Re: [PATCH 0/4] net: dsa: b53: Enable internal GPHY on BCM63268

On 2025-02-06 12:17, Andrew Lunn wrote:

On Thu, Feb 06, 2025 at 10:15:50AM -0800, Florian Fainelli wrote:

quoted

Hi Kyle,

On 2/5/25 20:30, Kyle Hendry wrote:

quoted

Some BCM63268 bootloaders do not enable the internal PHYs by default.
This patch series adds functionality for the switch driver to
configure the gigabit ethernet PHY.

Signed-off-by: Kyle Hendry <redacted>

So the register address you are manipulating logically belongs in the GPIO
block (GPIO_GPHY_CTRL) which has become quite a bit of a sundry here. I
don't have a strong objection about the approach picked up here but we will
need a Device Tree binding update describing the second (and optional)
register range.

Despite this being internal, is this actually a GPIO? Should it be
modelled as a GPIO line connected to a reset input on the PHY? It
would then nicely fit in the existing phylib handling of a PHY with a
GPIO reset line?

	Andrew

The main reason I took this approach is because a SF2 register has
similar bits and I wanted to be consistent with that driver. If it
makes more sense to treat these bits as GPIOs/clocks/resets then it
would make the implementation simpler.

Best Regards,
Kyle