net: dsa: motorcomm: Identify port type at runtime

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The yt921x_port_is_internal/external() macros hardcoded the port layout:
they treat ports 8 and 9 as external on every chip and count the dummy
ports as internal.

Identify the actual port capabilities using chip info and track
configuration of external ports (although only SerDes is supported now).
This is a hardening and cleanup step ahead of the SerDes PCS support, no
behavior changes intended.

Signed-off-by: David Yang <mmyangfl@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/20260923021945.2203368-4-mmyangfl@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

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David Yang 2026-09-23 10:19:35 +08:00 • committed by Jakub Kicinski

parent 605597aff8

commit 07b60e1bf4

2 changed files with 35 additions and 16 deletions

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40

drivers/net/dsa/motorcomm/chip.c

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11

drivers/net/dsa/motorcomm/chip.h

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