4.19-stable review patch. If anyone has any objections, please let me know.
------------------ From: Stefan Wahren <stefan.wah...@i2se.com> commit e25b6783c7b1bb79103d4617336879423f86b05e upstream. The commit b1b8f45b3130 ("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: b1b8f45b3130 ("ARM: dts: bcm2837: Add missing GPIOs of Expander") Cc: sta...@vger.kernel.org Reported-by: Matthias Lueschner <luesc...@gmail.com> Link: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=911443 Signed-off-by: Stefan Wahren <stefan.wah...@i2se.com> Reviewed-by: Eric Anholt <e...@anholt.net> Signed-off-by: Florian Fainelli <f.faine...@gmail.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts | 2 +- arch/arm/boot/dts/bcm2837-rpi-3-b.dts | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts +++ b/arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts @@ -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>; }; }; --- a/arch/arm/boot/dts/bcm2837-rpi-3-b.dts +++ b/arch/arm/boot/dts/bcm2837-rpi-3-b.dts @@ -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>; }; };