diff options
| author | Tom Rini <[email protected]> | 2025-10-10 11:02:36 -0600 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2025-10-10 11:07:44 -0600 |
| commit | a073d3d37c90cc1b85d14de97224288d69731c8a (patch) | |
| tree | ec4e7e9a63de5eed03c50816b1f70d5f3e52c532 /include | |
| parent | a574f8a3e504bed1baaef00c6ba1ac395e43be43 (diff) | |
| parent | 4b10bcfdef9cb544ca80988fe36d307a622bcd21 (diff) | |
Merge patch series "am65-cpsw-nuss phy_interface_t fixup for fixed TX delay"
Matthias Schiffer <[email protected]> says:
Following a discussion on the LKML [1], there has been a clarification
of the correct use of the rgmii(/-rxid/-txid/-it) phy-modes [2] - namely,
that they don't describe the interface at the MAC or PHY boundary, but
whether the PCB traces add delays or not (where it is
implementation-defined whether the delays are added on the MAC or PHY
side in the latter case).
Accordingly, a fixup has been implemented in the am65-cpsw-nuss driver
to make it follow the clarified rules [3]; apply the same change to
U-Boot. Backwards compatibility is preserved: using an old DTB with
the wrong phy-mode only results in a warning message, but keeps the
Ethernet working. With a new DTB from Linux 6.17+ that sets the mode to
rgmii-id, these changes are necessary to avoid using an unsupported/
reserved configuration. See the commit message of patch 2/2 for some
additional detail.
[1] https://lore.kernel.org/lkml/[email protected]/
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c360eb0c3ccb95306704fd221442283ee82f1f58
[3] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ca13b249f291f4920466638d1adbfb3f9c8db6e9
Link: https://lore.kernel.org/r/[email protected]
Diffstat (limited to 'include')
| -rw-r--r-- | include/miiphy.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/include/miiphy.h b/include/miiphy.h index 00d0b9b6a43..96afe5f4030 100644 --- a/include/miiphy.h +++ b/include/miiphy.h @@ -193,6 +193,21 @@ struct phy_device *dm_mdio_phy_connect(struct udevice *mdiodev, int phyaddr, phy_interface_t interface); /** + * dm_eth_phy_connect_interface - Connect an Eth device to a PHY based on device + * tree with custom PHY interface + * + * Picks up the DT phy-handle and from ethernet device node and connects the + * ethernet device to the linked PHY, while allowing the caller to specify + * the phy-mode to use. + * + * @ethdev: ethernet device + * @interface: MAC-PHY protocol + * + * Return: pointer to phy_device, or 0 on error + */ +struct phy_device *dm_eth_phy_connect_interface(struct udevice *ethdev, + phy_interface_t interface); +/** * dm_eth_phy_connect - Connect an Eth device to a PHY based on device tree * * Picks up the DT phy-handle and phy-mode from ethernet device node and |