Messages in this thread |  | | Date | Tue, 14 Dec 2021 13:23:55 +0100 | From | Francesco Dolcini <> | Subject | Re: [PATCH net-next 0/3] Add Possiblity to Reset PHY After Power-up |
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On Tue, Dec 14, 2021 at 01:16:35PM +0100, Philippe Schenker wrote: > We do have a hardware design in which the ethernet phy regulator and > reset are controlled by software. The ethernet PHY is a Microchip > KSZ9131 [1] and the power sequencing requires a reset after the power > goes up. > > In our case the ethernet PHY is connected to a Freescale FEC and the > driver is shutting down the regulator on suspend, however on the resume > path the reset signal is never asserted and because of that the > ethernet is not working anymore. > > To solve this adds a new phy_reset_after_power_on() function, similar > to the existing phy_reset_after_clk_enable(), and call it in the fec > resume path after the regulator is switched on as suggested by > Joakim Zhang <qiangqing.zhang@nxp.com>. > > [1] https://ww1.microchip.com/downloads/en/DeviceDoc/00002841C.pdf
For the whole series.
Reviewed-by: Francesco Dolcini <francesco.dolcini@toradex.com>
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