From patchwork Sun Aug 25 20:32:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiko Stuebner X-Patchwork-Id: 823358 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 737093B78D; Sun, 25 Aug 2024 20:32:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.11.138.130 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724617977; cv=none; b=QV5xfPDWW4W5YQ+PrMtvb8Q/4Qwhdi4sqzNpsznWGnQoUNOz0RLQykdAH0ACj8+ndFid+KwtHy7rKvOrGLrV3Gg5/io/EEV/ZUa/lgQ7DMNc+X3KhFHeFjovMvfRBsnb3OT7T5frI2hVOOf9G5D4bd+ePJmWRDGn6eai5IV2JSY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724617977; c=relaxed/simple; bh=I1ayERe8+MKL+sKOTVHqL9vNWgJrFIP3xM5InJN9/c8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=svU4aw/1SFnBo/NbCbpiKAQhEO75GLJgfV9Fe+wWBbbKD/zpegS/HPpmDPCvydf+S2AjbZ5iqPNp0souZjy5Sln9rKEsmDpcv5fbf9XXHGWV6RV2T8vjQZsWmVDMq25e84Z7H2IWqxMqa7hxl182CRu5td9A+02W/lumgZO/Ijs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de; spf=pass smtp.mailfrom=sntech.de; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b=D1gBs5Fm; arc=none smtp.client-ip=185.11.138.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=sntech.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sntech.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sntech.de header.i=@sntech.de header.b="D1gBs5Fm" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Transfer-Encoding:MIME-Version:References: In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=OX2mDGoNhn5NuPQsdotMoW4uOBKIyWHrefRAShTe53U=; b=D1gBs5FmrSMGtVNzlimfww/Xy8 T2YkapJ/ZtqFbvVpKcdSmZ8niwabpAS1z2l5H0lSVjRydt1dE7yiAr8sh26RtK7HYm965BHXJ0JOZ s7MEJnSYzght/OlC1dQUe3XM0TFMTf/5DI2TMn1COcnEVHFYi7BqWqo09ALxUCCWtAlew2VPVeGdQ PAbtsVO5SzPH8Pdza+0Ob5rjC+NaVX1kDintIBnvMnmV7DUgxrvz5qOJ4AWPIC0zxnqQhARGxI3Qq lDZyy7knvtsv65hl4IDgnMdCNLMhzvogTFgMszjJ/V3IVCqRGwsGX0KlkhYpjuq5wU0Nl0kH5I+je JpWC1cOQ==; Received: from i53875a40.versanet.de ([83.135.90.64] helo=phil.lan) by gloria.sntech.de with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1siJum-0001cM-OR; Sun, 25 Aug 2024 22:32:44 +0200 From: Heiko Stuebner To: lee@kernel.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, jdelvare@suse.com, linux@roeck-us.net, heiko@sntech.de, dmitry.torokhov@gmail.com, pavel@ucw.cz, ukleinek@debian.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org Subject: [PATCH v6 6/7] arm64: dts: rockchip: hook up the MCU on the QNAP TS433 Date: Sun, 25 Aug 2024 22:32:34 +0200 Message-ID: <20240825203235.1122198-7-heiko@sntech.de> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240825203235.1122198-1-heiko@sntech.de> References: <20240825203235.1122198-1-heiko@sntech.de> Precedence: bulk X-Mailing-List: linux-leds@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The MCU is an important part of the device functionality. It provides functionality like fan-control, more leds, etc and even more important without it, the NAS-device cannot even fully turned off. Hook up the serial device to its uart and hook into the thermal management to control the fan according to the cpu temperature. While the MCU also provides a temperature sensor for the case, this one is just polled and does not provide functionality for handling trip points in hardware, so a lot of polling would be involved. As the cpu is only cooled passively in these devices, it's temperature rising will indicate the temperature level of the system just earlier. Signed-off-by: Heiko Stuebner --- .../boot/dts/rockchip/rk3568-qnap-ts433.dts | 57 +++++++++++++++++++ 1 file changed, 57 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts b/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts index e601d9271ba8..4bc5f5691d45 100644 --- a/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts +++ b/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433.dts @@ -483,6 +483,54 @@ rgmii_phy0: ethernet-phy@0 { }; }; +/* + * The MCU can provide system temperature too, but only by polling and of + * course also cannot set trip points. So attach to the cpu thermal-zone + * instead to control the fan. + */ +&cpu_thermal { + trips { + case_fan0: case-fan0 { + hysteresis = <2000>; + temperature = <35000>; + type = "active"; + }; + + case_fan1: case-fan1 { + hysteresis = <2000>; + temperature = <45000>; + type = "active"; + }; + + case_fan2: case-fan2 { + hysteresis = <2000>; + temperature = <65000>; + type = "active"; + }; + }; + + cooling-maps { + /* + * Always provide some air movement, due to small case + * full of harddrives. + */ + map1 { + cooling-device = <&fan THERMAL_NO_LIMIT 1>; + trip = <&case_fan0>; + }; + + map2 { + cooling-device = <&fan 2 3>; + trip = <&case_fan1>; + }; + + map3 { + cooling-device = <&fan 4 THERMAL_NO_LIMIT>; + trip = <&case_fan2>; + }; + }; +}; + &pcie30phy { data-lanes = <1 2>; status = "okay"; @@ -582,6 +630,15 @@ &tsadc { */ &uart0 { status = "okay"; + + mcu { + compatible = "qnap,ts433-mcu"; + + fan: fan-0 { + #cooling-cells = <2>; + cooling-levels = <0 64 89 128 166 204 221 238>; + }; + }; }; /*