On Fri, Aug 02, 2013 at 04:15:28PM +0530, Padma Venkat wrote:

Sorry for giving some what wrong info here. I verified the schemata.
There is a switch on the board which can be used to select the input
clock of codec MCLK1. We can either select oscillator clock which is
16.9MHz which is on the board or XCLKOUT which is from PMU or
i2scdclk(codec slave mode). Right now we are using oscillator clock as
input clock to MCLK1.

I agree that going with whatever the board ships with as default seems
sensible.  Might be worth putting in a comment with the XCLKOUT option
saying how it maps into the control on the board.