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由 Stefan Mavrodiev 提交于
This patch enables the reading of the polarity cell from a PWM phandle and calls pwm_set_invert(). Not all platforms have polarity cell, so skip if it's not pressent. Signed-off-by: NStefan Mavrodiev <stefan@olimex.com> Reviewed-by: NAnatolij Gustschin <agust@denx.de>
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