diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0598-overlays-Correct-gpio-fan-gpio-flags-for-4.19.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0598-overlays-Correct-gpio-fan-gpio-flags-for-4.19.patch | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0598-overlays-Correct-gpio-fan-gpio-flags-for-4.19.patch b/target/linux/brcm2708/patches-4.19/950-0598-overlays-Correct-gpio-fan-gpio-flags-for-4.19.patch new file mode 100644 index 0000000000..765874ef29 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0598-overlays-Correct-gpio-fan-gpio-flags-for-4.19.patch @@ -0,0 +1,30 @@ +From 21e4c9306bd20ab4e02f90cd452d90bc4e4a0a98 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Wed, 3 Jul 2019 20:37:14 +0100 +Subject: [PATCH] overlays: Correct gpio-fan gpio flags for 4.19 + +The gpio-fan overlay was submitted for the 4.14 kernel where the second +value in the Device Tree gpios declaration was ignored (thanks to an +old-style driver), allowing the fan-control output to be active-high +even though the declaration appears to request it be active-low. +The gpio-fan driver in 4.19 uses GPIO descriptors and honours the +active-low flag that the overlay (accidentally?) supplies. + +Change/correct the flags field to mark the GPIO as active-high. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/overlays/gpio-fan-overlay.dts | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +--- a/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts ++++ b/arch/arm/boot/dts/overlays/gpio-fan-overlay.dts +@@ -45,7 +45,7 @@ + __overlay__ { + fan0: gpio-fan@0 { + compatible = "gpio-fan"; +- gpios = <&gpio 12 1>; ++ gpios = <&gpio 12 0>; + gpio-fan,speed-map = <0 0>, + <5000 1>; + #cooling-cells = <2>; |