AM3352: alternative ptp part

Hello Holger

Thank you for the query.

With regards to the hardware, there may not be any requirement to change.

Regarding the software changes, the frequency my need to be configured to the required value.

I am checking on this and will update you.

Regards,

Sreenivasa

(+) AM3352: Configure CPU frequency to Turbo Mode 800 MHZ - Processors forum - Processors - TI E2E support forums

Hello Holger

As i check internally, please review the attached thread and let me know if this helps.

Regards,

Sreenivasa

Hello Holger, 

Please refer below input from the expert

On AM335x, U-Boot/Linux can automatically detect the part and configure the CPU clock accordingly, so no software change when switching parts.

Regards,

Sreenivasa

Hello Sreenivasa,
just for understanding. Customer want to buy AM3352BZCZA80 or AM3352BZCZA100 but run it with 600MHz. If they run them with 800MHz or 1000MHz the current is higher and this means a HW change. So you say that the U-boot/Linux automatic set the 600MHz on the AM3352BZCZA80 or AM3352BZCZA100 device?

Regards, Holger

Hi Holger,

I am not sure how U-Boot handles the device detection, but AM335x Linux can detect the device OPP capability and adjust accordingly at Linux runtime depending on the cpufreq configurations in Linux. If the customer wants to set the max clock to 600MHz, they can remove the unwanted OPP settings in device tree. I suspect you can do the same in U-Boot device tree to ensure AM335x won't run faster than 600MHz.

Hello Holger,
just for understanding. Customer want to buy AM3352BZCZA80 or AM3352BZCZA100 but run it with 600MHz. If they run them with 800MHz or 1000MHz the current is higher and this means a HW change.

Your understanding is correct.

Regards,

Sreenivasa