AM623: SK-AM62B-P1: SPI signal issue

Hello Neil chen,

Thank you for the query.

Please check if the below link hekps

(+) AM623: SPI signal fine-tuning - Processors forum - Processors - TI E2E support forums

Regards,

Sreenivasa

Hi 

I took a quick look and found that since the IC models are different, I did not find any place to adjust TCS in the SysConfig tool. And although referring to the E2E you provided, the other party's question is to increase the time. I am not sure what you mean by the opposite operation can reduce the time?

I also looked at TRM P.1150 part 12.2.3.4.3.7. As shown below

Please tell me whether the bit0 SINGLE of MCSPI_MODULCTRL (0x20100128) register is set to '0'. we can adjust the CS time from bit25, bit26 TCS0 of MCSPI_CH0CONF (0x2010012C) register?

B.R.

Hello Neil chen,

Thank you.

I am assigning to the expert to support.

Regards,

Sreenivasa

Hi
Thanks for your help, hope to know soon

Hi,

Can you help me out with the mode of MCSPI you have set?

You can find the different modes from the following response: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1414084/faq-sk-am64b-mcspi-integration-guide/5428405#5428405

Regards,

Vaibhav

Hi Vaibhav

Thank you for your help reply. But the SPI I selected in the AM623 in SysConfig does not have these mode options

How do I find these options? Or am I doing something wrong?

Regards

Hi Neil,

neil chen said:

How do I find these options? Or am I doing something wrong?

No, you are not doing it wrongly.

Can you let me know if you are working on Processor SDK Linux or MCU PLUS SDK?

Regards,

Vaibhav

Hi Vaibhav

Is this what you mean?

Do I need to use the example.syscfg file? If so, where can I find it?

Regards,

Hi,

I do see that you are on Linux SDK.

neil chen said:

How do I find these options? Or am I doing something wrong?

You are indeed not doing anything wrong.

I am assuming once you select the combinations from the attached screenshot:

Then you go ahead and take the devicetree.dtsi changes.

neil chen said:

I did not find any place to adjust TCS in the SysConfig tool

This will not be there/provided in the SysConfig tool which you are using.

This would mostly be taken care at the code/hw level.

Allow sometime for another expert to comment on the same.

Regards,

Vaibhav

Hi Vaibhav

Thanks for your help, hope to get an answer soon
We have been stuck on this issue for a long time.

Regards,

Hi Vaibhav

Thanks for your help, hope to get an answer soon
We have been stuck on this issue for a long time.

Regards,

Hi Vaibhav

Did you find anyone who can help answer this question?

Regards,

This got assigned to me but I'm on PTO this week. Will be picking up E2E support again next week. Thanks.

Hi Andreas
Please help us solve our problem

Regards,

Hi All

Can anyone help please?

B.R.

Hi Neil,

if you are using Linux, the best & proven way to get SPI to work is the to use the device tree overlay that is part of our TI Linux Kernel Tree, and apply it (or integrate it) with your board-specific device tree file. It will make sure pinmux etc. is set correctly.

For our Processor SDK Linux v11.x the appropriate device tree overlay can be found here: https://git.ti.com/cgit/ti-linux-kernel/ti-linux-kernel/tree/arch/arm64/boot/dts/ti/k3-am625-sk-mcspi-loopback.dtso?h=ti-linux-6.12.y

For testing iself, use the `spidev_test` utility part of the Linux Kernel tree.

Regards, Andreas