linux-kernel - Re: [PATCH v6 5/5] net: ti: icssg-prueth: am65x SR2.0 add 10M full duplex support

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Date:   Wed, 23 Aug 2023 12:26:21 -0700
From:   Jacob Keller <jacob.e.keller@...el.com>
To:     MD Danish Anwar <danishanwar@...com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Roger Quadros <rogerq@...nel.org>,
        Simon Horman <simon.horman@...igine.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        "Andrew Lunn" <andrew@...n.ch>,
        Richard Cochran <richardcochran@...il.com>,
        "Conor Dooley" <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Paolo Abeni" <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>
CC:     <nm@...com>, <srk@...com>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <netdev@...r.kernel.org>,
        <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v6 5/5] net: ti: icssg-prueth: am65x SR2.0 add 10M full
 duplex support



On 8/23/2023 4:32 AM, MD Danish Anwar wrote:
> From: Grygorii Strashko <grygorii.strashko@...com>
> 
> For AM65x SR2.0 it's required to enable IEP1 in raw 64bit mode which is
> used by PRU FW to monitor the link and apply w/a for 10M link issue.
> Note. No public errata available yet.
> 
> Without this w/a the PRU FW will stuck if link state changes under TX
> traffic pressure.
> 
> Hence, add support for 10M full duplex for AM65x SR2.0:
>  - add new IEP API to enable IEP, but without PTP support
>  - add pdata quirk_10m_link_issue to enable 10M link issue w/a.
> 
> Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
> Signed-off-by: Vignesh Raghavendra <vigneshr@...com>
> Reviewed-by: Roger Quadros <rogerq@...nel.org>
> Reviewed-by: Simon Horman <horms@...nel.org>
> Signed-off-by: MD Danish Anwar <danishanwar@...com>
> ---

I should really checkout the regmap stuff :D It looks neat.

Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>