e1915674ab
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 series introduces support for multiple net_devices connected to the
same Frame Engine (FE) GDM port (GDM3 or GDM4) via an external hw
arbiter. Please note GDM1 or GDM2 does not support the connection with
the external arbiter.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://github.com/openwrt/openwrt/pull/23481
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
38 lines
1.4 KiB
Diff
38 lines
1.4 KiB
Diff
From 917f959d54efd09719bd5047aa4b9543615e131e Mon Sep 17 00:00:00 2001
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Message-ID: <917f959d54efd09719bd5047aa4b9543615e131e.1779348625.git.lorenzo@kernel.org>
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In-Reply-To: <e15783f7c987e199ecf80b3d858ed5a86d33c508.1779348625.git.lorenzo@kernel.org>
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References: <e15783f7c987e199ecf80b3d858ed5a86d33c508.1779348625.git.lorenzo@kernel.org>
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From: Lorenzo Bianconi <lorenzo@kernel.org>
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Date: Fri, 19 Dec 2025 23:12:32 +0100
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Subject: [PATCH 10/13] net: airoha: Rename airoha_set_gdm2_loopback in
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airoha_enable_gdm2_loopback
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This is a preliminary patch in order to allow the user to select if the
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configured device will be used as hw lan or wan.
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Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
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---
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drivers/net/ethernet/airoha/airoha_eth.c | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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--- a/drivers/net/ethernet/airoha/airoha_eth.c
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+++ b/drivers/net/ethernet/airoha/airoha_eth.c
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@@ -2046,7 +2046,7 @@ static int airoha_dev_set_macaddr(struct
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return 0;
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}
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-static int airoha_set_gdm2_loopback(struct airoha_gdm_dev *dev)
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+static int airoha_enable_gdm2_loopback(struct airoha_gdm_dev *dev)
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{
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struct airoha_gdm_port *port = dev->port;
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struct airoha_eth *eth = dev->eth;
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@@ -2178,7 +2178,7 @@ static int airoha_dev_init(struct net_de
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(port->id == AIROHA_GDM3_IDX || port->id == AIROHA_GDM4_IDX)) {
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int err;
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- err = airoha_set_gdm2_loopback(dev);
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+ err = airoha_enable_gdm2_loopback(dev);
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if (err)
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return err;
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}
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