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net: dsa: yt921x: Fix external port detection

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The YT921x switch has two MAC ports: 8 and 9. Currently, the driver
only allows port 8 as an external port, while port 9 is not working:

yt921x mdio-bus:1d: Wrong mode 23 on port 9
yt921x mdio-bus:1d: Failed to config port 9: -22

Update the external port detection logic to enable the external PHY
connected to port 9.

Cc: stable+noautosel@kernel.org # never worked
Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Link: https://patch.msgid.link/20260710100000.3018614-1-amadeus@jmu.edu.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Chukun Pan
2026-07-21 11:21:37 -07:00
committed by Jakub Kicinski
parent e372a49cb8
commit f2596ce59b
1 changed files with 1 additions and 1 deletions
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drivers/net/dsa/yt921x.h
+1 -1
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@@ -854,7 +854,7 @@ enum yt921x_fdb_entry_status {
#define YT921X_PORT_NUM 11
#define yt921x_port_is_internal(port) ((port) < 8)
#define yt921x_port_is_external(port) (8 <= (port) && (port) < 9)
#define yt921x_port_is_external(port) ((port) == 8 || (port) == 9)
struct yt921x_mib {
u64 rx_broadcast;