LS1046A How to enable I2C4 automatically in RCW

[Darren_P]

Hi NXP,

As title. How can I enable I2C4 automatically in RCW?

I found "Extended RCW PinMux Control Register" in reference manual.

Address: 157_0000h base + 40Ch offset = 157_040Ch.

What's the command format set in RCW?

And if we didn't enable I2C4 function in boot stage. Does that mean I can't use I2C4 control when the system is in user space.

Thanks!!

[Pavel]

The LS1046a RCW does not have bits for I2C4 pins assignment.

Use the DEVDISR5 Register. See the Section 12.3.10 of the LS1046a Reference Manual.

Use the SCFG_RCWPMUXCR0 register. See the Section 11.3.41.

[Darren_P]

Hi Pavel,

Yes I understand those registers. My question is how can I enable those functions in RCW?

I noticed there's a pbi section which allows me to send some commands. 

Here's my command format. write 0x0157040C, 0x00000000. But it doesn't work.

Is my understanding for how to enable I2C4 wrong?

Darren

[Pavel · Accepted solution]

Add .pbl writing to RCW. Attached file contains RCW example for I2C4 pins enabling.

Path for this file in LSDK 2108 is the following:

flexbuild_lsdk2108/components/firmware/rcw/ls1046ardb/RR_FFSSPPPH_1133_5559

See information about files using for building in the following file:

flexbuild_lsdk2108/configs/board/ls1046ardb/manifest

Use the following command sequence for RCW, ATF and .img building:

flex-builder -c rcw -m ls1046ardb -b sd

flex-builder -c atf -m ls1046ardb -b sd

flex-builder -i mkfw -m ls1046ardb -b sd