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51 lines
1.7 KiB
Diff
51 lines
1.7 KiB
Diff
From a6593a1bc8708f73c424c05c64d49d3868e1bdd5 Mon Sep 17 00:00:00 2001
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From: Serge Schneider <serge@raspberrypi.org>
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Date: Tue, 2 Oct 2018 17:13:48 +0100
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Subject: [PATCH] overlays: add overrides for PoE HAT fan control
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Signed-off-by: Serge Schneider <serge@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/README | 13 ++++++++++---
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arch/arm/boot/dts/overlays/rpi-poe-overlay.dts | 10 ++++++++++
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2 files changed, 20 insertions(+), 3 deletions(-)
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -1565,9 +1565,16 @@ Params: touchscreen-size-x Touchscr
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Name: rpi-poe
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-Info: Raspberry Pi POE HAT
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-Load: dtoverlay=rpi-poe
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-Params: <None>
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+Info: Raspberry Pi PoE HAT fan
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+Load: dtoverlay=rpi-poe,<param>[=<val>]
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+Params: poe_fan_temp0 Temperature (in millicelcius) at which the fan
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+ turns on (default 50000)
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+ poe_fan_temp0_hyst Temperature delta (in millicelcius) at which
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+ the fan turns off (default 5000)
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+ poe_fan_temp1 Temperature (in millicelcius) at which the fan
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+ speeds up (default 55000)
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+ poe_fan_temp1_hyst Temperature delta (in millicelcius) at which
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+ the fan slows down (default 5000)
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Name: rpi-proto
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--- a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts
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@@ -50,4 +50,14 @@
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};
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};
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};
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+
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+ fragment@2 {
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+ target-path = "/__overrides__";
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+ __overlay__ {
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+ poe_fan_temp0 = <&trip0>,"temperature:0";
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+ poe_fan_temp0_hyst = <&trip0>,"hysteresis:0";
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+ poe_fan_temp1 = <&trip1>,"temperature:0";
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+ poe_fan_temp1_hyst = <&trip1>,"hysteresis:0";
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+ };
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+ };
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};
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