spi: add driver for ar934x spi controller

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This patch adds driver for SPI controller found in Qualcomm Atheros
AR934x/QCA95xx SoCs.
This controller is a superset of the already supported qca,ar7100-spi.
Besides the bit-bang mode in spi-ath79.c, this new controller added
a new "shift register" mode, allowing faster spi operations.

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Link: https://lore.kernel.org/r/20200210034152.49063-2-gch981213@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

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Chuanhong Guo 2020-02-10 11:41:51 +08:00 • committed by Mark Brown

parent 4a08d6c866

commit 047980c582

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7

drivers/spi/Kconfig

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1

drivers/spi/Makefile

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235

drivers/spi/spi-ar934x.c

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