J721EXSOMXEVM: Regarding Software Reset for Mcu domain of TDA4VM

Hello Pradeep,

This API will be useful to reset MAIN DOMAIN , whereas for MCU1_0 you need to go with Sciclient calls .

To reset the whole device then you can use Sciclient_pmDeviceReset(). This API will perform a soft reset for all domains.

You can use Sciclient_pmDomainReset API for resetting domains. 

• When used the parameter DOMGRP_00, it affects all domains and triggered a reset across the entire system.

Regards

Tarun Mukesh

Hello Pradeep,

"Mcu_PerformReset"  API does not reset MCU domain reset it only does MAIN domain reset. After Main Domain Reset then the cores will restart the application from reboot vectors location on Main Domain. It does not affect MCU Domain at all.

If you do MCU Domain reset using sciclient call then it will send reset across the domains and it will restart loading the other cores after a while. (Soft reset of Soc) 

Regards

Tarun Mukesh

Hello,

Yes . In TRM we have section for Reset sequence where it will explain the types of reset and sequence.

Regards

Tarun Mukesh

Hello Pradeep,

My advise is you need to use sciclient calls Sciclient_pmDeviceReset() to do system reset.

Since you insisted For MCU reset you can try replacing 

LLD_REG32_WR(&rstaddr->MCU_WARM_RST_CTRL, MCU_PERFORM_RESET_MASK);

instead of 

 LLD_REG32_WR(&rstaddr->MAIN_WARM_RST_CTRL, MCU_PERFORM_RESET_MASK);

in the Mcu_PerformSoftSysReset API and try.

Before that unlock the Ctrl MMR

/* write Partition 6 Lock Key 0 Register */
LLD_REG32_WR(CSL_WKUP_CTRL_MMR0_CFG0_BASE + 0x19008, 0x68EF3490);
/* write Partition 6 Lock Key 1 Register */
LLD_REG32_WR(CSL_WKUP_CTRL_MMR0_CFG0_BASE + 0x1900C, 0xD172BC5A);
/* Check for unlock */
regVal = LLD_REG32_RD(CSL_WKUP_CTRL_MMR0_CFG0_BASE + 0x19008);
while ((regVal & 0x1) != 0x1U)
{
regVal = LLD_REG32_RD(CSL_WKUP_CTRL_MMR0_CFG0_BASE + 0x19008);
}

Regards

Tarun Mukesh