Kerry Hsu

Power control for SD/MMC host on i.MX53 QSB

Discussion created by Kerry Hsu on Nov 10, 2011

Hi all,


I am implementing a small program to access eSDHC3 on i.MX53 QSB.


I need to power off the eSDHC3 host and then power on to restart the SD/MMC controller, but I don't find the mechanismto to do that.

There is not register to control the power of eSDHC3 host directly, so I check the power source from eSDHC3. The power source for the eSDHC3 is DCDC_3V2 described in IMX53QSBRM.pdf, but It seems not mentioned how to control it.


Please help me or suggest how to solve the issue. Thanks a lot.


Best Regards,