[PATCH 8/8] at91rm9200: fix spi cs support

[Jean-Christophe PLAGNIOL-VILLARD]

the rm9200 have a errata the cs0 must be used via hw cs not gpio

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
---
 arch/arm/mach-at91/at91rm9200_devices.c |    7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
index 8cb2f57..c9ceef9 100644
--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -182,7 +182,12 @@ void at91_add_device_spi(int spi_id, struct at91_spi_platform_data *pdata)
 		cs_pin = pdata->chipselect[i];
 
 		/* enable chip-select pin */
-		if (cs_pin > 0)
+		if (!gpio_is_valid(cs_pin))
+			continue;
+
+		if (cs_pin == AT91_PIN_PA3)
+			at91_set_A_periph(cs_pin, 0);
+		else
 			at91_set_gpio_output(cs_pin, 1);
 	}
 
-- 
1.7.10.4