diff options
| author | Dave Stevenson <dave.stevenson@raspberrypi.org> | 2018-02-20 14:19:33 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2018-02-22 13:49:59 +0100 |
| commit | a98d90e7d588045716c3c85d63f93dc3f15a079b (patch) | |
| tree | fdcbbb4d27016e66dd110bae326d8ee1cff5ac95 /drivers/gpio/Kconfig | |
| parent | 9777d8099a4a9df1625b4caaee1388c0158478c5 (diff) | |
| download | linux-0-day-a98d90e7d588045716c3c85d63f93dc3f15a079b.tar.gz linux-0-day-a98d90e7d588045716c3c85d63f93dc3f15a079b.tar.xz | |
gpio: raspberrypi-exp: Driver for RPi3 GPIO expander via mailbox service
Pi3 and Compute Module 3 have a GPIO expander that the
VPU communicates with.
There is a mailbox service that now allows control of this
expander, so add a kernel driver that can make use of it.
Reviewed-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index 8dbb2280538d9..fd0562a37f680 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -122,6 +122,15 @@ config GPIO_ATH79 Select this option to enable GPIO driver for Atheros AR71XX/AR724X/AR913X SoC devices. +config GPIO_RASPBERRYPI_EXP + tristate "Raspberry Pi 3 GPIO Expander" + default RASPBERRYPI_FIRMWARE + depends on OF_GPIO + depends on (ARCH_BCM2835 && RASPBERRYPI_FIRMWARE) || COMPILE_TEST + help + Turn on GPIO support for the expander on Raspberry Pi 3 boards, using + the firmware mailbox to communicate with VideoCore on BCM283x chips. + config GPIO_BCM_KONA bool "Broadcom Kona GPIO" depends on OF_GPIO && (ARCH_BCM_MOBILE || COMPILE_TEST) |