The functions in this file calculate and store the value for each
register of the memory controller.
This code is based on the equivalent file in directory
arch/powerpc/cpu/mpc8xxx/ddr from U-Boot version git-a71d45d.
Signed-off-by: Renaud Barbier <renaud.barbier@ge.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>