Standby in imx6

[mathew_k_t]

Hi,

I'm working on low power management in imx6ull evk. I found a dedicated pin CCM_PMIC_STBY_REQ and GPIO_DVFS.

And I'm getting following results in power state = standby,

PMIC_STBY_REQ = 0, GPIO_DVFS = 0, output is 1.4V (1.375V + 25mV)
PMIC_STBY_REQ = 0, GPIO_DVFS = 1, output is 1.3V (1.275V + 25mV)

1. But I have a doubt in below condition

      PMIC_STBY_REQ = 1, GPIO_DVFS = 0, output is 0.925V (0.9V + 25mV)

      How to get the above condition, I'm unable to find any configuration for CCM_PMIC_STBY_REQ in dts or pm_imx6.c.

   2. Whether this condition is achieved in any other power state.

awaiting your response.

Regards,

[igorpadykov · Accepted solution]

Hi mathew_k

one can look at low power mode cases description in AN5345

i.MX6ULL Power Consumption Application Note

sect.4.1.1. Use case 1: Deep-Sleep mode (DSM), sect.6.1. Deep-Sleep mode

https://www.nxp.com/docs/en/application-note/AN5345.pdf 

Best regards
igor
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