diff options
| author | Sascha Hauer <s.hauer@pengutronix.de> | 2022-11-07 15:45:24 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-11-08 11:05:44 +0100 |
| commit | 288f3e294bd47a6ef3c5872dc50585c39da3c1f5 (patch) | |
| tree | 9b404f5dea42793d4170bfc392aa75ca9a260503 /drivers/gpio/Kconfig | |
| parent | 2d11e1838be14b9f5ba409da0fd4b07a162cc03c (diff) | |
| download | barebox-288f3e294bd47a6ef3c5872dc50585c39da3c1f5.tar.gz barebox-288f3e294bd47a6ef3c5872dc50585c39da3c1f5.tar.xz | |
gpio: Add gpio latch driver
This driver implements a GPIO multiplexer based on latches connected to
other GPIOs. A set of data GPIOs is connected to the data input of
multiple latches. The clock input of each latch is driven by another
set of GPIOs. With two 8-bit latches 10 GPIOs can be multiplexed into
16 GPIOs. GPOs might be a better term as in fact the multiplexed pins
are output only.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Link: https://lore.barebox.org/20221107144524.489471-5-s.hauer@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/gpio/Kconfig')
| -rw-r--r-- | drivers/gpio/Kconfig | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig index ab75fe4ed9..dd2b56d256 100644 --- a/drivers/gpio/Kconfig +++ b/drivers/gpio/Kconfig @@ -205,6 +205,12 @@ config GPIO_ZYNQ help Say yes here to support Xilinx Zynq GPIO controller. +config GPIO_LATCH + tristate "GPIO latch driver" + help + Say yes here to enable a driver for GPIO multiplexers based on latches + connected to other GPIOs. + endmenu endif |