Re: [PATCH v2 1/1] spi: Add SPI driver for Mikrotik RB4xx series boards

2015-03-30 Thread Andy Shevchenko
On Mon, Mar 30, 2015 at 9:24 PM, Bert Vermeulen wrote: > This driver mediates access between the connected CPLD and other devices > on the bus. > > The m25p80-compatible boot flash and (some models) MMC use regular SPI, > bitbanged as required by the SoC. However the SPI-connected CPLD has > a "fa

[PATCH v2 1/1] spi: Add SPI driver for Mikrotik RB4xx series boards

2015-03-30 Thread Bert Vermeulen
This driver mediates access between the connected CPLD and other devices on the bus. The m25p80-compatible boot flash and (some models) MMC use regular SPI, bitbanged as required by the SoC. However the SPI-connected CPLD has a "fast write" mode, in which two bits are transferred by SPI clock cycl