According to datasheet, the command opcode must be specified
into bits [14:12] of the Extended Port Control register (EPC).

Fixes: de776d0d316f ("net: dsa: mv88e6xxx: add support for mv88e6393x family")
Signed-off-by: Marco Migliore <m.migliore@tiesse.com>
---
 drivers/net/dsa/mv88e6xxx/port.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx/port.h b/drivers/net/dsa/mv88e6xxx/port.h
index aec9d4fd20e3..d19b6303b91f 100644
--- a/drivers/net/dsa/mv88e6xxx/port.h
+++ b/drivers/net/dsa/mv88e6xxx/port.h
@@ -276,7 +276,7 @@
 /* Offset 0x10: Extended Port Control Command */
 #define MV88E6393X_PORT_EPC_CMD		0x10
 #define MV88E6393X_PORT_EPC_CMD_BUSY	0x8000
-#define MV88E6393X_PORT_EPC_CMD_WRITE	0x0300
+#define MV88E6393X_PORT_EPC_CMD_WRITE	0x3000
 #define MV88E6393X_PORT_EPC_INDEX_PORT_ETYPE	0x02
 
 /* Offset 0x11: Extended Port Control Data */
-- 
2.34.1

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller <davem@davemloft.net>:

On Tue, 16 May 2023 09:38:54 +0200 you wrote:
> According to datasheet, the command opcode must be specified
> into bits [14:12] of the Extended Port Control register (EPC).
> 
> Fixes: de776d0d316f ("net: dsa: mv88e6xxx: add support for mv88e6393x family")
> Signed-off-by: Marco Migliore <m.migliore@tiesse.com>
> ---
>  drivers/net/dsa/mv88e6xxx/port.h | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)

Here is the summary with links:
  - [net] net: dsa: mv88e6xxx: Fix mv88e6393x EPC write command offset
    https://git.kernel.org/netdev/net/c/1323e0c6e1d7

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
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On Tue, May 16, 2023 at 09:38:54AM +0200, Marco Migliore wrote:
> According to datasheet, the command opcode must be specified
> into bits [14:12] of the Extended Port Control register (EPC).
> 
> Fixes: de776d0d316f ("net: dsa: mv88e6xxx: add support for mv88e6393x family")
> Signed-off-by: Marco Migliore <m.migliore@tiesse.com>

Hi Marco

Thanks for the respin.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>

For the next time you submit a patch, it is normal to put a version in the Subject line:

[PATCH net v2] net: dsa: mv88e6xxx: Fix mv88e6393x EPC write command offset

That helps us keep track of the versions, and makes it clear which is
the latest version.

    Andrew