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ARM: dts: bcm2837: Fix polarity of wifi reset GPIOs

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commit e25b6783c7 upstream.

The commit b1b8f45b31 ("ARM: dts: bcm2837: Add missing GPIOs of Expander")
introduced a wifi power sequence. Unfortunately the polarity of the reset
GPIOs were wrong and broke the wifi support on Raspberry Pi 3 B and
later in 3 B+. This wasn't discovered before since the power sequence
takes only effect in case the relevant MMC driver is compiled as a module.

Fixes: b1b8f45b31 ("ARM: dts: bcm2837: Add missing GPIOs of Expander")
Cc: stable@vger.kernel.org
Reported-by: Matthias Lueschner <lueschem@gmail.com>
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911443
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Stefan Wahren 2018-12-03 19:37:08 +01:00 committed by Greg Kroah-Hartman
parent 0017698d34
commit bea8a160c6
2 changed files with 2 additions and 2 deletions
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2
arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts
View File

@ -31,7 +31,7 @@ pwr {
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&expgpio 1 GPIO_ACTIVE_HIGH>;
reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
};
};

2
arch/arm/boot/dts/bcm2837-rpi-3-b.dts
View File

@ -26,7 +26,7 @@ act {
wifi_pwrseq: wifi-pwrseq {
compatible = "mmc-pwrseq-simple";
reset-gpios = <&expgpio 1 GPIO_ACTIVE_HIGH>;
reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
};
};