amd-xgbe: align CL37 AN sequence as per databook

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[ Upstream commit 42fd432fe6 ]

Update the Clause 37 Auto-Negotiation implementation to properly align
with the PCS hardware specifications:
- Fix incorrect bit settings in Link Status and Link Duplex fields
- Implement missing sequence steps 2 and 7

These changes ensure CL37 auto-negotiation protocol follows the exact
sequence patterns as specified in the hardware databook.

Fixes: 1bf40ada62 ("amd-xgbe: Add support for clause 37 auto-negotiation")
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Link: https://patch.msgid.link/20250630192636.3838291-1-Raju.Rangoju@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Raju Rangoju 2025-07-01 00:56:36 +05:30 • committed by Greg Kroah-Hartman

parent f358d949ce

commit 6074bff08a

3 changed files with 13 additions and 2 deletions

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2

drivers/net/ethernet/amd/xgbe/xgbe-common.h

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9

drivers/net/ethernet/amd/xgbe/xgbe-mdio.c

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4

drivers/net/ethernet/amd/xgbe/xgbe.h

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