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Sun, 26 Oct 2025 12:49:03 -0700 (PDT) Received: from orange.info ([2a02:8010:6606:0:8fa:2ba2:6886:7fe4]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-475dd05098dsm45244265e9.5.2025.10.26.12.49.02 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sun, 26 Oct 2025 12:49:02 -0700 (PDT) From: Hugh Cole-Baker To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner Cc: Hugh Cole-Baker , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: dts: rockchip: pwm-fan overlay for NanoPC-T6 Date: Sun, 26 Oct 2025 19:48:40 +0000 Message-ID: <20251026194858.92461-1-sigmaris@gmail.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit FriendlyELEC offers an optional heatsink and fan addon for the NanoPC-T6 and T6 LTS. Add an overlay which can be applied if the fan is fitted and configures the fan as an active cooling device for the SoC package. Signed-off-by: Hugh Cole-Baker --- FriendlyELEC heatsink with fan addon: https://www.friendlyelec.com/index.php?route=product/product&product_id=305 Vendor DT with trip points and PWM duty cycle values: https://github.com/friendlyarm/kernel-rockchip/blob/4944602540b62f5aad139fe602a76cf7c3176128/arch/arm64/boot/dts/rockchip/rk3588-nanopi6-rev01.dts#L75-L90 arch/arm64/boot/dts/rockchip/Makefile | 9 +++ .../dts/rockchip/rk3588-nanopc-t6-fan.dtso | 78 +++++++++++++++++++ 2 files changed, 87 insertions(+) create mode 100644 arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6-fan.dtso diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile index 4cd8ef607f55c..7a67b68a6bb03 100644 --- a/arch/arm64/boot/dts/rockchip/Makefile +++ b/arch/arm64/boot/dts/rockchip/Makefile @@ -178,6 +178,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-jaguar-ethernet-switch.dtbo dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-jaguar-pre-ict-tester.dtbo dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-mnt-reform2.dtb dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-nanopc-t6.dtb +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-nanopc-t6-fan.dtbo dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-nanopc-t6-lts.dtb dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-ok3588-c.dtb dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-orangepi-5-max.dtb @@ -271,6 +272,14 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-jaguar-pre-ict-tester.dtb rk3588-jaguar-pre-ict-tester-dtbs := rk3588-jaguar.dtb \ rk3588-jaguar-pre-ict-tester.dtbo +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-nanopc-t6-with-fan.dtb +rk3588-nanopc-t6-with-fan-dtbs := rk3588-nanopc-t6.dtb \ + rk3588-nanopc-t6-fan.dtbo + +dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-nanopc-t6-lts-with-fan.dtb +rk3588-nanopc-t6-lts-with-fan-dtbs := rk3588-nanopc-t6-lts.dtb \ + rk3588-nanopc-t6-fan.dtbo + dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-rock-5b-pcie-ep.dtb rk3588-rock-5b-pcie-ep-dtbs := rk3588-rock-5b.dtb \ rk3588-rock-5b-pcie-ep.dtbo diff --git a/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6-fan.dtso b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6-fan.dtso new file mode 100644 index 0000000000000..08c4782fb4148 --- /dev/null +++ b/arch/arm64/boot/dts/rockchip/rk3588-nanopc-t6-fan.dtso @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/dts-v1/; +/plugin/; + +#include + +&{/} { + fan: pwm-fan { + compatible = "pwm-fan"; + cooling-levels = <0 35 64 100 150 255>; + fan-supply = <&vcc5v0_sys>; + pwms = <&pwm1 0 50000 0>; + #cooling-cells = <2>; + }; +}; + +&package_thermal { + polling-delay = <1000>; + + trips { + package_fan0: package-fan0 { + temperature = <50000>; + hysteresis = <2000>; + type = "active"; + }; + + package_fan1: package-fan1 { + temperature = <55000>; + hysteresis = <2000>; + type = "active"; + }; + + package_fan2: package-fan2 { + temperature = <60000>; + hysteresis = <2000>; + type = "active"; + }; + + package_fan3: package-fan3 { + temperature = <65000>; + hysteresis = <2000>; + type = "active"; + }; + + package_fan4: package-fan4 { + temperature = <70000>; + hysteresis = <2000>; + type = "active"; + }; + }; + + cooling-maps { + map0 { + trip = <&package_fan0>; + cooling-device = <&fan THERMAL_NO_LIMIT 1>; + }; + + map1 { + trip = <&package_fan1>; + cooling-device = <&fan 2 3>; + }; + + map2 { + trip = <&package_fan2>; + cooling-device = <&fan 3 4>; + }; + + map3 { + trip = <&package_fan3>; + cooling-device = <&fan 4 5>; + }; + + map4 { + trip = <&package_fan4>; + cooling-device = <&fan 5 THERMAL_NO_LIMIT>; + }; + }; +}; -- 2.50.1 (Apple Git-155)