Re: [PATCH v4 0/2] net: phy: realtek: Fix RGMII TX/RX-delays initial config of rtl8211(e|f)

From: David Miller
Date: Wed May 08 2019 - 19:33:07 EST

From: Serge Semin <fancer.lancer@xxxxxxxxx>
Date: Thu, 9 May 2019 00:51:13 +0300

> It has been discovered that RX/TX delays of rtl8211e ethernet PHY
> can be configured via a MDIO register hidden in the extension pages
> layout. Particularly the extension page 0xa4 provides a register 0x1c,
> which bits 1 and 2 control the described delays. They are used to
> implement the "rgmii-{id,rxid,txid}" phy-mode support in patch 1.
> The second patch makes sure the rtl8211f TX-delay is configured only
> if RGMII interface mode is specified including the rgmii-rxid one.
> In other cases (most importantly for NA mode) the delays are supposed
> to be preconfigured by some other software or hardware and should be
> left as is without any modification. The similar thing is also done
> for rtl8211e in the patch 1 of this series.
> Signed-off-by: Serge Semin <fancer.lancer@xxxxxxxxx>
> Changelog v3
> - Add this cover-letter.
> - Add Andrew' Reviewed-by tag to patch 1.
> - Accept RGMII_RXID interface mode for rtl8211f and clear the TX_DELAY
> bit in this case.
> - Initialize ret variable with 0 to prevent the "may be used uninitialized"
> warning in patch 1.
> Changelog v4
> - Rebase onto net-next

Series applied.