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How to configure 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