On Fri, Mar 13, 2020 at 02:04:24PM +0200, Madalin Bucur wrote:
> The correct setting for the RGMII ports on LS1043ARDB is to
> enable delay on both Rx and Tx so the interface mode used must
> be PHY_INTERFACE_MODE_RGMII_ID.
>
> Since commit 1b3047b5208a80 ("net: phy: realtek: add support for
> configuring the RX delay on RTL8211F") the Realtek 8211F PHY driver
> has control over the RGMII RX delay and it is disabling it for
> RGMII_TXID. The LS1043ARDB uses two such PHYs in RGMII_ID mode but
> in the device tree the mode was described as "rgmii_txid".
> This issue was not apparent at the time as the PHY driver took the
> same action for RGMII_TXID and RGMII_ID back then but it became
> visible (RX no longer working) after the above patch.
>
> Changing the phy-connection-type to "rgmii-id" to address the issue.
>
> Fixes: bf02f2ffe59c ("arm64: dts: add LS1043A DPAA FMan support")
> Signed-off-by: Madalin Bucur <madalin.bucur@xxxxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
Andrew
