From: Jakub Kicinski Date: Mon, 4 Jan 2021 21:47:17 +0000 (-0800) Subject: Merge branch 'net-dsa-lantiq_gswip-two-fixes-for-net-stable' X-Git-Tag: v5.11-rc3~39^2~1 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=08ad4839ce34cea7b5ea4ac1867a08fe96709e1a;p=linux-block.git Merge branch 'net-dsa-lantiq_gswip-two-fixes-for-net-stable' Martin Blumenstingl says: ==================== net: dsa: lantiq_gswip: two fixes for -net/-stable While testing the lantiq_gswip driver in OpenWrt at least one board had a non-working Ethernet port connected to an internal 100Mbit/s PHY22F GPHY. The problem which could be observed: - the PHY would detect the link just fine - ethtool stats would see the TX counter rise - the RX counter in ethtool was stuck at zero It turns out that two independent patches are needed to fix this: - first we need to enable the MII data lines also for internal PHYs - second we need to program the GSWIP_MII_CFG registers for all ports except the CPU port These two patches have also been tested by back-porting them on top of Linux 5.4.86 in OpenWrt. Special thanks to Hauke for debugging and brainstorming this on IRC with me! ==================== Link: https://lore.kernel.org/r/20210103012544.3259029-1-martin.blumenstingl@googlemail.com Signed-off-by: Jakub Kicinski --- 08ad4839ce34cea7b5ea4ac1867a08fe96709e1a