spi: synquacer: Add HSSPI SPI controller driver for SynQuacer
This is a driver for the HSSPI SPI controller on SynQuacer SoC. The HSSPI has command sequence mode (memory mapped) and direct mode (FIFO access). The driver will operate it under the direct mode. And before booting OS, it switch back to the command sequence mode since that is compatible with default EDK2 behavior. Signed-off-by: NJassi Brar <jaswinder.singh@linaro.org> Signed-off-by: NMasami Hiramatsu <masami.hiramatsu@linaro.org>
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drivers/spi/spi-synquacer.c
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