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57e9e4d702
Extend the Renesas GBETH stmmac glue driver to support the RZ/T2H SoC, where the GMAC is connected through a MIIC PCS. Introduce a new `has_pcs` flag in `struct renesas_gbeth_of_data` to indicate when PCS handling is required. When enabled, the driver parses the `pcs-handle` phandle, creates a PCS instance with `miic_create()`, and wires it into phylink. Proper cleanup is done with `miic_destroy()`. New init/exit/select hooks are added to `plat_stmmacenet_data` for PCS integration. Update Kconfig to select `PCS_RZN1_MIIC` when building the Renesas GBETH driver so the PCS support is always available. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://patch.msgid.link/20250908105901.3198975-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>