Commit 98c5f7d4 authored Feb 24, 2020 by Florian Fainelli Committed by David S. Miller Feb 26, 2020

net: dsa: bcm_sf2: Forcibly configure IMP port for 1Gb/sec



We are still experiencing some packet loss with the existing advanced
congestion buffering (ACB) settings with the IMP port configured for
2Gb/sec, so revert to conservative link speeds that do not produce
packet loss until this is resolved.

Fixes: 8f1880cb ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec")
Fixes: de34d708 ("net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 574b238f

drivers/net/dsa/bcm_sf2.c

+1 −2

Original line number	Diff line number	Diff line
		@@ -69,8 +69,7 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
		/* Force link status for IMP port */
		reg = core_readl(priv, offset);
		reg \|= (MII_SW_OR \| LINK_STS);
		if (priv->type == BCM7278_DEVICE_ID)
		reg \|= GMII_SPEED_UP_2G;
		reg &= ~GMII_SPEED_UP_2G;
		core_writel(priv, reg, offset);

		/* Enable Broadcast, Multicast, Unicast forwarding to IMP port */

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