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 6E84BC0015E for ; Thu, 13 Jul 2023 16:53:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235374AbjGMQxE (ORCPT ); Thu, 13 Jul 2023 12:53:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33292 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235416AbjGMQw6 (ORCPT ); Thu, 13 Jul 2023 12:52:58 -0400 Received: from mail-il1-x12e.google.com (mail-il1-x12e.google.com [IPv6:2607:f8b0:4864:20::12e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C29321FC0 for ; Thu, 13 Jul 2023 09:52:54 -0700 (PDT) Received: by mail-il1-x12e.google.com with SMTP id e9e14a558f8ab-3463de183b0so3911965ab.2 for ; Thu, 13 Jul 2023 09:52:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1689267174; x=1691859174; h=content-transfer-encoding:author:mime-version:references :in-reply-to:message-id:date:subject:cc:to:from:from:to:cc:subject :date:message-id:reply-to; bh=dcIGYFaQfGqSRzz1TR43A9wAS36o64Mm47YNW9KhJGo=; b=rNKbM43IVbuLmaY5vpRk95N0ouqDf122oy6vp3z+XqzqJdSqzEJE49uA/+LAlaTvzC va80pws1oE2LFizrEocPk3POxluC+DsEHwwhMXkn9kZxztlmon0JerXhq+Rv985t9dfJ izZengGZk7DseJjSpHjHc9HrswDXf08dRy2VywcwJF8q6Qj2EP66+D0f8kQxk+lCznmY Kon7SzME/qoenAAUA7B2HPEHQj2HTWWhYlvOOD1kqMp2ld4hf+6qAnnpwzEdHgCNCd1Z Vr0lmId459CUK8susiATSTB9UXoPJ9XogCq9WhynQ50c7Z23C+gEFoBJiGw+x6n8hdHk yXHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689267174; x=1691859174; h=content-transfer-encoding:author:mime-version:references :in-reply-to:message-id:date:subject:cc:to:from:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=dcIGYFaQfGqSRzz1TR43A9wAS36o64Mm47YNW9KhJGo=; b=RAoTCuQwq6ObVhspc9qpHLHiO1KgB5MgfZpZs6zCtyL2EQz1uooIjvWgw3GD3qJRYQ KcD/4c7kPcPRvmCEKki7SqGu+TBhNSujcbWXoibST/ZZfz9eyIU9A0j7zFhv1R4rWk1c ttiHgZDjOdxYM5hvsu8F+BSLt3x2U47mLnFxAbUzDWU4h/lxGzr0R8vr4WX4RKE81ZJh YC73Y9buL3ZVTBRdL38lysC5F+w4SacKV+v2Id/Ommo6EaiuFYtgpNWbY37wkP4Wme4H 1rlgnhtDuP9jDaOLpyIZIQ241cqK6zpUeJH5fx4ahb04MgrwQRYMr9+uWsNLqPAVqNk2 VqrA== X-Gm-Message-State: ABy/qLYNeu8oNSDU6kLYPcn+snMZqaLaEn2JRZU2xc+dsQlFbdwmojJE kl/OMshuD4EeSpxeazvZZ4PLdA== X-Google-Smtp-Source: APBJJlEXsdTd6Pdgx3SCjb2Ew/A5vqSryB0OA8QHjsU17e1cE61ltYcsbHB9o5es5L+hVdITQ4UnZA== X-Received: by 2002:a92:c6c7:0:b0:346:5813:f7f5 with SMTP id v7-20020a92c6c7000000b003465813f7f5mr2120484ilm.12.1689267174022; Thu, 13 Jul 2023 09:52:54 -0700 (PDT) Received: from x-wing.lan ([49.207.50.231]) by smtp.gmail.com with ESMTPSA id d3-20020a17090abf8300b002633fa95ac2sm12009150pjs.13.2023.07.13.09.52.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Jul 2023 09:52:53 -0700 (PDT) From: Amit Pundir To: Bjorn Andersson , Andy Gross , Dmitry Baryshkov , Rob Herring , Konrad Dybcio , Krzysztof Kozlowski , Conor Dooley , Caleb Connolly , Bryan Donoghue , Rob Clark , Abhinav Kumar , Sean Paul , Marijn Suijten , David Airlie , Daniel Vetter , Krishna Manikandan Cc: dri-devel , freedreno , linux-arm-msm , dt , lkml Subject: [PATCH v5 2/2] arm64: dts: qcom: sdm845-db845c: Mark cont splash memory region as reserved Date: Thu, 13 Jul 2023 22:22:38 +0530 Message-Id: <20230713165238.2814849-2-amit.pundir@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230713165238.2814849-1-amit.pundir@linaro.org> References: <20230713165238.2814849-1-amit.pundir@linaro.org> MIME-Version: 1.0 Author: Amit Pundir Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Adding a reserved memory region for the framebuffer memory (the splash memory region set up by the bootloader). Signed-off-by: Amit Pundir --- v5: Re-sending with updated dt-bindings patch in mdss-common schema. v4: Re-sending this along with a new dt-bindings patch to document memory-region property in qcom,sdm845-mdss schema and keep dtbs_check happy. v3: Point this reserved region to MDSS. v2: Updated commit message. There was some dicussion on v1 but it didn't go anywhere, https://lore.kernel.org/linux-kernel/20230124182857.1524912-1-amit.pundir@linaro.org/T/#u. The general consensus is that this memory should be freed and be made resuable but that (releasing this piece of memory) has been tried before and it is not trivial to return the reserved memory node to the system RAM pool in this case. arch/arm64/boot/dts/qcom/sdm845-db845c.dts | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts index d6b464cb61d6..f546f6f57c1e 100644 --- a/arch/arm64/boot/dts/qcom/sdm845-db845c.dts +++ b/arch/arm64/boot/dts/qcom/sdm845-db845c.dts @@ -101,6 +101,14 @@ hdmi_con: endpoint { }; }; + reserved-memory { + /* Cont splash region set up by the bootloader */ + cont_splash_mem: framebuffer@9d400000 { + reg = <0x0 0x9d400000 0x0 0x2400000>; + no-map; + }; + }; + lt9611_1v8: lt9611-vdd18-regulator { compatible = "regulator-fixed"; regulator-name = "LT9611_1V8"; @@ -506,6 +514,7 @@ &i2c14 { }; &mdss { + memory-region = <&cont_splash_mem>; status = "okay"; }; -- 2.25.1