On Fri, Sep 13, 2024 at 10:40:21AM +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. Does this provide the boot-time default that userspace is subsequently allowed to change through ethtool, or does it provide a fixed configuration? -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
