diff options
| author | Chris Packham <chris.packham@alliedtelesis.co.nz> | 2020-02-04 16:28:38 +1300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2020-02-12 23:56:18 +0000 |
| commit | e9e40543ad5b38b848879768359fd13650529961 (patch) | |
| tree | d1bc9e6a705a2fce8d45ab439ceaf7b9e792a4f5 /drivers/spi/Kconfig | |
| parent | d548ed71cb8862c96a1a8d17861bb5dabd1e2299 (diff) | |
spi: Add generic SPI multiplexer
Add a SPI device driver that sits in-band and provides a SPI controller
which supports chip selects via a mux-control. This enables extra SPI
devices to be connected with limited native chip selects.
Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200204032838.20739-3-chris.packham@alliedtelesis.co.nz
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/Kconfig')
| -rw-r--r-- | drivers/spi/Kconfig | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 0434614d8201..887fefe87fd5 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -897,6 +897,17 @@ config SPI_ZYNQMP_GQSPI # Add new SPI master controllers in alphabetical order above this line # +comment "SPI Multiplexer support" + +config SPI_MUX + tristate "SPI multiplexer support" + select MULTIPLEXER + help + This adds support for SPI multiplexers. Each SPI mux will be + accessible as a SPI controller, the devices behind the mux will appear + to be chip selects on this controller. It is still necessary to + select one or more specific mux-controller drivers. + # # There are lots of SPI device types, with sensors and memory # being probably the most widely used ones. |