From b9241f54138ca5af4d3c5ca6db56be83d7491508 Mon Sep 17 00:00:00 2001 From: "Russell King (Oracle)" Date: Mon, 15 Nov 2021 17:11:17 +0000 Subject: [PATCH] net: document SMII and correct phylink's new validation mechanism SMII has not been documented in the kernel, but information on this PHY interface mode has been recently found. Document it, and correct the recently introduced phylink handling for this interface mode. Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn Link: https://lore.kernel.org/r/E1mmfVl-0075nP-14@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski --- Documentation/networking/phy.rst | 5 +++++ drivers/net/phy/phylink.c | 2 +- include/linux/phy.h | 2 +- 3 files changed, 7 insertions(+), 2 deletions(-) diff --git a/Documentation/networking/phy.rst b/Documentation/networking/phy.rst index 571ba08..d43da70 100644 --- a/Documentation/networking/phy.rst +++ b/Documentation/networking/phy.rst @@ -237,6 +237,11 @@ negotiation results. Some of the interface modes are described below: +``PHY_INTERFACE_MODE_SMII`` + This is serial MII, clocked at 125MHz, supporting 100M and 10M speeds. + Some details can be found in + https://opencores.org/ocsvn/smii/smii/trunk/doc/SMII.pdf + ``PHY_INTERFACE_MODE_1000BASEX`` This defines the 1000BASE-X single-lane serdes link as defined by the 802.3 standard section 36. The link operates at a fixed bit rate of diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 33462fd..f7156b6 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -336,6 +336,7 @@ void phylink_get_linkmodes(unsigned long *linkmodes, phy_interface_t interface, case PHY_INTERFACE_MODE_REVRMII: case PHY_INTERFACE_MODE_RMII: + case PHY_INTERFACE_MODE_SMII: case PHY_INTERFACE_MODE_REVMII: case PHY_INTERFACE_MODE_MII: caps |= MAC_10HD | MAC_10FD; @@ -385,7 +386,6 @@ void phylink_get_linkmodes(unsigned long *linkmodes, phy_interface_t interface, case PHY_INTERFACE_MODE_NA: case PHY_INTERFACE_MODE_MAX: - case PHY_INTERFACE_MODE_SMII: break; } diff --git a/include/linux/phy.h b/include/linux/phy.h index 96e43fb..1e57cdd 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -99,7 +99,7 @@ extern const int phy_10gbit_features_array[1]; * @PHY_INTERFACE_MODE_RGMII_RXID: RGMII with Internal RX delay * @PHY_INTERFACE_MODE_RGMII_TXID: RGMII with Internal RX delay * @PHY_INTERFACE_MODE_RTBI: Reduced TBI - * @PHY_INTERFACE_MODE_SMII: ??? MII + * @PHY_INTERFACE_MODE_SMII: Serial MII * @PHY_INTERFACE_MODE_XGMII: 10 gigabit media-independent interface * @PHY_INTERFACE_MODE_XLGMII:40 gigabit media-independent interface * @PHY_INTERFACE_MODE_MOCA: Multimedia over Coax -- 2.7.4