From 1237c2d4a8db79dfd4369bff6930b0e385ed7d5c Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Mon, 2 Jun 2025 21:39:49 +0200 Subject: [PATCH] net: dsa: b53: do not enable EEE on bcm63xx MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit BCM63xx internal switches do not support EEE, but provide multiple RGMII ports where external PHYs may be connected. If one of these PHYs are EEE capable, we may try to enable EEE for the MACs, which then hangs the system on access of the (non-existent) EEE registers. Fix this by checking if the switch actually supports EEE before attempting to configure it. Fixes: 22256b0afb12 ("net: dsa: b53: Move EEE functions to b53") Reviewed-by: Florian Fainelli Tested-by: Álvaro Fernández Rojas Signed-off-by: Jonas Gorski Link: https://patch.msgid.link/20250602193953.1010487-2-jonas.gorski@gmail.com Signed-off-by: Paolo Abeni --- drivers/net/dsa/b53/b53_common.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -2338,6 +2338,9 @@ int b53_eee_init(struct dsa_switch *ds, { int ret; + if (!b53_support_eee(ds, port)) + return 0; + ret = phy_init_eee(phy, false); if (ret) return 0; @@ -2352,7 +2355,7 @@ bool b53_support_eee(struct dsa_switch * { struct b53_device *dev = ds->priv; - return !is5325(dev) && !is5365(dev); + return !is5325(dev) && !is5365(dev) && !is63xx(dev); } EXPORT_SYMBOL(b53_support_eee);