On 9/3/2012 6:00 PM, Andy Shevchenko wrote:
On Mon, Sep 3, 2012 at 2:50 PM, Subhash Jadavani
<subhashj@xxxxxxxxxxxxxx> wrote:
As such this is ok if you want this behaviour. But i see other issue which
is not related to your patch.
Let's say if the host supports 400KHz, 25 MHz, 50MHz, 100MHz and currently
card is operating in HS (High Speed) mode@50MHz. and now if someone tries to
change the frequency to 100MHz, then we should just don't let the clock
change to 100MHz before we put the card in appropriate bus speed mode (in SD
cards case, it would be SDR50 and eMMC case it would be HS200). Although
this is anyway not an issue created by your patch but this is just to let
you know that frequency can't be changed indepently without informing the
card beforehand.
That's why the file is located under debugfs. There is an assumption
that developer understands
what he or she is doing by changing this parameter.
Agreed. Thanks.
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