gistfile1.txt

   fragment@0 {
      target = <&am33xx_pinmux>;
      __overlay__ {
         bb_gpmc_pins: pinmux_bb_gpmc_pins {
            pinctrl-single,pins = <

               /* clock */
               0x08C 0x30  /* gpmc_clk, INPUT_PULLUP | MODE0 */
               
               /* address/data muxed bus */
               0x000 0x30  /* gpmc_ad0, INPUT_PULLUP | MODE0 */
               0x004 0x30  /* gpmc_ad1, INPUT_PULLUP | MODE0 */
               0x008 0x30  /* gpmc_ad2, INPUT_PULLUP | MODE0 */
               0x00c 0x30  /* gpmc_ad3, INPUT_PULLUP | MODE0 */
               0x010 0x30  /* gpmc_ad4, INPUT_PULLUP | MODE0 */
               0x014 0x30  /* gpmc_ad5, INPUT_PULLUP | MODE0 */
               0x018 0x30  /* gpmc_ad6, INPUT_PULLUP | MODE0 */
               0x01c 0x30  /* gpmc_ad7, INPUT_PULLUP | MODE0 */
               0x020 0x30  /* gpmc_ad8, INPUT_PULLUP | MODE0 */
               0x024 0x30  /* gpmc_ad9, INPUT_PULLUP | MODE0 */
               0x028 0x30  /* gpmc_ad10, INPUT_PULLUP | MODE0 */
               0x02c 0x30  /* gpmc_ad11, INPUT_PULLUP | MODE0 */
               0x030 0x30  /* gpmc_ad12, INPUT_PULLUP | MODE0 */
               0x034 0x30  /* gpmc_ad13, INPUT_PULLUP | MODE0 */
               0x038 0x30  /* gpmc_ad14, INPUT_PULLUP | MODE0 */
               0x03c 0x30  /* gpmc_ad15, INPUT_PULLUP | MODE0 */
               
               /* control */
               0x090 0x10  /* gpmc_advn_ale, OUTPUT_PULLUP | MODE0 */
               0x094 0x10  /* gpmc_oen_ren, OUTPUT_PULLUP | MODE0 */
               0x098 0x10  /* gpmc_wen, OUTPUT_PULLUP | MODE0 */
               0x09c 0x10  /* gpmc_be0n_cle, OUTPUT_PULLUP | MODE0 */
               
               /* chipselects */
               0x07C 0x10  /* gpmc_csn0, OUTPUT_PULLUP | MODE0 */
               0x080 0x10  /* gpmc_csn1, OUTPUT_PULLUP | MODE0 */
               0x084 0x10  /* gpmc_csn2, OUTPUT_PULLUP | MODE0 */
               
            >;
         }; 
      }; 
   };