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Message-Id: <20230817150644.3605105-3-vladimir.oltean@nxp.com> Date: Thu, 17 Aug 2023 18:06:38 +0300 From: Vladimir Oltean <vladimir.oltean@....com> To: netdev@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org Cc: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>, Heiner Kallweit <hkallweit1@...il.com>, Andrew Lunn <andrew@...n.ch>, Florian Fainelli <f.fainelli@...il.com>, Madalin Bucur <madalin.bucur@....com>, Ioana Ciornei <ioana.ciornei@....com>, Camelia Groza <camelia.groza@....com>, Li Yang <leoyang.li@....com>, Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor@...nel.org>, Sean Anderson <sean.anderson@...o.com>, Maxime Chevallier <maxime.chevallier@...tlin.com>, Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org> Subject: [RFC PATCH net-next 2/8] phy: introduce the PHY_MODE_ETHERNET_PHY mode for phy_set_mode_ext() As opposed to PHY_MODE_ETHERNET which takes a phy_interface_t as is expected to be used by an Ethernet MAC driver, PHY_MODE_ETHERNET takes an enum ethtool_link_mode_bit_indices and expects to be used by an Ethernet PHY driver. It is true that the phy_interface_t type also contains definitions for PHY_INTERFACE_MODE_10GKR and PHY_INTERFACE_MODE_1000BASEKX, but those were deemed to be mistakes, and shouldn't be used going forward, when 10GBase-KR and 1GBase-KX are really link modes. Thus, I believe that the distinction is necessary, rather than hacking more improper PHY modes. In particular to the Lynx SerDes, it can be used (as the PMA/PMD layer) in conjunction with a separate backplane AN/LT block to form a full-fledged copper backplane Ethernet PHY. The configuration of the lanes is relatively similar to what is done for a typical MAC-to-PHY link, except that we allow tuning the electrical equalization parameters of the link (support for which will come as a separate change). Signed-off-by: Vladimir Oltean <vladimir.oltean@....com> --- include/linux/phy/phy.h | 1 + 1 file changed, 1 insertion(+) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 456d21c67e4f..7e10761303fc 100644 --- a/include/linux/phy/phy.h +++ b/include/linux/phy/phy.h @@ -39,6 +39,7 @@ enum phy_mode { PHY_MODE_UFS_HS_B, PHY_MODE_PCIE, PHY_MODE_ETHERNET, + PHY_MODE_ETHERNET_PHY, PHY_MODE_MIPI_DPHY, PHY_MODE_SATA, PHY_MODE_LVDS, -- 2.34.1
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