRw== X-Google-Smtp-Source: AK7set8vBWfXVH0I3G7ClYmPs1n81MK1qNsDlSUnJEVAfy1Nyh+CRYkg6nzQx4o/eaCCvokyLt3ubw== X-Received: by 2002:a05:600c:130f:b0:3cf:7197:e68a with SMTP id j15-20020a05600c130f00b003cf7197e68amr9902039wmf.18.1675945377311; Thu, 09 Feb 2023 04:22:57 -0800 (PST) Received: from [192.168.0.162] (188-141-3-169.dynamic.upc.ie. [188.141.3.169]) by smtp.gmail.com with ESMTPSA id t8-20020a7bc3c8000000b003e00c9888besm4850980wmj.30.2023.02.09.04.22.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 09 Feb 2023 04:22:56 -0800 (PST) Message-ID: <027268b7-4b04-f52e-06a8-9d924dc6efe4@linaro.org> Date: Thu, 9 Feb 2023 12:22:55 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.7.0 Subject: Re: [PATCH] arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved Content-Language: en-US From: Bryan O'Donoghue To: Konrad Dybcio , Amit Pundir , Dmitry Baryshkov Cc: Bjorn Andersson , Andy Gross , Rob Herring , Krzysztof Kozlowski , Caleb Connolly , linux-arm-msm , dt , lkml References: <20230124182857.1524912-1-amit.pundir@linaro.org> <39751511-3f06-7c39-9c21-208d4c272113@linaro.org> <1a840d88-e5b1-711c-b980-f57620c54472@linaro.org> <8508e3d5-7468-0b2f-5a43-7c439ecf2d8b@linaro.org> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/02/2023 12:11, Bryan O'Donoghue wrote: >> If the bootloader splash is enabled then this memory is used until the >> DPU driver instructs MDP5 pipes to suck data from a newly assigned >> address, >> so there's a short window where it is. > > It seems a shame to reserve 30 something megabytes of memory for > continuous splash unless we are actually using it is my point. > > If I'm running headless its just wasted memory. Couldn't we 1. Find reserved continuous splash memory 2. Fee it in the MDP when we make the transition It must be possible --- bod