Commits
Keiji Hayashibara committed 5ba155a4d4c
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>