net: stmmac: configure SerDes according to the interface mode

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Intel platform will configure the SerDes through PMC API based on the
provided interface mode.

This patch adds several new functions below:-
- intel_tsn_lane_is_available(): This new function reads FIA lane
  ownership registers and common lane registers through IPC commands
  to know which lane the mGbE port is assigned to.
- intel_mac_finish(): To configure the SerDes based on the assigned
  lane and latest interface mode, it sends IPC command to the PMC through
  PMC driver/API. The PMC acts as a proxy for R/W on behalf of the driver.
- intel_set_reg_access(): Set the register access to the available TSN
  interface.

Signed-off-by: Choong Yong Liang <yong.liang.choong@linux.intel.com>
Link: https://patch.msgid.link/20250227121522.1802832-6-yong.liang.choong@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Choong Yong Liang 2025-02-27 20:15:21 +08:00 • committed by Jakub Kicinski

parent e654cfc718

commit a42f6b3f1c

3 changed files with 204 additions and 5 deletions

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1

drivers/net/ethernet/stmicro/stmmac/Kconfig

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179

drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c

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29

drivers/net/ethernet/stmicro/stmmac/dwmac-intel.h

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