Compiler/DRA829V: PAD Configuration Register Mapping

Hi Muthu,

Which SDK are you using?

1) How Wakeup Gpio0_3 is mapped to Pad configuration register.
Answer: You need to check the schematics for the exact Ball number of gpio0_3 & then just
do a search here: https://www.ti.com/lit/ds/symlink/tda4vm.pdf?ts=1593521450358&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTDA4VM

The above is the data Manual. The first instance of search lands in the table which gives you the Ball number and name
which is what you need to check in board schematics to see on which Ball the gpio0_3 is brought out on the board.

Just for example: AF22 That maps to Mode7 for GPIO0_3 & that means you need to configure PADCONFIG3.

2) - How WKUP_CTRL_MMR_CFG0_PADCONFIG44 is mapped to Particular GPIO.?
If i search for PADCONFIG44 maps to GPIO0_43 in mode 7.

Every padconfig has lock registers. That need to be written with particular values to unlock.

There is a pinmux tool to aid you for all that.

https://dev.ti.com/sysconfig/?fromPinmux=true#/config/?args=--device%20J721E_DRA829_TDA4VM_AM752x%20--part%20Default%20--package%20ALF%20--theme%20light

This is the pinmux tool which you can use to configure the PADCONFIG registers for any module. For ex: GPIO.
You need to pick the exact module instance and most importantly for each pin pick the ball correctly(Refer schematics for the exact ball number).
Then the pinmux tool itself is intelligent enough to generate the dts node for you in Linux.

Best Regards,
Keerthy