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 X-Spam-Level: X-Spam-Status: No, score=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 01605C04AAC for ; Mon, 20 May 2019 17:01:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B43C6216B7 for ; Mon, 20 May 2019 17:01:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="DgcBl8Sm" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2392626AbfETRBk (ORCPT ); Mon, 20 May 2019 13:01:40 -0400 Received: from mail-io1-f67.google.com ([209.85.166.67]:37452 "EHLO mail-io1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388204AbfETRBj (ORCPT ); Mon, 20 May 2019 13:01:39 -0400 Received: by mail-io1-f67.google.com with SMTP id u2so11621345ioc.4 for ; Mon, 20 May 2019 10:01:39 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=x6v5cZ4d3IbzzHyX9tB5SggAe9a0MLVJDqe4K+VrolY=; b=DgcBl8Smh89XruihvIIqo2/jwlRNXKwzhoakXmLzoUDPce90oG/GyzQ8l/jtA2OL0i SEXXSDe8NSrl1QM7MqUwkOtgDOh2Gr66AcXniCOv8ZqSJbDbxRvzXncS4+WdSFomASNH WfY30ET7xT7NYiS1Z1z8P77Zabz6rKiUmME9A= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=x6v5cZ4d3IbzzHyX9tB5SggAe9a0MLVJDqe4K+VrolY=; b=t7v3QB3NOvgufO8covXVxBNRhdNesRp34VwzUka5FEbo8ZLcPH0uqzd1rAUPKScbVF dbCaJFPasjRAUbsDFQvNGiP1LEJ1tX+c3QBPi9sXu6KFjUGu5QVIJAFOrhoFHntkLioV uwk65oCEMHh4mOacsnGPPSHA/ADj5GvPO1a8p00njWnCrDFRvnYlTQU+QK4NhOY/ibfU KVtm+ZsrJ6LgWeJzT6ILifd2YdblGBK34/8j+6NBa8D1w2+U+xTuCsj2uB4glKsKC5/j DtfCxFOk6Fe5jNCf9LtFXDd594Qmm3r7MyLgkrv+RSfUii99pENsNgxDxVSOrtb6ktJV XnoQ== X-Gm-Message-State: APjAAAWGqm/J551rFtQtMDIVqsbjN4Ykk5g6G5GvmZ7zHbT8gYCbFl9I jjS+5QtgQbSO29vaAVzKBKHd2Q== X-Google-Smtp-Source: APXvYqy0W2gpclxj4ZGsAs2T9LwfcoVY4dorBvuLBx7NxPHNi4Rs1l+AN5UkFsEt4Xy4HrBvwIlWAw== X-Received: by 2002:a6b:2c94:: with SMTP id s142mr25278871ios.302.1558371699238; Mon, 20 May 2019 10:01:39 -0700 (PDT) Received: from localhost ([2620:15c:202:1:75a:3f6e:21d:9374]) by smtp.gmail.com with ESMTPSA id v202sm25015itb.38.2019.05.20.10.01.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 May 2019 10:01:38 -0700 (PDT) From: Matthias Kaehlcke To: Heiko Stuebner , Rob Herring , Mark Rutland Cc: linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Douglas Anderson , Matthias Kaehlcke Subject: [PATCH 1/2] ARM: dts: rockchip: Limit GPU frequency on veyron mickey to 300 MHz when the CPU gets very hot Date: Mon, 20 May 2019 10:01:31 -0700 Message-Id: <20190520170132.91571-1-mka@chromium.org> X-Mailer: git-send-email 2.21.0.1020.gf2820cf01a-goog MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On rk3288 the CPU and GPU temperatures are correlated. Limit the GPU frequency on veyron mickey to 300 MHz for CPU temperatures >= 85°C. This matches the configuration of the downstream Chrome OS 3.14 kernel, the 'official' kernel for mickey. Signed-off-by: Matthias Kaehlcke --- Note: this patch depends on "ARM: dts: rockchip: Add #cooling-cells entry for rk3288 GPU" (https://lore.kernel.org/patchwork/patch/1075005/) --- arch/arm/boot/dts/rk3288-veyron-mickey.dts | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/rk3288-veyron-mickey.dts b/arch/arm/boot/dts/rk3288-veyron-mickey.dts index d889ab3c8235..f118d92a49d0 100644 --- a/arch/arm/boot/dts/rk3288-veyron-mickey.dts +++ b/arch/arm/boot/dts/rk3288-veyron-mickey.dts @@ -125,6 +125,12 @@ <&cpu2 8 THERMAL_NO_LIMIT>, <&cpu3 8 THERMAL_NO_LIMIT>; }; + + /* At very hot, don't let GPU go over 300 MHz */ + cpu_very_hot_limit_gpu { + trip = <&cpu_alert_very_hot>; + cooling-device = <&gpu 2 2>; + }; }; }; -- 2.21.0.1020.gf2820cf01a-goog