linux-kernel - Re: [PATCH 08/13] net: ravb: Rely on PM domain to enable refclk

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Date:   Wed, 22 Nov 2023 20:31:14 +0300
From:   Sergey Shtylyov <s.shtylyov@....ru>
To:     Claudiu <claudiu.beznea@...on.dev>, <davem@...emloft.net>,
        <edumazet@...gle.com>, <kuba@...nel.org>, <pabeni@...hat.com>,
        <p.zabel@...gutronix.de>, <yoshihiro.shimoda.uh@...esas.com>,
        <geert+renesas@...der.be>, <wsa+renesas@...g-engineering.com>,
        <biju.das.jz@...renesas.com>,
        <prabhakar.mahadev-lad.rj@...renesas.com>,
        <sergei.shtylyov@...entembedded.com>,
        <mitsuhiro.kimura.kc@...esas.com>, <masaru.nagai.vx@...esas.com>
CC:     <netdev@...r.kernel.org>, <linux-renesas-soc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
Subject: Re: [PATCH 08/13] net: ravb: Rely on PM domain to enable refclk

On 11/20/23 11:46 AM, Claudiu wrote:

> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
> 
> For RZ/G3S and RZ/G2L SoCs the Ethernet's reference clock is part of the
> Ethernet's power domain. It is controlled though CPG driver that is
> providing the support for power domain that Ethernet belongs. Thus,
> to be able to implement runtime PM (at least for RZ/G3S at the moment)
> w/o the need to add clock enable/disable specific calls in runtime PM
> ops of ravb driver and interfere with other IP specific implementations,
> add a new variable to struct_hw_info and enable the reference clock
> based on the value of this variable (the variable states if reference
> clock is part of the Ethernet's power domain).
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

Reviewed-by: Sergey Shtylyov <s.shtylyov@....ru>

[...]

MBR, Sergey