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Commit bea8a160 authored by Stefan Wahren's avatar Stefan Wahren Committed by Greg Kroah-Hartman
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ARM: dts: bcm2837: Fix polarity of wifi reset GPIOs



commit e25b6783c7b1bb79103d4617336879423f86b05e upstream.

The commit b1b8f45b ("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: b1b8f45b ("ARM: dts: bcm2837: Add missing GPIOs of Expander")
Cc: stable@vger.kernel.org
Reported-by: default avatarMatthias Lueschner <lueschem@gmail.com>
Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911443


Signed-off-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: default avatarEric Anholt <eric@anholt.net>
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 0017698d
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+1 −1
Original line number Diff line number Diff line
@@ -31,7 +31,7 @@

	wifi_pwrseq: wifi-pwrseq {
		compatible = "mmc-pwrseq-simple";
		reset-gpios = <&expgpio 1 GPIO_ACTIVE_HIGH>;
		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
	};
};

+1 −1
Original line number Diff line number Diff line
@@ -26,7 +26,7 @@

	wifi_pwrseq: wifi-pwrseq {
		compatible = "mmc-pwrseq-simple";
		reset-gpios = <&expgpio 1 GPIO_ACTIVE_HIGH>;
		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
	};
};