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| author | Chen Minqiang <ptpt52@gmail.com> | 2018-08-04 01:14:07 +0800 |
|---|---|---|
| committer | John Crispin <john@phrozen.org> | 2018-08-06 09:15:09 +0200 |
| commit | b40316c21a960d332bc9b04ee1791b8aafcf8786 (patch) | |
| tree | cc0a677bf54d9c7a7de22e0cf82abdd9b42d6f72 | |
| parent | f63463591b9f664353b4375f5dfdba980c7bdc07 (diff) | |
| download | upstream-b40316c21a960d332bc9b04ee1791b8aafcf8786.tar.gz upstream-b40316c21a960d332bc9b04ee1791b8aafcf8786.tar.bz2 upstream-b40316c21a960d332bc9b04ee1791b8aafcf8786.zip | |
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 f6d81e2fa1f110d8025eaa434d67d0014aca1d42)
| -rw-r--r-- | target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/gsw_mt7620.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/gsw_mt7620.c b/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/gsw_mt7620.c index a4602c4586..fb427ee6fb 100644 --- a/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/gsw_mt7620.c +++ b/target/linux/ramips/files-4.14/drivers/net/ethernet/mtk/gsw_mt7620.c @@ -168,6 +168,12 @@ static void mt7620_hw_init(struct mt7620_gsw *gsw, struct device_node *np) _mt7620_mii_write(gsw, 4, 16, 0x1313); _mt7620_mii_write(gsw, 4, 0, 0x3100); pr_info("gsw: setting port4 to ephy mode\n"); + } else if (!mdio_mode) { + u32 val = rt_sysc_r32(SYSC_REG_CFG1); + + val &= ~(3 << 14); + rt_sysc_w32(val, SYSC_REG_CFG1); + pr_info("gsw: setting port4 to gmac mode\n"); } } |