linux-kernel - Re: [PATCH net-next 0/2] net: phy: Add ability to debug RGMII connections

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Message-Id: <20191017.152442.339047834113245608.davem@davemloft.net>
Date:   Thu, 17 Oct 2019 15:24:42 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     f.fainelli@...il.com
Cc:     netdev@...r.kernel.org, andrew@...n.ch,
        linux-kernel@...r.kernel.org, hkallweit1@...il.com,
        bcm-kernel-feedback-list@...adcom.com, olteanv@...il.com,
        rmk+kernel@...linux.org.uk, cphealy@...il.com, joabreu@...opsys.com
Subject: Re: [PATCH net-next 0/2] net: phy: Add ability to debug RGMII
 connections

From: Florian Fainelli <f.fainelli@...il.com>
Date: Tue, 15 Oct 2019 15:49:51 -0700

> This patch series is primarily intended to reduce the amount of support
> involved with bringing up RGMII connections with the PHY library (or
> PHYLINK) for that matter. The idea consists in looping back a packet we
> just crafted and check whether it did came back correctly, if that is
> the case, we are good, else we must try configuring the PHY for
> different delays until it either works or we bail out.
> 
> As indicated in the commit message, future improvements could probably
> be done in order to converge faster on the appropriate configuration.
> This is intended to be PHY centric, and we are not playing with delays
> on the MAC side other than through the parsing of the phydev->interface.
> 
> The typical output would look like this:
> 
> [   62.668701] bcmgenet 8f00000.ethernet eth0: Trying "rgmii-txid" PHY interface
> [   62.676094] bcmgenet 8f00000.ethernet eth0: Determined "rgmii-txid" to be correct
> 
> Feedback highly welcome on this!

Looks like there was some feedback, please address.

Thank you.