Ludwig Zenz aa34505653 ARM: imx6: DHCOM i.MX6 PDK: use Kconfig for inclusion of DDR calibration ... The four x16 DDR3 are wired in T-topology. From NXP AN4467: 'Although not required, T-Topologies may also benefit from performing Write Leveling as there are package delays on both the processor and DDR devices that can be de-skewed by performing Write Leveling. Therefore, Freescale recommends determining Write Leveling calibration parameters for all boards, regardless of topology used.' That is why write level calibration is also done. Signed-off-by: Ludwig Zenz <lzenz@dh-electronics.com>		2019-04-25 19:16:24 +02:00
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dh_imx6	ARM: imx6: DHCOM i.MX6 PDK: use Kconfig for inclusion of DDR calibration	2019-04-25 19:16:24 +02:00