forked from Openwrt-EcoNet/openwrt
83648084cc
Reorganize backported 6.12 generic patches, grouping them by following a standard naming XXX-XX-v6.x-patch-file-name.patch. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
48 lines
1.6 KiB
Diff
48 lines
1.6 KiB
Diff
From 1237c2d4a8db79dfd4369bff6930b0e385ed7d5c Mon Sep 17 00:00:00 2001
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From: Jonas Gorski <jonas.gorski@gmail.com>
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Date: Mon, 2 Jun 2025 21:39:49 +0200
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Subject: [PATCH] net: dsa: b53: do not enable EEE on bcm63xx
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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BCM63xx internal switches do not support EEE, but provide multiple RGMII
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ports where external PHYs may be connected. If one of these PHYs are EEE
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capable, we may try to enable EEE for the MACs, which then hangs the
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system on access of the (non-existent) EEE registers.
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Fix this by checking if the switch actually supports EEE before
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attempting to configure it.
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Fixes: 22256b0afb12 ("net: dsa: b53: Move EEE functions to b53")
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Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
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Tested-by: Álvaro Fernández Rojas <noltari@gmail.com>
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Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
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Link: https://patch.msgid.link/20250602193953.1010487-2-jonas.gorski@gmail.com
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Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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---
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drivers/net/dsa/b53/b53_common.c | 5 ++++-
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1 file changed, 4 insertions(+), 1 deletion(-)
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--- a/drivers/net/dsa/b53/b53_common.c
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+++ b/drivers/net/dsa/b53/b53_common.c
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@@ -2353,6 +2353,9 @@ int b53_eee_init(struct dsa_switch *ds,
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{
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int ret;
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+ if (!b53_support_eee(ds, port))
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+ return 0;
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+
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ret = phy_init_eee(phy, false);
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if (ret)
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return 0;
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@@ -2367,7 +2370,7 @@ bool b53_support_eee(struct dsa_switch *
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{
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struct b53_device *dev = ds->priv;
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- return !is5325(dev) && !is5365(dev);
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+ return !is5325(dev) && !is5365(dev) && !is63xx(dev);
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}
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EXPORT_SYMBOL(b53_support_eee);
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