Please refer to app note AN4509 "i.MX 6Dual/6Quad Power Consumption Measurement"
http://cache.freescale.com/files/32bit/doc/app_note/AN4509.pdf
Also, i.MX6 Datasheets contain sections "Maximum Supply Currents" and "Low Power Mode Supply Currents".
http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQIEC.pdf
http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQCEC.pdf
http://cache.freescale.com/files/32bit/doc/data_sheet/IMX6DQAEC.pdf
Have a great day,
Yuri
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