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 510B8C982FA for ; Tue, 22 Sep 2026 08:02:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ipAcKUUIRIpMoUB8GGWYokQbAqIo+fZD6466ZWfeZZ0=; b=MwAh5qNyM6Xzzw Xf4bUApZSjv/3Fe7jEWhk6DQfGF2uSBkPp2vWobcUNOCEqYe/Fshqib41T93ulJX9QosLw2OTM2Bo eAFu5mUoMbJi02iPvw1LkxfJbiKdbyla5KbYusXlqXPuBnvzIQX7flHrFmPLAjZSmXVNmkDLHEP+/ eqfQFzcC0h+wetWTsu/K1Dnw3bopmrNLOC1h3CZV5ZeT/nsEFlBgA4ytesujLbo9XoYSgr4OU9bPd RU9+r/M+DVmoAwZMKnTyVBNaQe7ZNLhFigesOI4E0chLu7LdzpBy6SgZDu7A0rtdWRT7nTymHwnkT ROFpFHKAXiXU+72KLR4A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8vSZ-00000004b76-4AfK; Tue, 22 Sep 2026 08:02:39 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x8vRi-00000004aPB-3waR for linux-rockchip@bombadil.infradead.org; Tue, 22 Sep 2026 08:01:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; 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; bh=k8SSEreitnBFuEXQj3F3dce2S1yQFmhptrw7zyYrACU=; b=cZPApCYvKyQbhhvW+j3EznfcTz KJpFv7JMnvWqR5dpJrXQDS/3t2g5u+dBYtCZ1h1RCN0iVObqXelqnFvUOA7ggCiBrDNgwEILulSUH OSaALXzUQ5TH93FgbmVBeCg5S42EBZZHfydKzSaAqVGnOR2CzIWe1RDVroOrzzcHTn4ebQjURBdQN ORI/L8wMZm4cxDsIXjxKGaUrtK6b/zgkmrYu9GV3rMf460jsm2ZTHyAEAQRYYn5O6tbO8/uBCRcrd kzuy32rIdfnazBrJ4AFE8iSZjGr5SvUlzA3ZWbtKU/zQsGMW7CWseSNOAPgrGkbYrf/fhWjm5jdkA KwBsz0QQ==; Received: from mail-wm2-x11.google.com ([2a00:1450:4864:31::11]) by desiato.infradead.org with esmtps (Exim 4.99.2 #2 (Red Hat Linux)) id 1x8vRf-0000000DEj3-0ktv for linux-rockchip@lists.infradead.org; Tue, 22 Sep 2026 08:01:45 +0000 Received: by mail-wm2-x11.google.com with SMTP id 5b1f17b1804b1-49e6baf77afso1695685e9.2 for ; Tue, 22 Sep 2026 01:01:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1790064101; x=1790668901; 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=k8SSEreitnBFuEXQj3F3dce2S1yQFmhptrw7zyYrACU=; b=ofMQn6m8dp7GTbkjmxzTzjCUIjnF6sqKWhw2ibo7ETDlf6/UUzmjbVYFay3F9+YUTH JbYLrvpD2jZleSDtJ4PpT0g3QiCmPLxpniuORsvLBlBHLS9vQl3o+hODKiq5uLH99i47 Uj/7+anrHpa0m4ylh6rtllFZwFa5W9aRiXitT9gHGP9PDdzoIqLYIt5Sn9BY17F0xzzX WBQLDBKC+C1P8fTgxXJrx7Yx3uyW1g2xFuE3UDB8Zk3eT84KFyfMlvb5keH4XbUvU4aI 4XVeXr/B/QK7z4nlCriN/n2ZojwPANCdzG1Uio5PSnkHX6BM/IT58VIgPMxHFknub2QK f3Tw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1790064101; x=1790668901; 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=k8SSEreitnBFuEXQj3F3dce2S1yQFmhptrw7zyYrACU=; b=aNOfEMCZ1+/VIJCYMLLwjWdDQ6qROdB0C80Ba6iztXLmmOv7diqCy90fFQH924uDH2 0MPVjkghQiEzkaDkjlzEyh4sKC6UH32tsOhtjnF1bVgdEzEeGE0Dm2CubW56kxAfvYk5 qOj1ikd3SjG6+lbBzQa9tUnAn5SGyDqC5ezjslgds2yCWHjq69KW1ZqLW5PWfm7WIN2j YTEDyPjOtPPTbsSywTO8Xu4CIsJTwbl0vmsLIU/ZYiVaHATIQ2IKLYX9bNp8qK0Si/om naZTmcS1j51HPDbB+1qM8k/uvR2Z3j6HTwd4kuPrg9RxDThVW5wA/As/0pUSObEMZnlS D6Gg== X-Forwarded-Encrypted: i=1; AKwUvBw3WyojvogeCj3Y3uRWyfLzp/Qsdl7oo7AU0Rf8fDuO+6hBCXZt2a1OpaCugaL1GscRcocCwGn4v4b+t8y6og==@lists.infradead.org X-Gm-Message-State: AFuF++nW71sB3wnV7E1NuxWnXaMeasa76SeLYZOKG3noWdHlk15nYf6U w3Hf0CCIKHvaFojcF9MDDAx3nherTTV9HWzK81AY7q4CHZVBMws8qGT/ X-Gm-Gg: AYBFou3FwKjgXbMBqDRLUAk9cZsoDOCIWg4AeQ/e/xPrCuPVPLOVOQK35NGm7M9xKQj HWNmeYa0oAa5hx0ZKr2AQyc757t8GLmrCPyXZc/7LnsqUQzf/+y6EXE1uRxCUVI7Uq6vPzSLZPk YA5j5DtIlN80tYlev3PTcZlVbcuucwiASud6kWh2FcijO48SFzgG3/5LZuKXndijmdV2osGF080 +YNmIUoycRCMpHIzXA3XwPOc8duHvOqUMVY+paaqRh/J+0rvGAV2rkGr5z1e+i3KZvSGIrhhpGp TuaE0Bi7lRSVOQvLJgO1V4EgBX64tUToBlVdYMv0fwbyP4tGqYwT8/e3Q+WnDDCXZaoobieW5fY f8KdtMTVbpQcwytNn+8ogTW2n56WcLxogRjr5a7TZIAXs1ufOPBQSOY2zmFgmup8J0dPWRcig3O 2f5ueaUGBrodTmRgHXa9oQiOeucNcUPULQ9Yq7JOAUDov2FhSkkZmA5s/fLoAI9ZzgAUi8VrH87 6Q2uyFMqwf1E9VV6lcxuvjL2BCy5d4kn7oBGb68EHBe1gsdtGvfx6Hd8EQKFoRHv8t6oUAO5Vj/ Mx0= X-Received: by 2002:a05:600c:6992:b0:49b:9241:7ff0 with SMTP id 5b1f17b1804b1-49fc7b7a756mr226941795e9.0.1790064100738; Tue, 22 Sep 2026 01:01:40 -0700 (PDT) Received: from OrangePi5-Plus.BB-HOME (20014C4E1B80530056971C6280202175.dsl.pool.telekom.hu. [2001:4c4e:1b80:5300:5697:1c62:8020:2175]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49fdaaf97e2sm18248625e9.2.2026.09.22.01.01.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 22 Sep 2026 01:01:40 -0700 (PDT) From: Igor Paunovic To: Tomeu Vizoso , Oded Gabbay , Heiko Stuebner Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jeff Hugo , Robert Foss , Sidong Yang , Diederik de Haas , Sebastian Reichel , Jiaxing Hu , Nicolas Dufresne , Jonas Karlman , Guangshuo Li , =?UTF-8?q?H=C3=BCseyin=20BIYIK?= , dri-devel@lists.freedesktop.org, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Igor Paunovic Subject: [PATCH v2 11/11] arm64: dts: rockchip: rk3588: add passive cooling to the NPU thermal zone Date: Tue, 22 Sep 2026 10:01:14 +0200 Message-ID: <20260922080114.44662-12-royalnet026@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260922080114.44662-1-royalnet026@gmail.com> References: <20260922080114.44662-1-royalnet026@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260922_090144_212284_6F4834EE X-CRM114-Status: GOOD ( 17.09 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org The NPU zone has had only a critical trip at 115 degrees, which is a shutdown and not a cooling policy. Now that the NPU can be throttled by capping its clock, give the zone a passive trip and a cooling map, in the same shape and at the same temperatures as the GPU zone right above it: 85 degrees with 2 degrees of hysteresis, and a 100 ms passive polling delay. The #cooling-cells property goes on rknn_core_0, the first of the three core nodes, as the one node that stands for the shared clock as a cooling device. The other two cores have no clock of their own and cannot be throttled independently of it. The cooling map is inert until the driver registers a cooling device: thermal_of_should_bind() only resolves a map entry once a matching cdev appears, so this patch on its own changes nothing but the trip point. On a board that leaves the NPU disabled the passive trip has no cooling device to act on and only changes the polling rate above 85 degrees, as the GPU zone's trip already does on a board without the GPU. The thermal path itself has not been exercised on the board this was written on. Reaching 85 degrees on an NPU workload with the fan curve here has not been possible, so what is verified is that the zone parses and binds, not that throttling engages at temperature. Assisted-by: LLM checkpatch dtbs_check Signed-off-by: Igor Paunovic --- v2: commit message only: wording for the shared table, and a sentence on boards that leave the NPU disabled. The diff is unchanged. arch/arm64/boot/dts/rockchip/rk3588-base.dtsi | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi index 376ad04e07869..c3d22b08f415b 100644 --- a/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3588-base.dtsi @@ -1162,6 +1162,7 @@ rknn_core_0: npu@fdab0000 { clock-names = "aclk", "hclk", "npu", "pclk"; assigned-clocks = <&scmi_clk SCMI_CLK_NPU>; assigned-clock-rates = <200000000>; + #cooling-cells = <2>; resets = <&cru SRST_A_RKNN0>, <&cru SRST_H_RKNN0>; reset-names = "srst_a", "srst_h"; power-domains = <&power RK3588_PD_NPUTOP>; @@ -3212,17 +3213,31 @@ map0 { }; npu_thermal: npu-thermal { - polling-delay-passive = <0>; + polling-delay-passive = <100>; polling-delay = <0>; thermal-sensors = <&tsadc 6>; trips { + npu_alert: npu-alert { + temperature = <85000>; + hysteresis = <2000>; + type = "passive"; + }; + npu_crit: npu-crit { temperature = <115000>; hysteresis = <0>; type = "critical"; }; }; + + cooling-maps { + map0 { + trip = <&npu_alert>; + cooling-device = + <&rknn_core_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>; + }; + }; }; }; -- 2.43.0 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip