Altera's U-Boot tree has following commit
FogBugz #159721: Enhance Arria V MPU clock to 1050MHz
It writes to the two undocumented registers
CLKMGR_ALTERAGRP_MPUCLK
and
CLKMGR_ALTERAGRP_MAINCLK
to setup the SoC for higher clocks.
Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>