Any good reference for Runtime suspend and resume

[sandeep kumar]

Hi all,
I was trying to understand how runtime suspend and resume is implemented in
the mmc subsystem.

It would be very greatful if somebody can give good reference to understand
the call stack,
and sequence of runtime_suspend, claim_host, release_host operations
execution.

I was trying to findout good docs for mmc/SD subsystem docs but no help.

-- 
With regards,
Sandeep Kumar Anantapalli,
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