board: ge: bx50v3: Disable unused pins

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@timesys.com>
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Cc: Stefano Babic <sbabic@denx.de>

diff --git a/board/ge/bx50v3/bx50v3.c b/board/ge/bx50v3/bx50v3.c
index 70c298d2d0cf33ab3bd4ff5470b4bf7917e04db4..3cf51055d1ec2680f870b206aaf9df882f9eaf7d 100644 (file)
--- a/board/ge/bx50v3/bx50v3.c
+++ b/board/ge/bx50v3/bx50v3.c
@@ -27,6 +27,10 @@
 #include <i2c.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)
@@ -467,6 +471,12 @@ 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)