Part Number: AM6442
Hello exparts,
Having updated the pinctrl configuration from SDK9 to SDK12, We noticed that a flag had been added to the PIN_INPUT settings to enable the Schmitt trigger.
Could you please explain the relevant commit message in the ti-linux-kernel repository to help us understand the reason for this addition?
- We understand that the following four points are the main reasons for this change. Is this correct? If there are any supporting documents, please let us know.
- The Schmitt trigger is enabled by default in the hardware power-on reset (PoR) settings.
- When the Schmitt trigger is disabled, strict requirements apply to the slew rate of the input signal.
- It has been confirmed that, even in the absence of noise, spurious interrupts can occur on the GPIO if these requirements are not met.
- Since there are no clear benefits to disabling the Schmitt trigger, it is enabled by default.
- Can we assume that the content of this commit message represents TI’s official position?
Regards,
Ito
