You need to download AM335X Technical Reference Manual document spruh73e.pdf, loot at section 9.3, table 9.10. The offset is 800.
Then you can execute the following command.
root@arm:~# cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pins |grep "884"
The output will be
pin 33 (44e10884.0) 00000032 pinctrl-single
root@arm:~# cat /sys/kernel/debug/pinctrl/44e10800.pinmux/pins |grep "884"
pin 33 (44e10884.0) 00000032 pinctrl-single
root@arm:~#
"884" in the table means "gpmc_csn2" and then compare to the pinmux tool. The configuration for "gpmc_csn2" is 0×32. 0x32 means input/pullup/mode2 (mmc1_cmd).
To know what this setting means, we can look to the Technical Reference Manual again.
Section 9.3.50 describes what this value means. Table 9-60 shows us each bit:
| Bit | 1 | 0 | |
| 5 | Receive Enable | Receive disable | |
| 4 | Pullup | Pulldown | |
| 3 | Pullup/down Disabled | Pullup/down Enabled | |
| 2,1,0 | Mode |
