I2c reg write in imx_atf code imx93_psci.c

[sbmd_1234]

Hi NXP Team,

How to access(read and write ) the i2c registers in the imx_atf code ./plat/imx/imx93/imx93_psci.c.


Thanks.

[JosephAtNXP]

Hi,

Thank you for your interest in NXP Semiconductor products,

You need to add the base address of the desired module that's within the peripheral bridge accessed (AIPS Peripheral Bridge 1).

E.g.

Regards

[sbmd_1234]

Hi 

I didn't get your point I want to use i2c registers for PMIC please tell me an example or something that will be good for me.

Thanks.

[JosephAtNXP]

Hi,

Take this example from 8ULP.

https://github.com/nxp-imx/imx-atf/blob/616a4588f333522d50a55bedd2b9a90a51474a75/plat/imx/imx8ulp/im...

https://github.com/nxp-imx/imx-atf/blob/616a4588f333522d50a55bedd2b9a90a51474a75/plat/imx/imx8ulp/im...

Define the data to run a transaction and copy it to I2C address.

Regards,

[sbmd_1234]

Hi 

One more query here why can't I use this command to put system in low drive mode.

echo 2 > /sys/devices/platform/imx93-lpm/mode