kernel/linux.git/drivers/net/phy/broadcom.c, branch v6.18.21

net: phy: bcm54811: Fix GMII/MII/MII-Lite selection

2025-10-14T00:36:20+00:00

The Broadcom bcm54811 is hardware-strapped to select among RGMII and GMII/MII/MII-Lite modes. However, the corresponding bit, RGMII Enable in Miscellaneous Control Register must be also set to select desired RGMII or MII(-lite)/GMII mode. Fixes: 3117a11fff5af9e7 ("net: phy: bcm54811: PHY initialization") Signed-off-by: Kamil Horák - 2N Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20251009130656.1308237-2-kamilh@axis.com Signed-off-by: Jakub Kicinski

net: phy: broadcom: Convert to PHY_ID_MATCH_MODEL macro

2025-09-14T19:48:17+00:00

Convert the pattern phy_id phy_id_mask to the generic PHY_ID_MATCH_MODEL macro to drop hardcoding magic mask. Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: Christian Marangi Link: https://patch.msgid.link/20250911130840.23569-3-ansuelsmth@gmail.com Signed-off-by: Jakub Kicinski

net: phy: broadcom: Convert to phy_id_compare_model()

2025-09-14T19:48:17+00:00

Convert driver to phy_id_compare_model() helper instead of the custom BRCM_PHY_MODEL macro. Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: Christian Marangi Link: https://patch.msgid.link/20250911130840.23569-2-ansuelsmth@gmail.com Signed-off-by: Jakub Kicinski

net: phy: bcm54811: PHY initialization

2025-07-10T02:32:31+00:00

Reset the bit 12 in PHY's LRE Control register upon initialization. According to the datasheet, this bit must be written to zero after every device reset. Signed-off-by: Kamil Horák - 2N Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20250708090140.61355-5-kamilh@axis.com Signed-off-by: Jakub Kicinski

net: phy: bcm5481x: MII-Lite activation

2025-07-10T02:32:31+00:00

Broadcom PHYs featuring the BroadR-Reach two-wire link mode are usually capable to operate in simplified MII mode, without TXER, RXER, CRS and COL signals as defined for the MII. The absence of COL signal makes half-duplex link modes impossible, however, the BroadR-Reach modes are all full-duplex only. Depending on the IC encapsulation, there exist MII-Lite-only PHYs such as bcm54811 in MLP. The PHY itself is hardware-strapped to select among multiple RGMII and MII-Lite modes, but the MII-Lite mode must be also activated by software. Add MII-Lite activation for bcm5481x PHYs. Signed-off-by: Kamil Horák - 2N Reviewed-by: Florian Fainelli Reviewed-by: Russell King (Oracle) Link: https://patch.msgid.link/20250708090140.61355-4-kamilh@axis.com Signed-off-by: Jakub Kicinski

net: phy: broadcom: Correct BCM5221 PHY model detection

2025-03-31T12:47:41+00:00

Correct detect condition is applied to the entire 5221 family of PHYs. Fixes: 3abbd0699b67 ("net: phy: broadcom: add support for BCM5221 phy") Signed-off-by: Jim Liu Reviewed-by: Michal Swiatkowski Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller

net: phy: broadcom: don't include '' directly

2025-02-12T00:36:48+00:00

The header clearly states that it does not want to be included directly, only via ''. Replace the include accordingly. Signed-off-by: Wolfram Sang Acked-by: Florian Fainelli Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/20250210113658.52019-2-wsa+renesas@sang-engineering.com Signed-off-by: Jakub Kicinski

net: phy: Constify struct mdio_device_id

2025-01-14T23:01:32+00:00

'struct mdio_device_id' is not modified in these drivers. Constifying these structures moves some data to a read-only section, so increase overall security. On a x86_64, with allmodconfig, as an example: Before: ====== text data bss dec hex filename 27014 12792 0 39806 9b7e drivers/net/phy/broadcom.o After: ===== text data bss dec hex filename 27206 12600 0 39806 9b7e drivers/net/phy/broadcom.o Signed-off-by: Christophe JAILLET Reviewed-by: Andrew Lunn Link: https://patch.msgid.link/403c381b7d9156b67ad68ffc44b8eee70c5e86a9.1736691226.git.christophe.jaillet@wanadoo.fr Signed-off-by: Jakub Kicinski

net: phy: bcm-phy-lib: Implement BroadR-Reach link modes

2024-07-15T03:38:35+00:00

Implement single-pair BroadR-Reach modes on bcm5481x PHY by Broadcom. Create set of functions alternative to IEEE 802.3 to handle configuration of these modes on compatible Broadcom PHYs. There is only subset of capabilities supported because of limited collection of hardware available for the development. For BroadR-Reach capable PHYs, the LRE (Long Reach Ethernet) alternative register set is handled. Only bcm54811 PHY is verified, for bcm54810, there is some support possible but untested. There is no auto-negotiation of the link parameters (called LDS in the Broadcom terminology, Long-Distance Signaling) for bcm54811. It should be possible to enable LDS for bcm54810. Signed-off-by: Kamil Horák (2N) Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Link: https://patch.msgid.link/20240712150709.3134474-5-kamilh@axis.com Signed-off-by: Jakub Kicinski

net: phy: provide whether link has changed in c37_read_status

2024-02-10T15:36:19+00:00

Some PHY driver might require additional regs call after genphy_c37_read_status() is called. Expand genphy_c37_read_status to provide a bool wheather the link has changed or not to permit PHY driver to skip additional regs call if nothing has changed. Every user of genphy_c37_read_status() is updated with the new additional bool. Signed-off-by: Christian Marangi Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller