From: Geert Uytterhoeven Date: Thu, 30 Jan 2014 08:43:50 +0000 (+0100) Subject: spi: rspi: Add support for Quad and Dual SPI Transfers on QSPI X-Git-Tag: v3.15-rc1~147^2~3^8~7 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=880c6d114fd79a6973708744c78c7f55da6aea4c;p=pandora-kernel.git spi: rspi: Add support for Quad and Dual SPI Transfers on QSPI Add support for Quad and Dual SPI Transfers on the Renesas Quad Serial Peripheral Interface, as found in R-Car Gen2 SoCs like R-Car H2 (r8a7790) and R-Car M2 (r8a7791): - Add unidirectional transfer methods for Quad/Dual SPI Transfers. - Program the sequencer to handle SPI messages with multiple transfer modes when Quad or Dual transfers are enabled for an SPI slave. Up to 4 transfer modes per SPI message are supported by the hardware. - Advertise the availability of Quad and Dual SPI modes on QSPI. Signed-off-by: Geert Uytterhoeven Signed-off-by: Mark Brown --- Reading git-diff-tree failed