linux-kernel - Re: [PATCH net-next v4 13/15] net: ravb: Set config mode in ndo_open and reset mode in ndo

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Message-ID: <fc7a8b50-76a8-f75e-c350-f98276d85a10@omp.ru>
Date: Sun, 28 Jan 2024 23:12:43 +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>,
	<richardcochran@...il.com>, <p.zabel@...gutronix.de>,
	<geert+renesas@...der.be>
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 net-next v4 13/15] net: ravb: Set config mode in ndo_open
 and reset mode in ndo_close

On 1/23/24 3:58 PM, Claudiu wrote:

> From: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>
> 
> As some IP variants switch to reset mode (and thus registers content is

   The register contents?

> lost) when setting clocks (due to module standby functionality) to be able
> to implement runtime PM and save more power, set the IP's operating mode to
> reset at the end of the probe. Along with it, in the ndo_open API the IP
> will be switched to configuration, then operation mode. In the ndo_close
> API, the IP will be switched back to reset mode. This allows implementing
> runtime PM and, along with it, save more power when the IP is not used.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@...renesas.com>

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

[...]

MBR, Sergey