From: Lorenzo Bianconi <lorenzo@kernel•org>
To: Andrew Lunn <andrew+netdev@lunn•ch>,
"David S. Miller" <davem@davemloft•net>,
Eric Dumazet <edumazet@google•com>,
Jakub Kicinski <kuba@kernel•org>,
Paolo Abeni <pabeni@redhat•com>
Cc: Simon Horman <horms@kernel•org>,
linux-arm-kernel@lists•infradead.org,
linux-mediatek@lists•infradead.org, netdev@vger•kernel.org,
Xuegang Lu <xuegang.lu@airoha•com>,
Lorenzo Bianconi <lorenzo@kernel•org>
Subject: [PATCH net-next 0/6] net: airoha: Preliminary patches to support multiple net_devices connected to the same GDM port
Date: Wed, 27 May 2026 12:21:14 +0200 [thread overview]
Message-ID: <20260527-airoha-eth-multi-serdes-preliminary-v1-0-ec6ed73ef7fc@kernel.org> (raw)
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.
---
Lorenzo Bianconi (6):
net: airoha: Introduce airoha_gdm_dev struct
net: airoha: Move airoha_qdma pointer in airoha_gdm_dev struct
net: airoha: Rely on airoha_gdm_dev pointer in airoha_is_lan_gdm_port()
net: airoha: Move qos_sq_bmap in airoha_gdm_dev struct
net: airoha: Move {cpu,fwd}_tx_packets in airoha_gdm_dev struct
net: airoha: Rename airoha_set_gdm2_loopback in airoha_enable_gdm2_loopback
drivers/net/ethernet/airoha/airoha_eth.c | 445 ++++++++++++++++++-------------
drivers/net/ethernet/airoha/airoha_eth.h | 35 ++-
drivers/net/ethernet/airoha/airoha_ppe.c | 34 +--
3 files changed, 297 insertions(+), 217 deletions(-)
---
base-commit: aa064a614efcfa4c300609d1f01134e99a12ad10
change-id: 20260527-airoha-eth-multi-serdes-preliminary-51204fb642fc
Best regards,
--
Lorenzo Bianconi <lorenzo@kernel•org>
next reply other threads:[~2026-05-27 10:21 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-27 10:21 Lorenzo Bianconi [this message]
2026-05-27 10:21 ` [PATCH net-next 1/6] net: airoha: Introduce airoha_gdm_dev struct Lorenzo Bianconi
2026-05-28 12:38 ` Lorenzo Bianconi
2026-05-28 13:42 ` Alexander Lobakin
2026-05-28 16:09 ` Lorenzo Bianconi
2026-05-29 15:04 ` Alexander Lobakin
2026-05-29 16:43 ` Lorenzo Bianconi
2026-05-27 10:21 ` [PATCH net-next 2/6] net: airoha: Move airoha_qdma pointer in " Lorenzo Bianconi
2026-05-27 10:21 ` [PATCH net-next 3/6] net: airoha: Rely on airoha_gdm_dev pointer in airoha_is_lan_gdm_port() Lorenzo Bianconi
2026-05-27 10:21 ` [PATCH net-next 4/6] net: airoha: Move qos_sq_bmap in airoha_gdm_dev struct Lorenzo Bianconi
2026-05-28 12:49 ` Lorenzo Bianconi
2026-05-27 10:21 ` [PATCH net-next 5/6] net: airoha: Move {cpu,fwd}_tx_packets " Lorenzo Bianconi
2026-05-27 10:21 ` [PATCH net-next 6/6] net: airoha: Rename airoha_set_gdm2_loopback in airoha_enable_gdm2_loopback Lorenzo Bianconi
2026-06-02 20:30 ` [PATCH net-next 0/6] net: airoha: Preliminary patches to support multiple net_devices connected to the same GDM port patchwork-bot+netdevbpf
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