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=-6.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 74DC4C35673 for ; Sat, 22 Feb 2020 21:40:45 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4948C21741 for ; Sat, 22 Feb 2020 21:40:45 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=megous.com header.i=@megous.com header.b="RjHT6V8Y" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726907AbgBVVkn (ORCPT ); Sat, 22 Feb 2020 16:40:43 -0500 Received: from vps.xff.cz ([195.181.215.36]:33162 "EHLO vps.xff.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726828AbgBVVkn (ORCPT ); Sat, 22 Feb 2020 16:40:43 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megous.com; s=mail; t=1582407641; bh=n/YtLfVCyVXP+mWFkjUYJqHKw++vxYLHzIOxG9EZXdk=; h=From:To:Cc:Subject:Date:From; b=RjHT6V8Y3pQ/ti1xfG4/iXH8NMgav6xPA3+JxLk3YvGktporIz9WQpFCv19WxjZVC HEP/J7wFIlJcvilXiKreH08mktTYOQdOg3UhFAOUcfFgHGiJZU6DUbdDPnMDV1XunT 3nMEFY7iuo7gjqTNAgtayVqgaA8YCev5RZ4KO6Uw= From: Ondrej Jirman To: linux-sunxi@googlegroups.com Cc: Ondrej Jirman , Rob Herring , Mark Rutland , Maxime Ripard , Chen-Yu Tsai , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS), linux-arm-kernel@lists.infradead.org (moderated list:ARM/Allwinner sunXi SoC support), linux-kernel@vger.kernel.org (open list) Subject: [PATCH] ARM: dts: sun8i-a83t: Add thermal trip points/cooling maps Date: Sat, 22 Feb 2020 22:40:39 +0100 Message-Id: <20200222214039.209426-1-megous@megous.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This enables passive cooling by down-regulating CPU voltage and frequency. Signed-off-by: Ondrej Jirman --- arch/arm/boot/dts/sun8i-a83t.dtsi | 60 +++++++++++++++++++++++++++---- 1 file changed, 54 insertions(+), 6 deletions(-) diff --git a/arch/arm/boot/dts/sun8i-a83t.dtsi b/arch/arm/boot/dts/sun8i-a83t.dtsi index 74ac7ee9383cf..53c2b6a836f27 100644 --- a/arch/arm/boot/dts/sun8i-a83t.dtsi +++ b/arch/arm/boot/dts/sun8i-a83t.dtsi @@ -72,7 +72,7 @@ cpu0: cpu@0 { #cooling-cells = <2>; }; - cpu@1 { + cpu1: cpu@1 { compatible = "arm,cortex-a7"; device_type = "cpu"; clocks = <&ccu CLK_C0CPUX>; @@ -83,7 +83,7 @@ cpu@1 { #cooling-cells = <2>; }; - cpu@2 { + cpu2: cpu@2 { compatible = "arm,cortex-a7"; device_type = "cpu"; clocks = <&ccu CLK_C0CPUX>; @@ -94,7 +94,7 @@ cpu@2 { #cooling-cells = <2>; }; - cpu@3 { + cpu3: cpu@3 { compatible = "arm,cortex-a7"; device_type = "cpu"; clocks = <&ccu CLK_C0CPUX>; @@ -116,7 +116,7 @@ cpu100: cpu@100 { #cooling-cells = <2>; }; - cpu@101 { + cpu101: cpu@101 { compatible = "arm,cortex-a7"; device_type = "cpu"; clocks = <&ccu CLK_C1CPUX>; @@ -127,7 +127,7 @@ cpu@101 { #cooling-cells = <2>; }; - cpu@102 { + cpu102: cpu@102 { compatible = "arm,cortex-a7"; device_type = "cpu"; clocks = <&ccu CLK_C1CPUX>; @@ -138,7 +138,7 @@ cpu@102 { #cooling-cells = <2>; }; - cpu@103 { + cpu103: cpu@103 { compatible = "arm,cortex-a7"; device_type = "cpu"; clocks = <&ccu CLK_C1CPUX>; @@ -1188,12 +1188,60 @@ cpu0_thermal: cpu0-thermal { polling-delay-passive = <0>; polling-delay = <0>; thermal-sensors = <&ths 0>; + + trips { + cpu0_hot: cpu-hot { + temperature = <80000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu0_very_hot: cpu-very-hot { + temperature = <100000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + cpu-hot-limit { + trip = <&cpu0_hot>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu1 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu2 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu3 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; }; cpu1_thermal: cpu1-thermal { polling-delay-passive = <0>; polling-delay = <0>; thermal-sensors = <&ths 1>; + + trips { + cpu1_hot: cpu-hot { + temperature = <80000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu1_very_hot: cpu-very-hot { + temperature = <100000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + cpu-hot-limit { + trip = <&cpu1_hot>; + cooling-device = <&cpu100 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu101 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu102 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>, + <&cpu103 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; }; gpu_thermal: gpu-thermal { -- 2.25.1