From ca5ffeeb576e6392ed1331f01fb2ac5be4524d24 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>
---
 arch/arm/boot/dts/bcm2708_common.dtsi | 2 +-
 drivers/spi/spi-bcm2835.c             | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

--- a/arch/arm/boot/dts/bcm2708_common.dtsi
+++ b/arch/arm/boot/dts/bcm2708_common.dtsi
@@ -183,7 +183,7 @@
 			 * add more gpios if necessary as <&gpio 6 1>
 			 * (but do not forget to make them output!)
 			 */
-			cs-gpios = <0>, <0>;
+			cs-gpios = <&gpio 8 1>, <&gpio 7 1>;
 		};
 
 		i2c0: i2c@7e205000 {
--- a/drivers/spi/spi-bcm2835.c
+++ b/drivers/spi/spi-bcm2835.c
@@ -706,6 +706,7 @@ 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;
@@ -760,6 +761,7 @@ static int bcm2835_spi_setup(struct spi_
 	 * so we are setting it here explicitly
 	 */
 	gpio_set_value(spi->cs_gpio, (spi->mode & SPI_CS_HIGH) ? 0 : 1);
+#endif
 
 	return 0;
 }
