From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> To: u.kleine-koenig@pengutronix.de, linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>, Nicolas Saenz Julienne <nsaenzjulienne@suse.de> Cc: devel@driverdev.osuosl.org, linux-pwm@vger.kernel.org, f.fainelli@gmail.com, devicetree@vger.kernel.org, sboyd@kernel.org, gregkh@linuxfoundation.org, linus.walleij@linaro.org, dmitry.torokhov@gmail.com, linux-gpio@vger.kernel.org, andy.shevchenko@gmail.com, bcm-kernel-feedback-list@broadcom.com, wahrenst@gmx.net, p.zabel@pengutronix.de, linux-input@vger.kernel.org, bgolaszewski@baylibre.com, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rpi-kernel@lists.infradead.org Subject: [PATCH v5 10/11] DO NOT MERGE: ARM: dts: Add RPi's official PoE hat support Date: Mon, 23 Nov 2020 19:38:31 +0100 Message-ID: <20201123183833.18750-11-nsaenzjulienne@suse.de> (raw) In-Reply-To: <20201123183833.18750-1-nsaenzjulienne@suse.de> This is an example on how to enable the fan on top of RPi's official PoE hat. Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de> --- Changes since v1: - Update patch to use 2 pwm cells arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 54 +++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts index 403bacf986eb..9ae44620c5b8 100644 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts @@ -5,6 +5,7 @@ #include "bcm283x-rpi-usb-peripheral.dtsi" #include <dt-bindings/reset/raspberrypi,firmware-reset.h> +#include <dt-bindings/pwm/raspberrypi,firmware-poe-pwm.h> / { compatible = "raspberrypi,4-model-b", "brcm,bcm2711"; @@ -68,6 +69,54 @@ sd_vcc_reg: sd_vcc_reg { enable-active-high; gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>; }; + + fan: pwm-fan { + compatible = "pwm-fan"; + cooling-levels = <0 50 150 255>; + #cooling-cells = <2>; + pwms = <&fwpwm RASPBERRYPI_FIRMWARE_PWM_POE 80000>; + }; + + thermal-zones { + cpu_thermal: cpu-thermal { + trips { + threshold: trip-point@0 { + temperature = <45000>; + hysteresis = <5000>; + type = "active"; + }; + + target: trip-point@1 { + temperature = <50000>; + hysteresis = <2000>; + type = "active"; + }; + + cpu_hot: cpu_hot@0 { + temperature = <55000>; + hysteresis = <2000>; + type = "active"; + }; + }; + + cooling-maps { + map0 { + trip = <&threshold>; + cooling-device = <&fan 0 1>; + }; + + map1 { + trip = <&target>; + cooling-device = <&fan 1 2>; + }; + + map2 { + trip = <&cpu_hot>; + cooling-device = <&fan 2 3>; + }; + }; + }; + }; }; &ddc0 { @@ -103,6 +152,11 @@ reset: reset { compatible = "raspberrypi,firmware-reset"; #reset-cells = <1>; }; + + fwpwm: pwm { + compatible = "raspberrypi,firmware-poe-pwm"; + #pwm-cells = <2>; + }; }; &gpio { -- 2.29.2 _______________________________________________ devel mailing list devel@linuxdriverproject.org http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
next prev parent reply index Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-23 18:38 [PATCH v5 00/11] Raspberry Pi PoE HAT fan support Nicolas Saenz Julienne 2020-11-23 18:38 ` [PATCH v5 01/11] firmware: raspberrypi: Keep count of all consumers Nicolas Saenz Julienne 2020-12-02 17:26 ` Florian Fainelli 2020-12-03 8:05 ` Bartosz Golaszewski 2020-12-03 8:53 ` Nicolas Saenz Julienne 2020-11-23 18:38 ` [PATCH v5 02/11] firmware: raspberrypi: Introduce devm_rpi_firmware_get() Nicolas Saenz Julienne 2020-12-02 17:27 ` Florian Fainelli 2020-11-23 18:38 ` [PATCH v5 03/11] clk: bcm: rpi: Release firmware handle on unbind Nicolas Saenz Julienne 2020-12-02 17:28 ` Florian Fainelli 2020-11-23 18:38 ` [PATCH v5 04/11] gpio: raspberrypi-exp: " Nicolas Saenz Julienne 2020-12-02 17:29 ` Florian Fainelli 2020-11-23 18:38 ` [PATCH v5 05/11] reset: raspberrypi: " Nicolas Saenz Julienne 2020-12-02 17:29 ` Florian Fainelli 2020-11-23 18:38 ` [PATCH v5 06/11] soc: bcm: raspberrypi-power: " Nicolas Saenz Julienne 2020-12-02 17:55 ` Florian Fainelli 2020-11-23 18:38 ` [PATCH v5 07/11] staging: vchiq: " Nicolas Saenz Julienne 2020-12-02 17:56 ` Florian Fainelli 2020-11-23 18:38 ` [PATCH v5 08/11] input: raspberrypi-ts: Release firmware handle when not needed Nicolas Saenz Julienne 2020-12-02 6:03 ` Dmitry Torokhov 2020-12-03 14:52 ` Nicolas Saenz Julienne 2020-11-23 18:38 ` [PATCH v5 09/11] dt-bindings: pwm: Add binding for RPi firmware PWM bus Nicolas Saenz Julienne 2020-11-23 18:38 ` Nicolas Saenz Julienne [this message] 2020-11-23 18:38 ` [PATCH v5 11/11] pwm: Add Raspberry Pi Firmware based " Nicolas Saenz Julienne 2020-12-09 10:42 ` Nicolas Saenz Julienne
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