AM263P4-Q1: Setting SOP pins to 4S mode not working

Hi Carwyn,

Thank you for the query.

We are looking into this issue. Can you let us know which version of CCS, SysConfig and MCU_PLUS_SDK is being used?

Regards,
Rijohn

Hi Rijohn,

I'm using CCS v12.8.1.00005, SysConfig v1.21.2 and MCU_PLUS_SDK for AM263Px v10.0.0.35.

Thanks

Hi Kier,

The flash supports 4S flashing as we have used it previously with the AM2634 controller with SOP pins in 4S boot mode. 

Our custom board previously used the AM2634 but that has been upgraded to the pin compatible AM263P4, using the same flash.

Thanks

Hi Carwyn,

Carwyn Griffiths said:

Additionally, the bootloader is only loaded from flash when the SOP pins are in 1S mode, it does not work in 4S mode. This seems to suggest that the issue is in hardware, rather than software.

We have to make sure the boot pins are properly latched and read inside the device.  Can you read the value of the boot pins from the CPU.
You can confirm this by connecting to DAP and reading the value of MSS_TOPRCM_SOP_MODE_VALUE (0x53200024)


Best Regards,
Rijohn

Hi Rijohn,

I've checked the value in that memory location and when setting the SOP pins in 4S and 1S configurations I get the following results:

4S config.: Reg. value 0x00000000
1S config.: Reg. value 0x00000002

Thanks,

Carwyn

Hi Carwyn,

Carwyn Griffiths said:

Hi Rijohn,

I've checked the value in that memory location and when setting the SOP pins in 4S and 1S configurations I get the following results:

4S config.: Reg. value 0x00000000

Since the bootmode is latched correctly we don't suspect an issue in board at this moment.


One of our customers have used this MX25L3233F QSPI Flash  and they were able to boot in 1s-1s-4s mode . So this confirms that there is no hardware limitations from Si perspective.

Can you please help me with the below information:

1. Can you please share the memory map register dump ( OSPI controller registers 0x538080xx ) and your SysConfig file.
2. At what point do you witness the failure?
   
   

Regards,
Rijohn

Hi Rijohn,

I've attached a memory dump for the OSPI registers and the syscfg file. 

The failure happens at startup. In 1S mode the SBL is loaded from flash and I can see the change in current drawn by the board supply, in 4S mode it behaves the same as when the flash has been erased and there is no change in current draw. I can also load the application from flash with the SBL when the SOP pins are in 1S mode but not in 4S mode.

Thanks,

Carwyn

ospi_memory_and_syscfg.zip