PROCESSOR-SDK-J721S2: How to set GPIO/I2C/UART, etc. driver strength in U-BOOT

Hi Stefan,

Stefan Fuchs said:

is it possible to configure GPIO/I2C/UART/etc. driver strength

Can you elaborate a bit more? If you mean their respective pin mux configuration then that can de done in the U-Boot.
We need to be cognizant about the fact that U- Boot is a transient phase, then Linux/QNX will take over those modules and
they will be re-initialized.

Best Regards,
Keerthy

Hi Keerthy,

yes, the question is if and how we can modify driver strength in U-BOOT pin mux configuration. And what I have to do that the configuration is really becoming active.

It is clear that U-BOOT is transient phase. But we plan to do a few simple HW tests simply with the help of U-BOOT GPIO, I2C, MDIO,... functions w/o even booting int Linux. And for these measurements we want to set different driver strength than default values.

BR
Stefan

Hi Keerthy,

thanks! I implemented this successfully.