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Wed, 28 Aug 2019 06:52:22 -0700 (PDT) From: Linus Walleij To: linux-arm-kernel@lists.infradead.org, Ulf Hansson Subject: [PATCH 1/2] ARM: dts: ux500: Fix up the thermal nodes Date: Wed, 28 Aug 2019 15:52:17 +0200 Message-Id: <20190828135218.7307-1-linus.walleij@linaro.org> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190828_065226_154695_476131B3 X-CRM114-Status: GOOD ( 11.47 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:243 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linus Walleij , Daniel Lezcano Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The thermal driver for the DB8500 was never properly converted to device tree, the node should definitely be activated for all board variants so move this down into the main SoC DTSI, and default on. Cc: Daniel Lezcano Signed-off-by: Linus Walleij --- arch/arm/boot/dts/ste-dbx5x0.dtsi | 22 +++++++++++++++++++++- arch/arm/boot/dts/ste-snowball.dts | 29 ----------------------------- 2 files changed, 21 insertions(+), 30 deletions(-) diff --git a/arch/arm/boot/dts/ste-dbx5x0.dtsi b/arch/arm/boot/dts/ste-dbx5x0.dtsi index b1a31134f860..7953eea7c486 100644 --- a/arch/arm/boot/dts/ste-dbx5x0.dtsi +++ b/arch/arm/boot/dts/ste-dbx5x0.dtsi @@ -505,10 +505,30 @@ thermal@801573c0 { compatible = "stericsson,db8500-thermal"; reg = <0x801573c0 0x40>; + interrupt-parent = <&prcmu>; interrupts = <21 IRQ_TYPE_LEVEL_HIGH>, <22 IRQ_TYPE_LEVEL_HIGH>; interrupt-names = "IRQ_HOTMON_LOW", "IRQ_HOTMON_HIGH"; - status = "disabled"; + num-trips = <4>; + + trip0-temp = <70000>; + trip0-type = "active"; + trip0-cdev-num = <1>; + trip0-cdev-name0 = "thermal-cpufreq-0"; + + trip1-temp = <75000>; + trip1-type = "active"; + trip1-cdev-num = <1>; + trip1-cdev-name0 = "thermal-cpufreq-0"; + + trip2-temp = <80000>; + trip2-type = "active"; + trip2-cdev-num = <1>; + trip2-cdev-name0 = "thermal-cpufreq-0"; + + trip3-temp = <85000>; + trip3-type = "critical"; + trip3-cdev-num = <0>; }; db8500-prcmu-regulators { diff --git a/arch/arm/boot/dts/ste-snowball.dts b/arch/arm/boot/dts/ste-snowball.dts index 3428290644ba..064e8abec954 100644 --- a/arch/arm/boot/dts/ste-snowball.dts +++ b/arch/arm/boot/dts/ste-snowball.dts @@ -376,40 +376,11 @@ pinctrl-0 = <&ssp0_snowball_mode>; }; - cpufreq-cooling { - status = "okay"; - }; - prcmu@80157000 { cpufreq { status = "okay"; }; - thermal@801573c0 { - num-trips = <4>; - - trip0-temp = <70000>; - trip0-type = "active"; - trip0-cdev-num = <1>; - trip0-cdev-name0 = "thermal-cpufreq-0"; - - trip1-temp = <75000>; - trip1-type = "active"; - trip1-cdev-num = <1>; - trip1-cdev-name0 = "thermal-cpufreq-0"; - - trip2-temp = <80000>; - trip2-type = "active"; - trip2-cdev-num = <1>; - trip2-cdev-name0 = "thermal-cpufreq-0"; - - trip3-temp = <85000>; - trip3-type = "critical"; - trip3-cdev-num = <0>; - - status = "okay"; - }; - ab8500 { ab8500-gpio { /* From patchwork Wed Aug 28 13:52:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 11119167 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 975E1112C for ; Wed, 28 Aug 2019 13:52:46 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 75C4620856 for ; Wed, 28 Aug 2019 13:52:46 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="OQ/yaJTU"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="M0lzAeg3" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 75C4620856 Authentication-Results: mail.kernel.org; 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Wed, 28 Aug 2019 06:52:26 -0700 (PDT) From: Linus Walleij To: linux-arm-kernel@lists.infradead.org, Ulf Hansson Subject: [PATCH 2/2] ARM: dts: ux500: Update thermal zone Date: Wed, 28 Aug 2019 15:52:18 +0200 Message-Id: <20190828135218.7307-2-linus.walleij@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190828135218.7307-1-linus.walleij@linaro.org> References: <20190828135218.7307-1-linus.walleij@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190828_065229_531260_E9AF842A X-CRM114-Status: GOOD ( 15.47 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:244 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Linus Walleij , Daniel Lezcano Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org After moving the DB8500 thermal driver to use device tree we define the default thermal zone for the Ux500 in the device tree replacing the oldstyle hardcoded trigger points. This default thermal zone utilizes the cpufreq driver (using the generic OF cpufreq back-end) as a passive cooling device, and defines a critical trip point when the temperature goes above 85 degrees celsius which will (hopefully) make the system shut down if the temperature cannot be controlled. This default policy can later be augmented for specific subdevices if these have tighter temperature conditions. After this patch we get: /sys/class/thermal/thermal_zone0 (CPU thermal zone) This reports the rough temperature and trip points from the thermal zone in the device tree. By executing two yes > /dev/null & jobs fully utilizing the two CPU cores we can notice the temperature climbing in the thermal zone in response and falling when we kill the jobs. /syc/class/thermal/cooling_device0 (cpufreq cooling) this reports all 4 available cpufreq frequencies as states. Suggested-by: Daniel Lezcano Signed-off-by: Linus Walleij --- arch/arm/boot/dts/ste-dbx5x0.dtsi | 57 +++++++++++++++++++------------ 1 file changed, 36 insertions(+), 21 deletions(-) diff --git a/arch/arm/boot/dts/ste-dbx5x0.dtsi b/arch/arm/boot/dts/ste-dbx5x0.dtsi index 7953eea7c486..9ee50f339e7a 100644 --- a/arch/arm/boot/dts/ste-dbx5x0.dtsi +++ b/arch/arm/boot/dts/ste-dbx5x0.dtsi @@ -44,6 +44,7 @@ clocks = <&prcmu_clk PRCMU_ARMSS>; clock-names = "cpu"; clock-latency = <20000>; + #cooling-cells = <2>; }; CPU1: cpu@301 { device_type = "cpu"; @@ -52,6 +53,39 @@ }; }; + thermal-zones { + /* + * Thermal zone for the SoC, using the thermal sensor in the + * PRCMU for temperature and the cpufreq driver for passive + * cooling. + */ + cpu_thermal: cpu-thermal { + polling-delay-passive = <0>; + polling-delay = <1000>; + + thermal-sensors = <&thermal>; + + trips { + cpu_alert: cpu-alert { + temperature = <70000>; + hysteresis = <2000>; + type = "passive"; + }; + cpu-crit { + temperature = <85000>; + hysteresis = <0>; + type = "critical"; + }; + }; + + cooling-maps { + trip = <&cpu_alert>; + cooling-device = <&CPU0 0 2>; + contribution = <100>; + }; + }; + }; + soc { #address-cells = <1>; #size-cells = <1>; @@ -502,33 +536,14 @@ reg = <0x80157450 0xC>; }; - thermal@801573c0 { + thermal: thermal@801573c0 { compatible = "stericsson,db8500-thermal"; reg = <0x801573c0 0x40>; interrupt-parent = <&prcmu>; interrupts = <21 IRQ_TYPE_LEVEL_HIGH>, <22 IRQ_TYPE_LEVEL_HIGH>; interrupt-names = "IRQ_HOTMON_LOW", "IRQ_HOTMON_HIGH"; - num-trips = <4>; - - trip0-temp = <70000>; - trip0-type = "active"; - trip0-cdev-num = <1>; - trip0-cdev-name0 = "thermal-cpufreq-0"; - - trip1-temp = <75000>; - trip1-type = "active"; - trip1-cdev-num = <1>; - trip1-cdev-name0 = "thermal-cpufreq-0"; - - trip2-temp = <80000>; - trip2-type = "active"; - trip2-cdev-num = <1>; - trip2-cdev-name0 = "thermal-cpufreq-0"; - - trip3-temp = <85000>; - trip3-type = "critical"; - trip3-cdev-num = <0>; + #thermal-sensor-cells = <0>; }; db8500-prcmu-regulators {