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net: dsa: mt7530: Add the support of MT7531 switch
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Add new support for MT7531:

MT7531 is the next generation of MT7530. It is also a 7-ports switch with
5 giga embedded phys, 2 cpu ports, and the same MAC logic of MT7530. Cpu
port 6 only supports SGMII interface. Cpu port 5 supports either RGMII
or SGMII in different HW sku, but cannot be muxed to PHY of port 0/4 like
mt7530. Due to SGMII interface support, pll, and pad setting are different
from MT7530. This patch adds different initial setting, and SGMII phylink
handlers of MT7531.

MT7531 SGMII interface can be configured in following mode:
- 'SGMII AN mode' with in-band negotiation capability
    which is compatible with PHY_INTERFACE_MODE_SGMII.
- 'SGMII force mode' without in-band negotiation
    which is compatible with 10B/8B encoding of
    PHY_INTERFACE_MODE_1000BASEX with fixed full-duplex and fixed pause.
- 2.5 times faster clocked 'SGMII force mode' without in-band negotiation
    which is compatible with 10B/8B encoding of
    PHY_INTERFACE_MODE_2500BASEX with fixed full-duplex and fixed pause.

Signed-off-by: Landen Chao <[email protected]>
Signed-off-by: Sean Wang <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
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Landen Chao authored and davem330 committed Sep 14, 2020
1 parent 27834b0 commit c288575
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6 changes: 3 additions & 3 deletions drivers/net/dsa/Kconfig
Original file line number Diff line number Diff line change
Expand Up @@ -33,12 +33,12 @@ config NET_DSA_LANTIQ_GSWIP
the xrx200 / VR9 SoC.

config NET_DSA_MT7530
tristate "MediaTek MT7530 and MT7621 Ethernet switch support"
tristate "MediaTek MT753x and MT7621 Ethernet switch support"
depends on NET_DSA
select NET_DSA_TAG_MTK
help
This enables support for the MediaTek MT7530 and MT7621 Ethernet
switch chip.
This enables support for the MediaTek MT7530, MT7531, and MT7621
Ethernet switch chips.

config NET_DSA_MV88E6060
tristate "Marvell 88E6060 ethernet switch chip support"
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