From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailout2.w1.samsung.com (mailout2.w1.samsung.com [210.118.77.12]) (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 49E8233EAFE for ; Thu, 16 Oct 2025 13:38:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.118.77.12 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760621909; cv=none; b=YKT8rhZInoodK2GmpqS3dUOugX7pFjzLOLf0bkz6n85BXdclz1mdyxDJvbSAOAmAZXT1cbExUNDWZ1N/eQo1PIi9BWTabOh1rDcZgEvMEls7fMSfnuT4hS59CKL57SETziLBpHTXbBX5kmdJptcBkYoiIDxhmvePVNCWM69mCH0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760621909; c=relaxed/simple; bh=K+Qo9U5/8bG6S1LdtOr0WdY7ffLEzR7To9QOriX0cvM=; h=From:Date:Subject:MIME-Version:Message-Id:In-Reply-To:To:Cc: Content-Type:References; b=s23WJSXJllkVjB3EP1N9uyFPXajyhJWrQQxErQIlJf/llEnHdKx/L3sKT6fn4IcNGipeegB7vlz8ickH30ImKZemKo0Vf8C+MZqf3NOkA1CEINuZVTOLlk73h0FjXG8t81AgM8e6T9im5z//F+8Ry/diL6K+v+L5khahVVkVW4w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com; spf=pass smtp.mailfrom=samsung.com; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b=DvK4i00S; arc=none smtp.client-ip=210.118.77.12 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=samsung.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=samsung.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="DvK4i00S" Received: from eucas1p2.samsung.com (unknown [182.198.249.207]) by mailout2.w1.samsung.com (KnoxPortal) with ESMTP id 20251016133824euoutp02876fd668b1cd1d90fb5b3fbbe05fc081~u-EtT-vGJ2414624146euoutp02K for ; Thu, 16 Oct 2025 13:38:24 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout2.w1.samsung.com 20251016133824euoutp02876fd668b1cd1d90fb5b3fbbe05fc081~u-EtT-vGJ2414624146euoutp02K DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1760621904; bh=8ViuUbQvKkza5fLDio1ZaLLg5ogfLWW3Jq7KsiXlUPY=; h=From:Date:Subject:In-Reply-To:To:Cc:References:From; b=DvK4i00SyxuO651svBqAXK3Jhvxk4fh+oePrw6rMOKCLmZIM5rvd/DZ8+/X/qW0La yt+1SSZhp/Ln7y/VqiiaV6g3neflRb7SC2lwdsZNuByT0OT0XeAjbjQUubSkmO2ZQQ 31YfoakrNoOYbioYtGEeuUFDkAfgLywrGeD1AWxQ= Received: from eusmtip2.samsung.com (unknown [203.254.199.222]) by eucas1p2.samsung.com (KnoxPortal) with ESMTPA id 20251016133824eucas1p29ff4403869bcf49efe1c982d42a01f52~u-EsvMcSV2995529955eucas1p2a; Thu, 16 Oct 2025 13:38:24 +0000 (GMT) Received: from AMDC4942.eu.corp.samsungelectronics.net (unknown [106.210.136.40]) by eusmtip2.samsung.com (KnoxPortal) with ESMTPA id 20251016133822eusmtip2831eae8b9a7110f4c21e59f369b50877~u-EroAH0E2318523185eusmtip2b; Thu, 16 Oct 2025 13:38:22 +0000 (GMT) From: Michal Wilczynski Date: Thu, 16 Oct 2025 15:38:07 +0200 Subject: [PATCH v16 7/7] riscv: dts: thead: Add PWM fan and thermal control Precedence: bulk X-Mailing-List: rust-for-linux@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Message-Id: <20251016-rust-next-pwm-working-fan-for-sending-v16-7-a5df2405d2bd@samsung.com> In-Reply-To: <20251016-rust-next-pwm-working-fan-for-sending-v16-0-a5df2405d2bd@samsung.com> To: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?utf-8?q?Bj=C3=B6rn_Roy_Baron?= , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , Michal Wilczynski , Guo Ren , Fu Wei , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Marek Szyprowski , Benno Lossin , Michael Turquette , Drew Fustini , Daniel Almeida , Benno Lossin , Drew Fustini Cc: linux-kernel@vger.kernel.org, linux-pwm@vger.kernel.org, rust-for-linux@vger.kernel.org, linux-riscv@lists.infradead.org, devicetree@vger.kernel.org, Elle Rhumsaa X-Mailer: b4 0.15-dev X-CMS-MailID: 20251016133824eucas1p29ff4403869bcf49efe1c982d42a01f52 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" X-RootMTR: 20251016133824eucas1p29ff4403869bcf49efe1c982d42a01f52 X-EPHeader: CA X-CMS-RootMailID: 20251016133824eucas1p29ff4403869bcf49efe1c982d42a01f52 References: <20251016-rust-next-pwm-working-fan-for-sending-v16-0-a5df2405d2bd@samsung.com> Add Device Tree nodes to enable a PWM controlled fan and it's associated thermal management for the Lichee Pi 4A board. This enables temperature-controlled active cooling for the Lichee Pi 4A board based on SoC temperature. Reviewed-by: Drew Fustini Tested-by: Drew Fustini Reviewed-by: Elle Rhumsaa Signed-off-by: Michal Wilczynski --- arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts | 67 +++++++++++++++++++++++ 1 file changed, 67 insertions(+) diff --git a/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts index 4020c727f09e8e2286fdc7fecd79dbd8eba69556..c58c2085ca92a3234f1350500cedae4157f0c35f 100644 --- a/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts +++ b/arch/riscv/boot/dts/thead/th1520-lichee-pi-4a.dts @@ -28,9 +28,76 @@ aliases { chosen { stdout-path = "serial0:115200n8"; }; + + thermal-zones { + cpu-thermal { + polling-delay = <1000>; + polling-delay-passive = <1000>; + thermal-sensors = <&pvt 0>; + + trips { + fan_config0: fan-trip0 { + temperature = <39000>; + hysteresis = <5000>; + type = "active"; + }; + + fan_config1: fan-trip1 { + temperature = <50000>; + hysteresis = <5000>; + type = "active"; + }; + + fan_config2: fan-trip2 { + temperature = <60000>; + hysteresis = <5000>; + type = "active"; + }; + }; + + cooling-maps { + map-active-0 { + cooling-device = <&fan 1 1>; + trip = <&fan_config0>; + }; + + map-active-1 { + cooling-device = <&fan 2 2>; + trip = <&fan_config1>; + }; + + map-active-2 { + cooling-device = <&fan 3 3>; + trip = <&fan_config2>; + }; + }; + }; + }; + + fan: pwm-fan { + pinctrl-names = "default"; + pinctrl-0 = <&fan_pins>; + compatible = "pwm-fan"; + #cooling-cells = <2>; + pwms = <&pwm 1 10000000 0>; + cooling-levels = <0 66 196 255>; + }; + }; &padctrl0_apsys { + fan_pins: fan-0 { + pwm1-pins { + pins = "GPIO3_3"; /* PWM1 */ + function = "pwm"; + bias-disable; + drive-strength = <25>; + input-disable; + input-schmitt-disable; + slew-rate = <0>; + }; + }; + uart0_pins: uart0-0 { tx-pins { pins = "UART0_TXD"; -- 2.34.1