This is first time that the NETC IP is applied on i.MX MPU platform. Its revision has been upgraded to 4.1, which is very different from the NETC of LS1028A (its revision is 1.0). Therefore, some existing drivers of NETC devices in the Linux kernel are not compatible with the current hardware. For example, the fsl-enetc driver is used to drive the ENETC PF of LS1028A, but for i.MX95 ENETC PF, its registers and tables configuration are very different from those of LS1028A, and only the station interface (SI) part remains basically the same. For the SI part, Vladimir has separated the fsl-enetc-core driver, so we can reuse this driver on i.MX95. However, for other parts of PF, the fsl-enetc driver cannot be reused, so the nxp-enetc4 driver is added to support revision 4.1 and later. During the development process, we found that the two PF drivers have some interfaces with basically the same logic, and the only difference is the hardware configuration. So in order to reuse these interfaces and reduce code redundancy, we extracted these interfaces and compiled them into a separate nxp-enetc-pf-common driver for use by the two PF drivers. In addition, we have developed the nxp-netc-blk-ctrl driver, which is used to control three blocks, namely Integrated Endpoint Register Block (IERB), Privileged Register Block (PRB) and NETCMIX block. The IERB contains registers that are used for pre-boot initialization, debug, and non-customer configuration. The PRB controls global reset and global error handling for NETC. The NETCMIX block is mainly used to set MII protocol and PCS protocol of the links, it also contains settings for some other functions. --- v1 Link: https://lore.kernel.org/imx/20241009095116.147412-1-wei.fang@xxxxxxx/ v2 Link: https://lore.kernel.org/imx/20241015125841.1075560-1-wei.fang@xxxxxxx/ --- Clark Wang (2): net: enetc: extract enetc_int_vector_init/destroy() from enetc_alloc_msix() net: enetc: optimize the allocation of tx_bdr Vladimir Oltean (1): net: enetc: remove ERR050089 workaround for i.MX95 Wei Fang (10): dt-bindings: net: add compatible string for i.MX95 EMDIO dt-bindings: net: add i.MX95 ENETC support dt-bindings: net: add bindings for NETC blocks control net: enetc: add initial netc-blk-ctrl driver support net: enetc: extract common ENETC PF parts for LS1028A and i.MX95 platforms net: enetc: build enetc_pf_common.c as a separate module PCI: Add NXP NETC vendor ID and device IDs net: enetc: add i.MX95 EMDIO support net: enetc: add preliminary support for i.MX95 ENETC PF MAINTAINERS: update ENETC driver files and maintainers .../bindings/net/fsl,enetc-mdio.yaml | 11 +- .../devicetree/bindings/net/fsl,enetc.yaml | 22 +- .../bindings/net/nxp,netc-blk-ctrl.yaml | 105 +++ MAINTAINERS | 7 + drivers/net/ethernet/freescale/enetc/Kconfig | 40 + drivers/net/ethernet/freescale/enetc/Makefile | 9 + drivers/net/ethernet/freescale/enetc/enetc.c | 220 ++--- drivers/net/ethernet/freescale/enetc/enetc.h | 19 +- .../net/ethernet/freescale/enetc/enetc4_hw.h | 153 ++++ .../net/ethernet/freescale/enetc/enetc4_pf.c | 753 ++++++++++++++++++ .../ethernet/freescale/enetc/enetc_ethtool.c | 68 +- .../net/ethernet/freescale/enetc/enetc_hw.h | 46 +- .../ethernet/freescale/enetc/enetc_pci_mdio.c | 21 + .../net/ethernet/freescale/enetc/enetc_pf.c | 303 +------ .../net/ethernet/freescale/enetc/enetc_pf.h | 37 + .../freescale/enetc/enetc_pf_common.c | 337 ++++++++ .../ethernet/freescale/enetc/netc_blk_ctrl.c | 440 ++++++++++ include/linux/fsl/netc_global.h | 19 + include/linux/pci_ids.h | 7 + 19 files changed, 2208 insertions(+), 409 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/nxp,netc-blk-ctrl.yaml create mode 100644 drivers/net/ethernet/freescale/enetc/enetc4_hw.h create mode 100644 drivers/net/ethernet/freescale/enetc/enetc4_pf.c create mode 100644 drivers/net/ethernet/freescale/enetc/enetc_pf_common.c create mode 100644 drivers/net/ethernet/freescale/enetc/netc_blk_ctrl.c create mode 100644 include/linux/fsl/netc_global.h -- 2.34.1
