GPIO Pin Assignment

To configure GPIO in the DTS an entry such as the following can be used, which consists of the GPIO bank, the GPIO Number, and the GPIO Options. More information on the possible GPIO options can be found here.

gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;

  • For ATM2/ATM3 gpio1 with GPIO number 5 would map to P25.

  • For ATM33/ATM34 gpio1 with GPIO number 5 would map to P21.

Below are tables containing mappings of the GPIO banks and their GPIO number to the physical pin number:

Note

Not all packages will have all of the GPIOs available to them. Please check the Pinmux Tool to see the available GPIO for a given package.

ATM2/ATM3:

GPIO Bank

GPIO Number

Pin Number

gpio0

0-13

14-15

P0-P13

P18-P19

gpio1

0-13

P20-P33

ATM33:

GPIO Bank

GPIO Number

Pin Number

gpio0

0-15

P0-P15

gpio1

0-14

P16-P30

ATM34:

GPIO Bank

GPIO Number

Pin Number

gpio0

0-15

P0-P15

gpio1

0-14

P16-P30

gpio2

3-15

P35-P47

gpio3

0-3

P48-P51