[U-Boot] [PATCH v4] drivers/net/phy: add fixed-phy / fixed-link support

[Joe Hershberger]

On Tue, Mar 21, 2017 at 3:19 PM, Hannes Schmelzer <oe5hpm at oevsv.at> wrote:
> From: Hannes Schmelzer <hannes.schmelzer at br-automation.com>
>
> This patch adds support for having a "fixed-link" to some other MAC
> (like some embedded switch-device).
>
> For this purpose we introduce a new phy-driver, called "Fixed PHY".
>
> Fixed PHY works only with CONFIG_DM_ETH enabled, since the fixed-link is
> described with a subnode below ethernet interface.
>
> Most ethernet drivers (unfortunately not all are following same scheme
> for searching/attaching phys) are calling "phy_connect(...)" for getting
> a phy-device.
> At this point we link in, we search here for a subnode called "fixed-
> link", once found we start phy_device_create(...) with the special phy-
> id PHY_FIXED_ID (0xa5a55a5a).
>
> During init the "Fixed PHY" driver has registered with this id and now
> gets probed, during probe we get all the details about fixed-link out of
> dts, later on the phy reports this values.
>
> Signed-off-by: Hannes Schmelzer <hannes.schmelzer at br-automation.com>
>
> Signed-off-by: Hannes Schmelzer <oe5hpm at oevsv.at>

Acked-by: Joe Hershberger <joe.hershberger at ni.com>