[PATCH 5.4 18/62] net: dsa: lantiq_gswip: Exclude RMII from modes that report 1 GbE

[Greg Kroah-Hartman]

From: Aleksander Jan Bajkowski <ol...@wp.pl>

[ Upstream commit 3545454c7801e391b0d966f82c98614d45394770 ]

Exclude RMII from modes that report 1 GbE support. Reduced MII supports
up to 100 MbE.

Fixes: 14fceff4771e ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
Signed-off-by: Aleksander Jan Bajkowski <ol...@wp.pl>
Reviewed-by: Florian Fainelli <f.faine...@gmail.com>
Link: https://lore.kernel.org/r/20210107195818.3878-1-ol...@wp.pl
Signed-off-by: Jakub Kicinski <k...@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>
---
 drivers/net/dsa/lantiq_gswip.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/drivers/net/dsa/lantiq_gswip.c
+++ b/drivers/net/dsa/lantiq_gswip.c
@@ -1419,11 +1419,12 @@ static void gswip_phylink_validate(struc
        phylink_set(mask, Pause);
        phylink_set(mask, Asym_Pause);
 
-       /* With the exclusion of MII and Reverse MII, we support Gigabit,
-        * including Half duplex
+       /* With the exclusion of MII, Reverse MII and Reduced MII, we
+        * support Gigabit, including Half duplex
         */
        if (state->interface != PHY_INTERFACE_MODE_MII &&
-           state->interface != PHY_INTERFACE_MODE_REVMII) {
+           state->interface != PHY_INTERFACE_MODE_REVMII &&
+           state->interface != PHY_INTERFACE_MODE_RMII) {
                phylink_set(mask, 1000baseT_Full);
                phylink_set(mask, 1000baseT_Half);
        }