2019-09-19 14:43:19 +00:00
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From 21e4c9306bd20ab4e02f90cd452d90bc4e4a0a98 Mon Sep 17 00:00:00 2001
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2019-07-09 18:32:28 +00:00
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Wed, 3 Jul 2019 20:37:14 +0100
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2019-12-23 12:42:55 +00:00
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Subject: [PATCH] overlays: Correct gpio-fan gpio flags for 4.19
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2019-07-09 18:32:28 +00:00
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The gpio-fan overlay was submitted for the 4.14 kernel where the second
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value in the Device Tree gpios declaration was ignored (thanks to an
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old-style driver), allowing the fan-control output to be active-high
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even though the declaration appears to request it be active-low.
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The gpio-fan driver in 4.19 uses GPIO descriptors and honours the
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active-low flag that the overlay (accidentally?) supplies.
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Change/correct the flags field to mark the GPIO as active-high.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/gpio-fan-overlay.dts | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts
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@@ -45,7 +45,7 @@
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__overlay__ {
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fan0: gpio-fan@0 {
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compatible = "gpio-fan";
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- gpios = <&gpio 12 1>;
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+ gpios = <&gpio 12 0>;
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gpio-fan,speed-map = <0 0>,
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<5000 1>;
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#cooling-cells = <2>;
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