tree bb3457d37b0227f74221dcd443666cf85d03ce93
parent a1fe39636e6fb60c8fe7e3b87a32cb561585399f
author Lucas Stach <l.stach@pengutronix.de> 1520515517 +0100
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1606035624 +0100

i2c: imx: use clk notifier for rate changes

commit 90ad2cbe88c22d0215225ab9594eeead0eb24fde upstream

Instead of repeatedly calling clk_get_rate for each transfer, register
a clock notifier to update the cached divider value each time the clock
rate actually changes.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Sudip Mukherjee <sudipm.mukherjee@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>