From: Francesco Dolcini <francesco.dolcini@toradex.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: Francesco Dolcini <francesco.dolcini@toradex.com>,
"Russell King (Oracle)" <linux@armlinux.org.uk>,
Joakim Zhang <qiangqing.zhang@nxp.com>,
Philippe Schenker <philippe.schenker@toradex.com>,
netdev@vger.kernel.org, "David S . Miller" <davem@davemloft.net>,
Heiner Kallweit <hkallweit1@gmail.com>,
Jakub Kicinski <kuba@kernel.org>,
Fabio Estevam <festevam@gmail.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH net-next 3/3] net: fec: reset phy on resume after power-up
Date: Wed, 15 Dec 2021 20:48:55 +0100 [thread overview]
Message-ID: <20211215194855.GA114534@francesco-nb.int.toradex.com> (raw)
In-Reply-To: <YbpDKH6CaHzm119W@lunn.ch>
On Wed, Dec 15, 2021 at 08:34:00PM +0100, Andrew Lunn wrote:
> > The reason is that the power consumption in reset is higher in reset
> > compared to the normal PHY software power down.
>
> Does the datasheet have numbers for in lower power mode and held in
> reset? We only have an issue if held in reset when in low power mode
> consumes more power than simply in low power mode.
The numbers for KSZ9131, Table 6-3: Power Consumption from datasheet [0]
61.2mW in reset, 24.4mW in software power down (3.3VDD)
40.9mW in reset, 12.5mW in software power down (2.5VDD)
Francesco
[0] https://ww1.microchip.com/downloads/en/DeviceDoc/00002841B.pdf
next prev parent reply other threads:[~2021-12-15 19:49 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-14 12:16 [PATCH net-next 0/3] Add Possiblity to Reset PHY After Power-up Philippe Schenker
2021-12-14 12:16 ` [PATCH net-next 1/3] net: phy: add phy_reset_after_power_on() function Philippe Schenker
2021-12-14 12:16 ` [PATCH net-next 2/3] net: phy: micrel: add reset-after-power-on flag to ksz9x31 phys Philippe Schenker
2021-12-14 12:16 ` [PATCH net-next 3/3] net: fec: reset phy on resume after power-up Philippe Schenker
2021-12-14 18:54 ` Andrew Lunn
2021-12-14 19:09 ` Russell King (Oracle)
2021-12-14 22:35 ` Francesco Dolcini
2021-12-15 9:36 ` Andrew Lunn
2021-12-15 10:29 ` Russell King (Oracle)
2021-12-15 11:01 ` Francesco Dolcini
2021-12-15 11:10 ` Francesco Dolcini
2021-12-15 19:34 ` Andrew Lunn
2021-12-15 19:48 ` Francesco Dolcini [this message]
2021-12-16 4:52 ` Joakim Zhang
2021-12-16 7:52 ` Francesco Dolcini
2021-12-16 10:24 ` Andrew Lunn
2021-12-16 11:24 ` Francesco Dolcini
2021-12-16 11:28 ` Andrew Lunn
2021-12-16 11:31 ` Francesco Dolcini
2021-12-16 11:32 ` Andrew Lunn
2021-12-15 10:25 ` Joakim Zhang
2021-12-14 12:23 ` [PATCH net-next 0/3] Add Possiblity to Reset PHY After Power-up Francesco Dolcini
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