From a6593a1bc8708f73c424c05c64d49d3868e1bdd5 Mon Sep 17 00:00:00 2001 From: Serge Schneider Date: Tue, 2 Oct 2018 17:13:48 +0100 Subject: [PATCH] overlays: add overrides for PoE HAT fan control Signed-off-by: Serge Schneider --- arch/arm/boot/dts/overlays/README | 13 ++++++++++--- arch/arm/boot/dts/overlays/rpi-poe-overlay.dts | 10 ++++++++++ 2 files changed, 20 insertions(+), 3 deletions(-) --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -1565,9 +1565,16 @@ Params: touchscreen-size-x Touchscr Name: rpi-poe -Info: Raspberry Pi POE HAT -Load: dtoverlay=rpi-poe -Params: +Info: Raspberry Pi PoE HAT fan +Load: dtoverlay=rpi-poe,[=] +Params: poe_fan_temp0 Temperature (in millicelcius) at which the fan + turns on (default 50000) + poe_fan_temp0_hyst Temperature delta (in millicelcius) at which + the fan turns off (default 5000) + poe_fan_temp1 Temperature (in millicelcius) at which the fan + speeds up (default 55000) + poe_fan_temp1_hyst Temperature delta (in millicelcius) at which + the fan slows down (default 5000) Name: rpi-proto --- a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts +++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts @@ -50,4 +50,14 @@ }; }; }; + + fragment@2 { + target-path = "/__overrides__"; + __overlay__ { + poe_fan_temp0 = <&trip0>,"temperature:0"; + poe_fan_temp0_hyst = <&trip0>,"hysteresis:0"; + poe_fan_temp1 = <&trip1>,"temperature:0"; + poe_fan_temp1_hyst = <&trip1>,"hysteresis:0"; + }; + }; };