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spi: bcm2835: Raise maximum number of slaves to 4 

The "RevPi Connect Flat" PLC offered by KUNBUS has 4 slaves attached
to the BCM2835 SPI master.  Raise the maximum number of slaves in the
driver accordingly.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Link: https://lore.kernel.org/r/01453fd062de2d49bd74a847e13a0781cbf8143d.1578572268.git.lukas@wunner.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Lukas Wunner 2020-01-09 13:23:41 +01:00 committed by Mark Brown
parent 8ae7d44239
commit 603e92ff10
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1 changed files with 1 additions and 1 deletions
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2
drivers/spi/spi-bcm2835.c
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@ -68,7 +68,7 @@
#define BCM2835_SPI_FIFO_SIZE 64
#define BCM2835_SPI_FIFO_SIZE_3_4 48
#define BCM2835_SPI_DMA_MIN_LENGTH 96
#define BCM2835_SPI_NUM_CS 3 /* raise as necessary */
#define BCM2835_SPI_NUM_CS 4 /* raise as necessary */
#define BCM2835_SPI_MODE_BITS (SPI_CPOL | SPI_CPHA | SPI_CS_HIGH \
| SPI_NO_CS | SPI_3WIRE)