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Date:   Sat, 9 May 2020 17:09:59 -0700
From:   Florian Fainelli <>
To:     Michael Walle <>,,
Cc:     Andrew Lunn <>,
        Heiner Kallweit <>,
        Russell King <>,
        "David S . Miller" <>
Subject: Re: [PATCH net-next 3/4] net: phy: broadcom: add cable test support

On 5/9/2020 3:37 PM, Michael Walle wrote:
> Most modern broadcom PHYs support ECD (enhanced cable diagnostics). Add
> support for it in the bcm-phy-lib so they can easily be used in the PHY
> driver.
> There are two access methods for ECD: legacy by expansion registers and
> via the new RDB registers which are exclusive. Provide functions in two
> variants where the PHY driver can from. To keep things simple for now,
> we just switch the register access to expansion registers in the RDB
> variant for now. On the flipside, we have to keep a bus lock to prevent
> any other non-legacy access on the PHY.
> Signed-off-by: Michael Walle <>

Reviewed-by: Florian Fainelli <>

Thanks for dealing with the legacy expansion vs. RDB access method, this
looks really nice, now I just need to test it on a variety of devices :)

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