linux-kernel - Re: [PATCH] net: mdio: mdio-bcm-unimac: Delay before first poll

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Message-ID: <5ced5a7e-61f6-4132-bc21-c6034830221e@gmail.com>
Date:   Tue, 12 Dec 2023 16:08:05 -0800
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Justin Chen <justin.chen@...adcom.com>, netdev@...r.kernel.org
Cc:     Doug Berger <opendmb@...il.com>,
        Florian Fainelli <florian.fainelli@...adcom.com>,
        Broadcom internal kernel review list 
        <bcm-kernel-feedback-list@...adcom.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net: mdio: mdio-bcm-unimac: Delay before first poll

On 12/12/23 16:02, Justin Chen wrote:
> With a clock interval of 400 nsec and a 64 bit transactions (32 bit
> preamble & 16 bit control & 16 bit data), it is reasonable to assume
> the mdio transaction will take 25.6 usec. Add a 30 usec delay before
> the first poll to reduce the chance of a 1000-2000 usec sleep.
> 
> Reduce the timeout from 1000ms to 100ms as it is unlikely for the bus
> to take this long.
> 
> Signed-off-by: Justin Chen <justin.chen@...adcom.com>

Acked-by: Florian Fainelli <florian.fainelli@...adcom.com>

Thanks!
-- 
Florian