openwrt/target/linux/ramips/files-4.14/drivers
Chen Minqiang b40316c21a mt7620: gsw: make IntPHY and ExtPHY share mdio addr 4 possible
To share mdio addr for IntPHY and ExtPHY,
as described in the documentation (MT7620_ProgrammingGuide.pdf).
(refer: http://download.villagetelco.org/hardware/MT7620/MT7620_ProgrammingGuide.pdf)

when port4 setup to work as gmac mode, dts like:

&gsw {
    mediatek,port4 = "gmac";
};

we should set SYSCFG1.GE2_MODE==0x0 (RGMII).
but SYSCFG1.GE2_MODE may have been set to 3(RJ-45) by uboot/default
so we need to re-set it to 0x0

before this changes:
gsw: 4FE + 2GE may not work correctly and MDIO addr 4 cannot be used by ExtPHY

after this changes:
gsw: 4FE + 2GE works and MDIO addr 4 can be used by ExtPHY

Signed-off-by: Chen Minqiang <ptpt52@gmail.com>
(cherry picked from commit f6d81e2fa1)
2018-08-06 09:15:09 +02:00
..
mmc/host/mtk-mmc Revert "ramips: mmc: Sync with staging drivers" 2018-05-15 12:42:40 +02:00
net/ethernet/mtk mt7620: gsw: make IntPHY and ExtPHY share mdio addr 4 possible 2018-08-06 09:15:09 +02:00