Could anybody answer my following question about GPIO of AM335x?

Lin,
what is the original post you are talking about the problems?

Here is my original question:

(How to set the gpmc_ad14 (V13) pin of AM3358 to GPIO output low)

Hello there,

I want to set that pin low to turn on an onboard led during the SPL stage. Could you tell me how I can do it?

Someone told me to modify the mux.c file.

I modified it as below:

static struct module_pin_mux nand_pin_led[ ] = {

       //{OFFSET(gpmc_ad14),  (MODE(0) | PULLUDDIS | RXACTIVE) },    /* original AD14 setting  */ 

         {OFFSET(gpmc_ad14),  (MODE(7) | PULLDOWN_EN) },                   /* my modified AD14 setting  */

         {-1},

};

Then in the function void enable_board_pin_mux(void) I added:

         configure_module_pin_mux(nand_pin_led); 

But, the led on board doesn't response at all.

Is there anything wrong in my above code? Or do I miss anything?

Appreciate all kinds of input.

Thanks,

Lin

Here is my original question:

How to set the GPMC_AD14 (V13) pin of AM3358 to GPIO output low?


Hello there,

I want to set that pin low to turn on an onboard led during the SPL stage. Could you tell me how I can do it?

Someone told me to modify the mux.c file.

I modified it as below:

static struct module_pin_mux nand_pin_led[ ] = {

//{OFFSET(gpmc_ad14), (MODE(0) | PULLUDDIS | RXACTIVE) }, /* original AD14 setting */

{OFFSET(gpmc_ad14), (MODE(7) | PULLDOWN_EN) }, /* my modified AD14 setting */

{-1},

};

Then in the function void enable_board_pin_mux(void) I added:

configure_module_pin_mux(nand_pin_led);

But, the led on board doesn't response at all.

Is there anything wrong in my above code? Or do I miss anything?

Appreciate all kinds of input.

Thanks,

Lin

thanks Biser for catching and closing it.