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Merge branch 'net-airoha-preliminary-patches-to-support-multiple-net_devices-connected-to-the-same-gdm-port'
Lorenzo Bianconi says: ==================== net: airoha: Preliminary patches to support multiple net_devices connected to the same GDM port EN7581 or AN7583 SoCs support connecting multiple external SerDes (e.g. Ethernet or USB SerDes) to GDM3 or GDM4 ports via a hw arbiter that manages the traffic in a TDM manner. As a result multiple net_devices can connect to the same GDM{3,4} port and there is a theoretical "1:n" relation between GDM ports and net_devices. ┌─────────────────────────────────┐ │ │ ┌──────┐ │ P1 GDM1 ├────►MT7530│ │ │ └──────┘ │ │ ETH0 (DSA conduit) │ │ │ PSE/FE │ │ │ │ │ │ │ ┌─────┐ │ P0 CDM1 ├────►QDMA0│ │ P4 P9 GDM4 │ └─────┘ └──┬─────────────────────────┬────┘ │ │ ┌──▼──┐ ┌────▼────┐ │ PPE │ │ ARB │ └─────┘ └─┬─────┬─┘ │ │ ┌──▼──┐┌─▼───┐ │ ETH ││ USB │ └─────┘└─────┘ ETH1 ETH2 This is a preliminary series to introduce support for multiple net_devices connected to the same Frame Engine (FE) GDM port (GDM3 or GDM4) via an external hw arbiter. ==================== Link: https://patch.msgid.link/20260527-airoha-eth-multi-serdes-preliminary-v1-0-ec6ed73ef7fc@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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