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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2ebe1571-e53a-45ba-34d9-08dbbc3be58f X-MS-Exchange-CrossTenant-AuthSource: AM0PR04MB6452.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Sep 2023 13:49:24.5258 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: WN0zbgKSr7IbtrN+B24lY/U491xxOPXwrPEqQUNFdnHgRDYkvpTyHqKnjrUUOkN9AkUAn/neHovZ9Xen8ghhxQ== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR04MB8396 X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC In networking, we have 2 distinct data types: - phy_interface_t describes the link between a MAC (or MAC-side PCS) and an attached PHY or SFP cage - enum ethtool_link_mode_bit_indices describes the link between a local PHY and a remote PHY (for example, gigabit RJ45 twisted copper pairs) Currently, phy_set_mode_ext(PHY_MODE_ETHERNET) takes arguments of the phy_interface_t type, and there is no way to pass an argument of the enum ethtool_link_mode_bit_indices type. The new PHY_MODE_ETHTOOL intends to address that. It is true that there is currently some overlap between these data types, namely: phy_interface_t enum ethtool_link_mode_bit_indices ----------------------------------------------------------------- PHY_INTERFACE_MODE_10GKR ETHTOOL_LINK_MODE_10000baseKR_Full_BIT PHY_INTERFACE_MODE_1000BASEKX ETHTOOL_LINK_MODE_1000baseKX_Full_BIT but those overlaps were deemed to be mistakes, and PHY-to-PHY link modes should only be added to ethtool_link_mode_bit_indices going forward. Thus, I believe that the distinction is necessary, rather than hacking more improper PHY modes. Some of the PHY-to-PHY link modes which may be added in the future (to ethtool_link_mode_bit_indices and not to phy_interface_t) are: ETHTOOL_LINK_MODE_100000baseKP4_Full_BIT ETHTOOL_LINK_MODE_100000baseCR10_Full_BIT ETHTOOL_LINK_MODE_25000baseKR_S_Full_BIT ETHTOOL_LINK_MODE_25000baseCR_S_Full_BIT One user of PHY_MODE_ETHTOOL will be the MTIP backplane AN/LT + Lynx SerDes PHY combo, where the backplane autoneg protocol (IEEE 802.3 clause 73) selects the operating PHY-to-PHY link mode. There are electrical differences between the PHY-to-PHY backplane link modes (like ETHTOOL_LINK_MODE_10000baseKR_Full_BIT) and their non-backplane counterparts (like PHY_INTERFACE_MODE_10GBASER), namely the number of TX signal equalization taps and their configurability. This further justifies distinguishing between them in the generic PHY API. Signed-off-by: Vladimir Oltean --- v1->v2: rename PHY_MODE_ETHERNET_PHY to PHY_MODE_ETHTOOL at Russell's suggestion include/linux/phy/phy.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/phy/phy.h b/include/linux/phy/phy.h index 6be348f1fa0e..72ef4afcda81 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_ETHTOOL, PHY_MODE_MIPI_DPHY, PHY_MODE_SATA, PHY_MODE_LVDS, @@ -52,7 +53,7 @@ enum phy_media { }; enum phy_status_type { - /* Valid for PHY_MODE_ETHERNET */ + /* Valid for PHY_MODE_ETHERNET and PHY_MODE_ETHTOOL */ PHY_STATUS_CDR_LOCK, };