[U-Boot] [PATCH] board: ge: bx50v3: Disable unused pins

[Akshay Bhat]

From: Justin Waters <justin.waters at timesys.com>

Certain pins are not used on the i.MX6, and should have a neutral
pad configuration in order to reduce electrical interference on
the board. This commit defines these pins with a default value
rather than relying on the system defaults.

Signed-off-by: Justin Waters <justin.waters at timesys.com>
Signed-off-by: Akshay Bhat <akshay.bhat at timesys.com>
Cc: Stefano Babic <sbabic at denx.de>
---
 board/ge/bx50v3/bx50v3.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c
index 822fc35..ff8f4d7 100644
--- a/board/ge/bx50v3/bx50v3.c
+++ b/board/ge/bx50v3/bx50v3.c
@@ -28,6 +28,10 @@
 #include <pwm.h>
 DECLARE_GLOBAL_DATA_PTR;
 
+#define NC_PAD_CTRL (PAD_CTL_PUS_100K_UP |	\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |	\
+	PAD_CTL_HYS)
+
 #define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
 	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
 	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
@@ -532,6 +536,12 @@ int board_eth_init(bd_t *bis)
 
 static iomux_v3_cfg_t const misc_pads[] = {
 	MX6_PAD_KEY_ROW2__GPIO4_IO11	| MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_EIM_A25__GPIO5_IO02	| MUX_PAD_CTRL(NC_PAD_CTRL),
+	MX6_PAD_EIM_CS0__GPIO2_IO23	| MUX_PAD_CTRL(NC_PAD_CTRL),
+	MX6_PAD_EIM_CS1__GPIO2_IO24	| MUX_PAD_CTRL(NC_PAD_CTRL),
+	MX6_PAD_EIM_OE__GPIO2_IO25	| MUX_PAD_CTRL(NC_PAD_CTRL),
+	MX6_PAD_EIM_BCLK__GPIO6_IO31	| MUX_PAD_CTRL(NC_PAD_CTRL),
+	MX6_PAD_GPIO_1__GPIO1_IO01	| MUX_PAD_CTRL(NC_PAD_CTRL),
 };
 #define SUS_S3_OUT	IMX_GPIO_NR(4, 11)
 #define WIFI_EN	IMX_GPIO_NR(6, 14)
-- 
2.8.1