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- From c0aaf0d4213bfc9df85c397cd974f7a6f15255f2 Mon Sep 17 00:00:00 2001
- From: Phil Elwell <[email protected]>
- 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 <[email protected]>
- ---
- drivers/spi/spi-bcm2835.c | 2 ++
- 1 file changed, 2 insertions(+)
- --- a/drivers/spi/spi-bcm2835.c
- +++ b/drivers/spi/spi-bcm2835.c
- @@ -705,6 +705,7 @@ 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;
- @@ -754,6 +755,7 @@ static int bcm2835_spi_setup(struct spi_
- spi->chip_select, spi->cs_gpio, err);
- return err;
- }
- +#endif
-
- return 0;
- }
|
