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

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

[Akshay Bhat]

From: Justin Waters <justin.waters@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@timesys.com>
Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
Cc: Stefano Babic <sbabic@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

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

[Stefano Babic]

On 13/04/2016 23:03, Akshay Bhat wrote:
> From: Justin Waters <justin.waters@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@timesys.com>
> Signed-off-by: Akshay Bhat <akshay.bhat@timesys.com>
> Cc: Stefano Babic <sbabic@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)
> 

Applied to master, thanks !

Best regards,
Stefano Babic

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