On Fri, 13 Sep 2024 10:40:21 +0200, Oleksij Rempel wrote: > This patch introduces a new `timing-role` property in the device tree > bindings for configuring the master/slave role of PHYs. This is > essential for scenarios where hardware strap pins are unavailable or > incorrectly configured. > > The `timing-role` property supports the following values: > - `force-master`: Forces the PHY to operate as a master (clock source). > - `force-slave`: Forces the PHY to operate as a slave (clock receiver). > - `prefer-master`: Prefers the PHY to be master but allows negotiation. > - `prefer-slave`: Prefers the PHY to be slave but allows negotiation. > > The terms "master" and "slave" are retained in this context to align > with the IEEE 802.3 standards, where they are used to describe the roles > of PHY devices in managing clock signals for data transmission. In > particular, the terms are used in specifications for 1000Base-T and > MultiGBASE-T PHYs, among others. Although there is an effort to adopt > more inclusive terminology, replacing these terms could create > discrepancies between the Linux kernel and the established standards, > documentation, and existing hardware interfaces. > > Signed-off-by: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> > --- > changes v3: > - rename "master-slave" to "timing-role" > changes v2: > - use string property instead of multiple flags > --- > .../devicetree/bindings/net/ethernet-phy.yaml | 21 +++++++++++++++++++ > 1 file changed, 21 insertions(+) > Reviewed-by: Rob Herring (Arm) <robh@xxxxxxxxxx>
