From patchwork Tue Mar 21 15:36:09 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Quentin Schulz X-Patchwork-Id: 9636969 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id F0FA1602CC for ; Tue, 21 Mar 2017 15:38:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E5AAC28421 for ; Tue, 21 Mar 2017 15:38:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DA7012842B; Tue, 21 Mar 2017 15:38:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 63FCB28421 for ; Tue, 21 Mar 2017 15:38:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To:Message-Id:Date:Subject:To:From:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Owner; bh=nVv/cXdXZW3wqzRNhIEXyyCvxs7sPUpKttOW8OuBX08=; b=TfqLApoLcATVmeoR00Pm/uc9Qc iUNeh1W7j7KEMsyVEX7Tr6O1lTnigPTIuDlWtSlqnt87AU5bHnG6ehXLsneiGJzYz3QXVC8hdsmrI IZbht2bt4UtPmYcwW8BRVXqpGnP6Ka//vN+cMySXPib6xCqkOcCJrxGmItHOJJsqPsWrcMGdFPwQ4 LT8a5hjNGAYBO787IE/K4oOqqkUpuzCfUc+7UVhSKiUy373dlHG+6yzRNkdbuu4w8EwV2usooXHqQ nvl0rsiO6vb9cAJ0/PIhYeVt8F2yMJ/v3dslJ1GuLjMr5mDBIkYJ0nMm/MxP9RoM+n2Tdfjz9unCt oEiuD3xw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cqLsA-0002DR-Rc; Tue, 21 Mar 2017 15:38:58 +0000 Received: from mail.free-electrons.com ([62.4.15.54]) by bombadil.infradead.org with esmtp (Exim 4.87 #1 (Red Hat Linux)) id 1cqLqZ-0008V2-6C for linux-arm-kernel@lists.infradead.org; Tue, 21 Mar 2017 15:37:30 +0000 Received: by mail.free-electrons.com (Postfix, from userid 110) id 7E94221D3A; Tue, 21 Mar 2017 16:36:38 +0100 (CET) Received: from qschulz.home (LStLambert-657-1-97-87.w90-63.abo.wanadoo.fr [90.63.216.87]) by mail.free-electrons.com (Postfix) with ESMTPSA id 58B55212EA; Tue, 21 Mar 2017 16:36:37 +0100 (CET) From: Quentin Schulz To: dmitry.torokhov@gmail.com, robh+dt@kernel.org, mark.rutland@arm.com, maxime.ripard@free-electrons.com, wens@csie.org, lee.jones@linaro.org, linux@armlinux.org.uk, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net Subject: [PATCH v3 09/11] ARM: dtsi: sun8i: a33: add CPU thermal throttling Date: Tue, 21 Mar 2017 16:36:09 +0100 Message-Id: <20170321153611.16228-10-quentin.schulz@free-electrons.com> X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170321153611.16228-1-quentin.schulz@free-electrons.com> References: <20170321153611.16228-1-quentin.schulz@free-electrons.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20170321_083720_673790_D2C52B64 X-CRM114-Status: UNSURE ( 9.82 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: thomas.petazzoni@free-electrons.com, devicetree@vger.kernel.org, linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, Quentin Schulz , linux-sunxi@googlegroups.com, icenowy@aosc.xyz, linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This adds CPU thermal throttling for the Allwinner A33. It uses the thermal sensor present in the SoC's GPADC. Signed-off-by: Quentin Schulz --- v3: - switched to new phandle because of modified DT node name for the GPADC (named THS), - got rid of cooling-min-level and cooling-max-level as it's not used in any code in the kernel, v2: - updated cooling-max-level to reflect newly added OPPs, arch/arm/boot/dts/sun8i-a33.dtsi | 45 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/arch/arm/boot/dts/sun8i-a33.dtsi b/arch/arm/boot/dts/sun8i-a33.dtsi index f391f71..73552bb 100644 --- a/arch/arm/boot/dts/sun8i-a33.dtsi +++ b/arch/arm/boot/dts/sun8i-a33.dtsi @@ -43,6 +43,7 @@ */ #include "sun8i-a23-a33.dtsi" +#include / { cpu0_opp_table: opp_table0 { @@ -127,6 +128,7 @@ clocks = <&ccu CLK_CPUX>; clock-names = "cpu"; operating-points-v2 = <&cpu0_opp_table>; + #cooling-cells = <2>; }; cpu@1 { @@ -170,6 +172,49 @@ }; }; + thermal-zones { + cpu_thermal { + /* milliseconds */ + polling-delay-passive = <250>; + polling-delay = <1000>; + thermal-sensors = <&ths>; + + cooling-maps { + map0 { + trip = <&cpu_alert0>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + map1 { + trip = <&cpu_alert1>; + cooling-device = <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; + + trips { + cpu_alert0: cpu_alert0 { + /* milliCelsius */ + temperature = <75000>; + hysteresis = <2000>; + type = "passive"; + }; + + cpu_alert1: cpu_alert1 { + /* milliCelsius */ + temperature = <90000>; + hysteresis = <2000>; + type = "hot"; + }; + + cpu_crit: cpu_crit { + /* milliCelsius */ + temperature = <110000>; + hysteresis = <2000>; + type = "critical"; + }; + }; + }; + }; + memory { reg = <0x40000000 0x80000000>; };