> > I already explain how this works once. Please read this thread again.... The
> > MAC can apply the delays, but it must mask the phy-mode it passes to the
> > PHY.
>
> Yes. I have read these mails.
>
> I understand what you mean.
> "rgmii": delay on PCB, not MAC or PHY.
> "rgmii-id": delay on MAC or PHY, not PCB.
>
> ftgmac100 driver gets phy driver handle from of_phy_get_and_connect(), it
> will pass the phy-mode to
> phy driver from the node of mac dts.
> Therefore, I use "rgmii-id" and the phy will enable tx/rx internal delay.
> If I use "rgmii-id" and configure the RGMII delay in ftgmac100 driver, I
> cannot pass the phy-mode to
> phy driver.
Quoting myself, yet again:
> > MAC can apply the delays, but it must mask the phy-mode it passes to the
> > PHY.
If you decide the MAC does the RX clock delay, it needs to mask that
from the phy-mode, otherwise the PHY will also do it. If you decide
the MAC does the TX clock delay, its needs to mask that from the
phy-mode.
Andrew
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