a9059b9643
The differential signal of DQS need keep low level before gate training. It need enable RPULL and disable PHY side ODT to ensure it when do gate training. But it can not access the PHY registers to do it when perform DFS.So the workaroud as below: It is ensure that the PHY's read gate is landing somewhere in the incoming DQS's pulses before it starts searching for pre-amble window. It need get the rddqs_delay_ps to calculate the start point of gate training for DFS. Change-Id: I79eabcf4ec9a9c8f4539f68a51f22afba49c72fe Signed-off-by: Lin Huang <hl@rock-chips.com> |
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