Is it possible to change the output of SCU_GPIO0_01 from the A35 in Yocto Linux 6.6.y without changing either the SCU or the M40 firmware?
I am working with a hardware design that is already mature and has SCU_GPIO0_01 wired out to other logic circuits that I need to control.
Or, is it possible to change the pinmux function of that pin from Linux userspace? I have found that switching between the functions SCU_GPIO0_IO01 and M40_UART0_TX by changing device trees and rebooting gives the low and high outputs on that pin that I am seeking, so changing the pinmux from userspace would be another way that I could control that line if changing the drive directly is not an option.
