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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 6928EC98315 for ; Thu, 24 Sep 2026 07:15:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yrjq9fQeRRT3Dkn6ja90PvKLpuXI2Gg2RkQogJKUx6w=; b=WrI5yXCOEbpfof0n7lV73hdl3f TeJsny4ZdjLfp1fat81sA/ddELTBuUNCg8nQbZKfQsh5aGkpEo6EBUznDlvdjNUU0HPI5MukawBjf Djhez9YBCk2eqAIwkiVf0BAxSk4/XmVZIT0knYhnc0ZWhxQOB/p1fY8vaqmGUVirCfilW70kh8Fmi 9SeygwCYUdanURV58GHrjDPSDA6d1+e8VDC9NKRET+hV/e3SFALBVdUXOWIui1g7LGR8Tr06oBmLC ZBQxSUxxRAO3VAsLg1n6G2OMbwxqUhuK+BY+o0fxohplVWkXmNCfObj+KRhYpS1/lWDxIdlk70zcE pv4UNRnQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x9dfd-0000000AFWq-0kL2; Thu, 24 Sep 2026 07:15:05 +0000 Received: from mail-ed2-x1e.google.com ([2a00:1450:4864:33::1e]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x9dfV-0000000AFRX-1l25 for linux-arm-kernel@lists.infradead.org; Thu, 24 Sep 2026 07:14:58 +0000 Received: by mail-ed2-x1e.google.com with SMTP id 4fb4d7f45d1cf-6a9adea43b6so2479022a12.0 for ; Thu, 24 Sep 2026 00:14:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wermuth-pl.20251104.gappssmtp.com; s=20251104; t=1790234095; x=1790838895; darn=lists.infradead.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=yrjq9fQeRRT3Dkn6ja90PvKLpuXI2Gg2RkQogJKUx6w=; b=QXXktA3d0OjjEpmJeO2C0+6dy5jexIGsLeF6E4LAsRL8dnZ5KV3cJpzMpzfCJoiEsH TUmMWXnWlg5I1dq+E2WREA9Hd/ZJ8kqruqU3VZjfh9CHkVqXmS28Aoob/g2QuwzmlQKN Zy1VdIPuFZ/+drVgL3tEqZofWG+8/LLK7BZJnJruS4z72ATm/7qvWJpgpmhhTKgOdbPy 6M8Z0ZCs/CDvycXXGa6Td1ZClp0BJHK6zuIdMYDt5GeJfydkPXiEX7HvAP9WfL4R9BE0 1svypFhjQy/DgZRYptMmDThj7sXSYI84F1FeHIZXF8JGRtVMuMv4jX14cWGqLonk+sYo i5iA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790234095; x=1790838895; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=yrjq9fQeRRT3Dkn6ja90PvKLpuXI2Gg2RkQogJKUx6w=; b=p/gkb0A2YLmhQ0XNMZ8S9r7lg/GgUn0vYTFXpSQWNGYRdNk3ZTTsBMAjYp3yusSk1I FHeJLhfUTsTs2CGGQ0Jv6hr3y3tChdkgyC2QzOkgz5jgEHfWqexFs1F6N3McM1pd1X6R Ew/v0q7h1TggALUXN65EO+nED9ZZ85efCtL1qOtkjgqM9i2Rlrux6L7kcudJw59pv/+c Zco18gDnKAg55ePT1m5pdtx4/2U3iIEQE1muaTA6qEXvvCgMXSWwx+to5qlUc/QoqPzi pmLCDzGqHL33wXpK5qX9duSYoiBJobUeFiKB1KJ5ZoX/BAz75cUlshoOq1uLja70FnbW XsnA== X-Forwarded-Encrypted: i=1; AKwUvBz4vefuHeDPh9ivnTdxNXr3tjnCLuBOig79On8Lp7JlpxrGTeMP5Nri0p7J6Q9ci5QKdXgXhD0+kqUmTxFoV4EC@lists.infradead.org X-Gm-Message-State: AFuF++nv+nFObMkhIl2SMO35If9hr40QAPmGmvJeGmjGozZhVKggiSUk +RDMVyGGqANXn4+hWALPZTtQANn3VvuCjqBfQ0gVOIDzKBj3XN64Hw2uD5EC/dYIfRg= X-Gm-Gg: AYBFou3LPxDg2u8Luk9HMDHamqDjHrinzCLRNCANVGcuOIybdVC0uuuiQDNpctldNz2 xYdhhfBLrabyZieJfnvzyfh1feXmE/WoyggFBkZn3VNYMy3PFMz6x+vz54QV7okYRXOTDOO/BR8 aDpkE+IQ4yBrYLGdkIm1CE6FpsNxrhZMXEgKZCtHbDoMI5M6xgcCEt5xYuI5lLqsf6J9u1oy44r p404lzg9JOXlx5U1pXNrz+VJM+di0Tj9acWY1LGdgug8X/NwSy/jdxX0IM1RRGj98ft11dmU72D XHjbHmB4CGHqTCTPOyNAj7mQPmGpBO02IBXUgJvpt38QtXuYkND35U4mEjZ9AtLCRQzlJlNteun EOLaGBHlbB1zKBMP/mXK/zCwdX04+XNraOYjzZ7d5HLZIC+CPLSZrwEtJIjC7H/MI+sMfUuUOk5 nu2UrIn2tzZWaWyoKpCZHtWX+iaCgxpN31xM9FWczMLxUPXrlsFQcpcM/tfVDzMAaPZDvdksbee ZaqoXZ/sBQdj1fvcQEtv6JHs27s9GJJbH8b8/xEKjRUbzc= X-Received: by 2002:a05:6402:1599:b0:6aa:936f:5d2c with SMTP id 4fb4d7f45d1cf-6aacc83e324mr889306a12.23.1790234095400; Thu, 24 Sep 2026 00:14:55 -0700 (PDT) Received: from janlin-02.home.wermuth.pl (109-206-198-27.host.skynet.net.pl. [109.206.198.27]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-6aab38a9756sm3306589a12.25.2026.09.24.00.14.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Sep 2026 00:14:54 -0700 (PDT) From: Adam Wermuth To: Heiko Stuebner Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Adam Wermuth Subject: [PATCH 3/3] arm64: dts: rockchip: Add PWM fan to Radxa ROCK 3B Date: Thu, 24 Sep 2026 09:14:45 +0200 Message-ID: <20260924071445.441822-4-adam@wermuth.pl> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260924071445.441822-1-adam@wermuth.pl> References: <20260924071445.441822-1-adam@wermuth.pl> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260924_001457_474276_CBDB83FD X-CRM114-Status: GOOD ( 12.42 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The ROCK 3B has a 2-pin fan header powered from vcc5v0_sys and switched by a MOSFET driven from PWM8 (pwm8m0 pins). Enable the PWM controller, describe the fan as a pwm-fan cooling device and add active trip points to the CPU thermal zone: - 50 C: fan at 25% - 60 C: fan at 50-75% - 70 C: fan at 100% each with 5 C hysteresis. The existing passive and critical trip points are left unchanged. Signed-off-by: Adam Wermuth --- .../boot/dts/rockchip/rk3568-rock-3b.dts | 51 +++++++++++++++++++ 1 file changed, 51 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts index 908bb4425e81..815f67988ab7 100644 --- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts +++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3b.dts @@ -24,6 +24,14 @@ chosen { stdout-path = "serial2:1500000n8"; }; + fan: fan { + compatible = "pwm-fan"; + cooling-levels = <0 64 128 192 255>; + fan-supply = <&vcc5v0_sys>; + pwms = <&pwm8 0 10000 0>; + #cooling-cells = <2>; + }; + hdmi-con { compatible = "hdmi-connector"; type = "a"; @@ -200,6 +208,45 @@ &cpu3 { cpu-supply = <&vdd_cpu>; }; +&cpu_thermal { + trips { + cpu_fan0: cpu-fan0 { + hysteresis = <5000>; + temperature = <50000>; + type = "active"; + }; + + cpu_fan1: cpu-fan1 { + hysteresis = <5000>; + temperature = <60000>; + type = "active"; + }; + + cpu_fan2: cpu-fan2 { + hysteresis = <5000>; + temperature = <70000>; + type = "active"; + }; + }; + + cooling-maps { + map1 { + trip = <&cpu_fan0>; + cooling-device = <&fan THERMAL_NO_LIMIT 1>; + }; + + map2 { + trip = <&cpu_fan1>; + cooling-device = <&fan 2 3>; + }; + + map3 { + trip = <&cpu_fan2>; + cooling-device = <&fan 4 THERMAL_NO_LIMIT>; + }; + }; +}; + &gmac0 { assigned-clocks = <&cru SCLK_GMAC0_RX_TX>, <&cru SCLK_GMAC0>; assigned-clock-parents = <&cru SCLK_GMAC0_RGMII_SPEED>, <&cru CLK_MAC0_2TOP>; @@ -708,6 +755,10 @@ &pmu_io_domains { status = "okay"; }; +&pwm8 { + status = "okay"; +}; + &saradc { vref-supply = <&vcca_1v8>; status = "okay"; -- 2.43.0