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| author | Sergei Ianovich <ynvich@gmail.com> | 2016-02-23 13:44:28 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-02-24 13:09:08 +0900 |
| commit | 7ecbfff6711fb331591003ac32c002ce55a0758f (patch) | |
| tree | 12723faadcbc40a55e05c20ab90f7978b97d964a /drivers/spi/Kconfig | |
| parent | 92e963f50fc74041b5e9e744c330dca48e04f08d (diff) | |
| download | lwn-7ecbfff6711fb331591003ac32c002ce55a0758f.tar.gz lwn-7ecbfff6711fb331591003ac32c002ce55a0758f.zip | |
spi: master driver to enable RTC on ICPDAS LP-8841
ICP DAS LP-8841 contains a DS-1302 RTC. This driver provides an SPI
master which makes the RTC usable. The driver is not supposed to work
with anything else.
The driver uses the standard MicroWire half-duplex transfer timing.
Master output is set on low clock and sensed by the RTC on the rising
edge. Master input is set by the RTC on the trailing edge and is sensed
by the master on low clock.
Signed-off-by: Sergei Ianovich <ynvich@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/Kconfig')
| -rw-r--r-- | drivers/spi/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index 77064160dd76..1206a6651e70 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -271,6 +271,16 @@ config SPI_LM70_LLP which interfaces to an LM70 temperature sensor using a parallel port. +config SPI_LP8841_RTC + tristate "ICP DAS LP-8841 SPI Controller for RTC" + depends on MACH_PXA27X_DT || COMPILE_TEST + help + This driver provides an SPI master device to drive Maxim + DS-1302 real time clock. + + Say N here unless you plan to run the kernel on an ICP DAS + LP-8x4x industrial computer. + config SPI_MPC52xx tristate "Freescale MPC52xx SPI (non-PSC) controller support" depends on PPC_MPC52xx |