| From foo@baz Sun 09 Feb 2020 10:56:46 PM CET |
| From: Florian Fainelli <f.fainelli@gmail.com> |
| Date: Thu, 6 Feb 2020 11:23:52 -0800 |
| Subject: net: dsa: bcm_sf2: Only 7278 supports 2Gb/sec IMP port |
| |
| From: Florian Fainelli <f.fainelli@gmail.com> |
| |
| [ Upstream commit de34d7084edd069dac5aa010cfe32bd8c4619fa6 ] |
| |
| The 7445 switch clocking profiles do not allow us to run the IMP port at |
| 2Gb/sec in a way that it is reliable and consistent. Make sure that the |
| setting is only applied to the 7278 family. |
| |
| Fixes: 8f1880cbe8d0 ("net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec") |
| Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> |
| Signed-off-by: David S. Miller <davem@davemloft.net> |
| Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| --- |
| drivers/net/dsa/bcm_sf2.c | 4 +++- |
| 1 file changed, 3 insertions(+), 1 deletion(-) |
| |
| --- a/drivers/net/dsa/bcm_sf2.c |
| +++ b/drivers/net/dsa/bcm_sf2.c |
| @@ -72,7 +72,9 @@ static void bcm_sf2_imp_setup(struct dsa |
| |
| /* Force link status for IMP port */ |
| reg = core_readl(priv, offset); |
| - reg |= (MII_SW_OR | LINK_STS | GMII_SPEED_UP_2G); |
| + reg |= (MII_SW_OR | LINK_STS); |
| + if (priv->type == BCM7278_DEVICE_ID) |
| + reg |= GMII_SPEED_UP_2G; |
| core_writel(priv, reg, offset); |
| |
| /* Enable Broadcast, Multicast, Unicast forwarding to IMP port */ |
