linux/drivers/pinctrl/aspeed
Andrew Jeffery 8ccb6dc6e9 pinctrl: aspeed: g4: Fix mux configuration for GPIOs AA[4-7], AB[0-7]
Incorrect video output configuration bits were being tested on pins in
GPIO banks AA and AB for the ROM{8,16} mux functions. The ROM{8,16}
functions are the highest priority for the relevant pins and also the
default function, so we require the relevant video output configuration
be disabled to mux GPIO functionality. As the wrong bits were being
tested a GPIO export would succeed but leave the pin in an unresponsive
state (i.e. value updates were ignored).

This misbehaviour was discovered as part of extending the GPIO
controller's support to cover banks Y, Z, AA, AB and AC (AC in the case
of the g5 SoC).

Fixes: 6d329f14a7 ("pinctrl: aspeed-g4: Add mux configuration for all pins")
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-01-26 14:42:39 +01:00
..
Kconfig pinctrl: Add pinctrl-aspeed-g5 driver 2016-09-07 16:53:37 +02:00
Makefile pinctrl: Add pinctrl-aspeed-g5 driver 2016-09-07 16:53:37 +02:00
pinctrl-aspeed-g4.c pinctrl: aspeed: g4: Fix mux configuration for GPIOs AA[4-7], AB[0-7] 2017-01-26 14:42:39 +01:00
pinctrl-aspeed-g5.c pinctrl: aspeed-g5: Add mux configuration for all pins 2016-12-28 01:21:23 +01:00
pinctrl-aspeed.c pinctrl: aspeed: Fix kerneldoc return descriptions 2016-12-28 01:23:10 +01:00
pinctrl-aspeed.h pinctrl: aspeed-g5: Add mux configuration for all pins 2016-12-28 01:21:23 +01:00