Re: [PATCH 2/4] phy: s32g: Add serdes subsystem phy

On Thu, Jan 29, 2026 at 02:36:01PM +0100, Vincent Guittot wrote:

On Thu, 29 Jan 2026 at 14:23, Russell King (Oracle)
[off-list ref] wrote:

quoted

On Thu, Jan 29, 2026 at 02:01:13PM +0100, Vincent Guittot wrote:

quoted

yes, the usual pattern is :
- phy_set_mode_ext()
- then phy_power_on()
but I can add an additional check

Please read Documentation/driver-api/phy/phy.rst section "Order of API
calls" which suggests phy_set_mode_ext() after phy_power_on().

Fair enough.
That being said, all pcie drivers  that use phy_set_mode_ext(), call
it before phy_power_on()

It looks like many ethernet drivers do the same, so I think maybe the
generic PHY documentation is incorrect or misleading, or is expressing
a preference that almost no one follows. Something for the generic PHY
maintainers to look at and/or comment on.

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