After reset the oc protection polarity is set to active high on imx6. If the polarity is not specified in device tree it is not changed. The imx6dl-yapp4 platform uses an active-low oc signal so explicitly configure that in the device tree. Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>