diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0167-BCM270X_DT-Add-gpio-fan-overlay.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0167-BCM270X_DT-Add-gpio-fan-overlay.patch | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0167-BCM270X_DT-Add-gpio-fan-overlay.patch b/target/linux/brcm2708/patches-4.19/950-0167-BCM270X_DT-Add-gpio-fan-overlay.patch deleted file mode 100644 index f0cd000a2e..0000000000 --- a/target/linux/brcm2708/patches-4.19/950-0167-BCM270X_DT-Add-gpio-fan-overlay.patch +++ /dev/null @@ -1,114 +0,0 @@ -From 9762b3a015886c42941f535e688ffac1f56e35aa Mon Sep 17 00:00:00 2001 -From: Phil Elwell <phil@raspberrypi.org> -Date: Tue, 18 Sep 2018 11:08:07 +0100 -Subject: [PATCH 167/806] BCM270X_DT: Add gpio-fan overlay - -Signed-off-by: Phil Elwell <phil@raspberrypi.org> ---- - arch/arm/boot/dts/overlays/Makefile | 1 + - arch/arm/boot/dts/overlays/README | 8 +++ - .../boot/dts/overlays/gpio-fan-overlay.dts | 71 +++++++++++++++++++ - 3 files changed, 80 insertions(+) - create mode 100644 arch/arm/boot/dts/overlays/gpio-fan-overlay.dts - ---- a/arch/arm/boot/dts/overlays/Makefile -+++ b/arch/arm/boot/dts/overlays/Makefile -@@ -33,6 +33,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \ - fe-pi-audio.dtbo \ - goodix.dtbo \ - googlevoicehat-soundcard.dtbo \ -+ gpio-fan.dtbo \ - gpio-ir.dtbo \ - gpio-ir-tx.dtbo \ - gpio-key.dtbo \ ---- a/arch/arm/boot/dts/overlays/README -+++ b/arch/arm/boot/dts/overlays/README -@@ -541,6 +541,14 @@ Load: dtoverlay=googlevoicehat-soundca - Params: <None> - - -+Name: gpio-fan -+Info: Configure a GPIO pin to control a cooling fan. -+Load: dtoverlay=gpio-fan,<param>=<val> -+Params: gpiopin GPIO used to control the fan (default 12) -+ temp Temperature at which the fan switches on, in -+ millicelcius (default 55000) -+ -+ - Name: gpio-ir - Info: Use GPIO pin as rc-core style infrared receiver input. The rc-core- - based gpio_ir_recv driver maps received keys directly to a ---- /dev/null -+++ b/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts -@@ -0,0 +1,71 @@ -+/* -+ * Overlay for the Raspberry Pi GPIO Fan @ BCM GPIO12. -+ * Optional parameters: -+ * - "gpiopin" - default GPIO12 -+ * - "temp" - default 55000 -+ * Requires: -+ * - kernel configurations: CONFIG_SENSORS_GPIO_FAN=m and CONFIG_SENSORS_PWM_FAN=m; -+ * - kernel rebuid; -+ * - DC Fan connected to GPIO via a N-MOSFET (2N7002) -+ * -+ * ┌─────────────────────┐ -+ * │Fan negative terminal│ -+ * └┬────────────────────┘ -+ * │ -+ * │──┘ -+ * [GPIO12]──────┤ │<─┐ 2N7002 -+ * │──┤ -+ * │ -+ * ─┴─ -+ * GND -+ * -+ * sudo dtc -W no-unit_address_vs_reg -@ -I dts -O dtb -o /boot/overlays/gpio-fan.dtbo gpio-fan.dts -+ * sudo nano /boot/config.txt add "dtoverlay=gpio-fan" or "dtoverlay=gpio-fan,gpiopin=12,temp=45000" -+ * or -+ * sudo sh -c "echo '\n# Enable PI GPIO-Fan\ndtoverlay=gpio-fan\n' >> /boot/config.txt" -+ * sudo sh -c "echo '\n# Enable PI GPIO-Fan\ndtoverlay=gpio-fan,gpiopin=12\n' >> /boot/config.txt" -+ * -+ */ -+/dts-v1/; -+/plugin/; -+ -+/ { -+ compatible = "brcm,bcm2708"; -+ -+ fragment@0 { -+ target-path = "/"; -+ __overlay__ { -+ fan0: gpio-fan@0 { -+ compatible = "gpio-fan"; -+ gpios = <&gpio 12 1>; -+ gpio-fan,speed-map = <0 0>, -+ <5000 1>; -+ #cooling-cells = <2>; -+ }; -+ }; -+ }; -+ -+ fragment@1 { -+ target = <&cpu_thermal>; -+ polling-delay = <2000>; /* milliseconds */ -+ __overlay__ { -+ trips { -+ cpu_hot: trip-point@0 { -+ temperature = <55000>; /* (millicelsius) Fan started at 55°C */ -+ hysteresis = <5000>; /* (millicelsius) Fan stopped at 50°C */ -+ type = "active"; -+ }; -+ }; -+ cooling-maps { -+ map0 { -+ trip = <&cpu_hot>; -+ cooling-device = <&fan0 1 1>; -+ }; -+ }; -+ }; -+ }; -+ __overrides__ { -+ gpiopin = <&fan0>,"gpios:4", <&fan0>,"brcm,pins:0"; -+ temp = <&cpu_hot>,"temperature:0"; -+ }; -+}; |