[lkml]   [2021]   [Dec]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH net-next 0/3] Add Possiblity to Reset PHY After Power-up
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 <>.
> [1]

For the whole series.

Reviewed-by: Francesco Dolcini <>

 \ /
  Last update: 2021-12-14 13:25    [W:0.108 / U:2.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site