Martin Sperl 1ea29b39f4 spi: bcm2835aux: add bcm2835 auxiliary spi device driver
The bcm2835 has 2 auxiliary spi bus masters spi1 and spi2.

This implements the driver to enable these devices.

The driver does not implement native chip-selects but uses
the aribtrary GPIO-chip-selects provided by the spi-chipselect.

Note that this driver relies on the fact that
the clock is implemented by the clk-bcm2835-aux driver,
which enables/disables the HW block when requesting/releasing
the clock.

Signed-off-by: Martin Sperl <kernel@martin.sperl.org>
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-10-07 11:42:57 +01:00
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