GPIO Debug - 4M

root@wirenboard:~# mount -t debugfs none /sys/kernel/debug/
root@wirenboard:~# cat /sys/kernel/debug/gpio
GPIOs 0-31, platform/80018000.pinctrl:gpio@0, 80018000.pinctrl:gpio@0:
 gpio-0   (80000000.apbh:ssp1gp) in  lo
 gpio-3   (spi32766.0          ) out hi
 gpio-4   (sysfs               ) in  lo IRQ
 gpio-5   (sysfs               ) in  lo IRQ
 gpio-6   (sysfs               ) in  hi IRQ
 gpio-7   (sysfs               ) in  hi IRQ
 gpio-16  (sysfs               ) out lo
 gpio-20  (sysfs               ) out lo
 gpio-21  (80000000.apbh:ssp1gp) out lo
 gpio-22  (sysfs               ) in  lo IRQ
 gpio-23  (sysfs               ) in  lo IRQ
 gpio-24  (sysfs               ) out lo
 gpio-25  (80000000.apbh:ssp1gp) out lo
 gpio-26  (sysfs               ) out lo
 gpio-27  (sysfs               ) in  hi IRQ
 gpio-28  (sysfs               ) in  hi IRQ

GPIOs 32-63, platform/80018000.pinctrl:gpio@1, 80018000.pinctrl:gpio@1:
 gpio-37  (lirc-rx             ) in  lo
 gpio-38  (sysfs               ) in  lo
 gpio-56  (usb0_vbus           ) out hi
 gpio-59  (usb1_vbus           ) out lo
 gpio-62  (sysfs               ) in  hi IRQ

GPIOs 64-95, platform/80018000.pinctrl:gpio@2, 80018000.pinctrl:gpio@2:
 gpio-76  (sysfs               ) in  lo IRQ
 gpio-77  (watchdog            ) out hi
 gpio-78  (sysfs               ) out hi
 gpio-79  (lirc-rx             ) in  hi
 gpio-83  (sysfs               ) in  hi IRQ
 gpio-85  (sysfs               ) in  lo IRQ
 gpio-91  (sysfs               ) in  lo IRQ

GPIOs 96-127, platform/80018000.pinctrl:gpio@3, 80018000.pinctrl:gpio@3:
 gpio-102 (sysfs               ) in  hi IRQ
 gpio-116 (w1                  ) in  hi
 gpio-118 (w1 strong pullup    ) out lo
 gpio-119 (?                   ) out lo
 gpio-122 (?                   ) out lo

GPIOs 128-159, platform/80018000.pinctrl:gpio@4, 80018000.pinctrl:gpio@4:
 gpio-141 (phy-reset           ) out hi

GPIOs 160-167, i2c/0-0027, mcp23008, can sleep:
 gpio-160 P3.0 (sysfs       ) in  lo
 gpio-161 P3.1 (sysfs       ) in  lo
 gpio-162 P3.2 (sysfs       ) in  lo
 gpio-163 P3.3 (sysfs       ) in  lo
 gpio-164 P3.4 (sysfs       ) in  lo
 gpio-165 P3.5 (sysfs       ) in  lo
 gpio-166 P3.6 (sysfs       ) in  lo
 gpio-167 P3.7 (sysfs       ) in  lo

GPIOs 168-175, i2c/0-0026, mcp23008, can sleep:
 gpio-168 P3.0 (sysfs       ) in  lo
 gpio-169 P3.1 (sysfs       ) in  lo
 gpio-170 P3.2 (sysfs       ) in  lo
 gpio-171 P3.3 (sysfs       ) in  lo
 gpio-172 P3.4 (sysfs       ) in  lo
 gpio-173 P3.5 (sysfs       ) in  lo
 gpio-174 P3.6 (sysfs       ) in  lo
 gpio-175 P3.7 (sysfs       ) in  lo

GPIOs 176-183, i2c/0-0022, mcp23008, can sleep:
 gpio-176 P1.0 (sysfs       ) out lo
 gpio-177 P1.1 (sysfs       ) out lo
 gpio-178 P1.2 (sysfs       ) out lo
 gpio-179 P1.3 (sysfs       ) out lo
 gpio-180 P1.4 (sysfs       ) out lo
 gpio-181 P1.5 (sysfs       ) out lo
 gpio-182 P1.6 (sysfs       ) out lo
 gpio-183 P1.7 (sysfs       ) out lo

GPIOs 184-191, i2c/0-0024, mcp23008, can sleep:
 gpio-184 P2.0 (sysfs       ) out lo
 gpio-185 P2.1 (sysfs       ) out lo
 gpio-186 P2.2 (sysfs       ) out lo
 gpio-187 P2.3 (sysfs       ) out lo
 gpio-188 P2.4 (sysfs       ) out lo
 gpio-189 P2.5 (sysfs       ) out lo
 gpio-190 P2.6 (sysfs       ) out lo
 gpio-191 P2.7 (sysfs       ) out lo