mfd: cros_ec: spi: Add a DT property to delay asserting the CS

Some ECs need a little time for waking up before they can accept
SPI data at a high speed. Add a "google,cros-ec-spi-pre-delay"
property to the DT binding to configure this.

If this property isn't set, then no delay will be added. However,
if set it will cause a delay equal to the value passed to it to
be inserted at the beginning of a transaction.

Signed-off-by: Alexandru M Stan <[email protected]>
Reviewed-by: Doug Anderson <[email protected]>
Signed-off-by: Chris Zhong <[email protected]>
Signed-off-by: Javier Martinez Canillas <[email protected]>
Tested-by: Heiko Stuebner <[email protected]>
Acked-by: Lee Jones <[email protected]>
Acked-by: Olof Johansson <[email protected]>
Signed-off-by: Lee Jones <[email protected]>

0 files changed, 0 insertions, 0 deletions