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TDA4VM: MMR POK register cannot be written ?

li quan
Intellectual 955 points

Part Number: TDA4VM

Hi expers,

I try to monitor voltage by pok, during the test, it was found that the MMR register could not be written

eg: try write CTRLMMR_WKUP_POK_VDDR_CORE_UV_CTRL (0x4301811C) POK_TRIM field to 0x50 as follow:

pr_info ("pok config start0 0x%x\n", CSL_REG32_RD (0x4301811C));

CSL_REG32_WR (0x4301811C, 0x80000050);

pr_info ("pok config start1 0x%x\n", CSL_REG32_RD (0x4301811C));

however the value of CTRLMMR_WKUP_POK_VDDR_CORE_UV_CTRL register is always 0x80000014, output as follow:

sdr-pok: pok config start0 0x80000014
sdr-pok: pok config start1 0x80000014

Using CSL POK example, I can not recvice any esm error interupt.

Regards,

Li quan