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* [PATCH 0/2] net: phy: micrel: add Microchip KSZ 9897 Switch PHY support
@ 2022-02-04 13:36 Enguerrand de Ribaucourt
  2022-02-04 13:36 ` [PATCH 1/2] " Enguerrand de Ribaucourt
  2022-02-04 13:36 ` [PATCH 2/2] net: phy: micrel: add Microchip KSZ 9477 to the device table Enguerrand de Ribaucourt
  0 siblings, 2 replies; 7+ messages in thread
From: Enguerrand de Ribaucourt @ 2022-02-04 13:36 UTC (permalink / raw)
  To: netdev; +Cc: andrew, hkallweit1, linux

Hi,
I've recently used a KSZ9897 DSA switch that was connected to an i.MX6 CPU
through SPI for the DSA control, and RMII as the data cpu-port. The SPI/DSA was
well supported in drivers/net/dsa/microchip/ksz9477.c, but the RMII connection
was not working. I would like to upstream the patch I developped to add support
for the KSZ9897 RMII bus. This is required for the cpu-port capability of
the DSA switch and have a complete support of this DSA switch.

Since PHY_ID_KSZ9897 and PHY_ID_KSZ8081 are very close, I had to modify the mask
used for the latter. I don't have this one, so it would be very appreciated if
someone could test this patch with the KSZ8081 or KSZ8091. In particular, I'd
like to know the exact phy_id used by those models to check that the new mask is
valid, and that they don't collide with the KSZ9897. The phy_ids cannot be found
in the datasheet, so I couldn't verify that myself.

My definition of the struct phy_driver was copied from the similar
PHY_ID_KSZ8873MLL and proved to work on a 5.4 kernel. However, my patch may not
support the Gigabit Ethernet but works reliably otherwise.

The second patch fixes an issue with the KSZ9477 declaration I noticed. I
couldn't find PHY_ID_KSZ9477, or an equivalent mask in the MODULE_DEVICE_TABLE
declaration. I fear the driver is not initialized properly with this PHY. I
don't have this model either so it would be great if someone could test this.



^ permalink raw reply	[flat|nested] 7+ messages in thread

end of thread, other threads:[~2022-02-04 17:04 UTC | newest]

Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-02-04 13:36 [PATCH 0/2] net: phy: micrel: add Microchip KSZ 9897 Switch PHY support Enguerrand de Ribaucourt
2022-02-04 13:36 ` [PATCH 1/2] " Enguerrand de Ribaucourt
2022-02-04 14:05   ` Andrew Lunn
2022-02-04 15:17     ` Enguerrand de Ribaucourt
2022-02-04 17:04       ` Andrew Lunn
2022-02-04 13:36 ` [PATCH 2/2] net: phy: micrel: add Microchip KSZ 9477 to the device table Enguerrand de Ribaucourt
2022-02-04 14:06   ` Andrew Lunn

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