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From c0aaf0d4213bfc9df85c397cd974f7a6f15255f2 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 1 Jul 2016 22:09:24 +0100
Subject: [PATCH] spi-bcm2835: Disable forced software CS
Select software CS in bcm2708_common.dtsi, and disable the automatic
conversion in the driver to allow hardware CS to be re-enabled with an
overlay.
See: https://github.com/raspberrypi/linux/issues/1547
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
drivers/spi/spi-bcm2835.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -707,6 +707,7 @@ static int bcm2835_spi_setup(struct spi_
return -EINVAL;
}
+#if 0
/* now translate native cs to GPIO */
/* first look for chip select pins in the devices pin groups */
for (pingroup_index = 0;
@@ -756,6 +757,7 @@ static int bcm2835_spi_setup(struct spi_
spi->chip_select, spi->cs_gpio, err);
return err;
}
+#endif
return 0;
}
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