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	The device ignores any levels or transitions on the SCL pin when the device is idle, asleep or during waking up. Linux kernel driver for atsha204a (atmel-sha204a.ko) also ignores return value from i2c wakeup send command, see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/crypto/atmel-i2c.c?h=v5.19#n174 And also userspace Turris libatsha204 library ignores return value from wakeup send command, see: https://gitlab.nic.cz/turris/libatsha204/-/blob/v29.2/src/libatsha204/layer_ni2c.c#L75-76 U-Boot driver should do same thing. Fixes waking up ATSHA204 on Turris 1.x boards. Signed-off-by: Pali Rohár <pali@kernel.org> Reviewed-by: Stefan Roese <sr@denx.de> Tested-by: Paweł Anikiel <pan@semihalf.com> Reviewed-by: Marek Behún <kabel@kernel.org>