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| author | Keiji Hayashibara <hayashibara.keiji@socionext.com> | 2018-08-01 09:29:12 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-08-01 12:22:37 +0200 |
| commit | 5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177 (patch) | |
| tree | 2305f0f12b7291379855241df751a2f463b0194b /drivers/spi/Kconfig | |
| parent | spi: add DT bindings for UniPhier SPI controller (diff) | |
| download | linux-5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177.tar.xz linux-5ba155a4d4cc8e4cdd3db6df7d03271a3bd91177.zip | |
spi: add SPI controller driver for UniPhier SoC
Add SPI controller driver implemented in Socionext UniPhier SoCs.
UniPhier SoCs have two types SPI controllers; SCSSI supports a
single channel, and MCSSI supports multiple channels.
This driver supports SCSSI only.
This controller has 32bit TX/RX FIFO with depth of eight entry,
and supports the SPI master mode only.
This commit is implemented in PIO transfer mode, not DMA transfer.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Signed-off-by: Keiji Hayashibara <hayashibara.keiji@socionext.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/Kconfig')
| -rw-r--r-- | drivers/spi/Kconfig | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index ad5d68e1dab7..671d078349cc 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -688,6 +688,19 @@ config SPI_TXX9 help SPI driver for Toshiba TXx9 MIPS SoCs +config SPI_UNIPHIER + tristate "Socionext UniPhier SPI Controller" + depends on (ARCH_UNIPHIER || COMPILE_TEST) && OF + help + This enables a driver for the Socionext UniPhier SoC SCSSI SPI controller. + + UniPhier SoCs have SCSSI and MCSSI SPI controllers. + Every UniPhier SoC has SCSSI which supports single channel. + Older UniPhier Pro4/Pro5 also has MCSSI which support multiple channels. + This driver supports SCSSI only. + + If your SoC supports SCSSI, say Y here. + config SPI_XCOMM tristate "Analog Devices AD-FMCOMMS1-EBZ SPI-I2C-bridge driver" depends on I2C |