Messages in this thread | | | Date | Wed, 15 Dec 2021 20:48:55 +0100 | From | Francesco Dolcini <> | Subject | Re: [PATCH net-next 3/3] net: fec: reset phy on resume after power-up |
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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
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