diff options
| author | Raju Rangoju <Raju.Rangoju@amd.com> | 2026-02-26 22:37:53 +0530 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-02-28 14:22:34 -0800 |
| commit | 9439a661c2e80485406ce2c90b107ca17858382d (patch) | |
| tree | f87b6195eb360823858ea6dda2de71db1c7a3803 /drivers | |
| parent | 147792c395db870756a0dc87ce656c75ae7ab7e8 (diff) | |
amd-xgbe: fix MAC_TCR_SS register width for 2.5G and 10M speeds
Extend the MAC_TCR_SS (Speed Select) register field width from 2 bits
to 3 bits to properly support all speed settings.
The MAC_TCR register's SS field encoding requires 3 bits to represent
all supported speeds:
- 0x00: 10Gbps (XGMII)
- 0x02: 2.5Gbps (GMII) / 100Mbps
- 0x03: 1Gbps / 10Mbps
- 0x06: 2.5Gbps (XGMII) - P100a only
With only 2 bits, values 0x04-0x07 cannot be represented, which breaks
2.5G XGMII mode on newer platforms and causes incorrect speed select
values to be programmed.
Fixes: 07445f3c7ca1 ("amd-xgbe: Add support for 10 Mbps speed")
Co-developed-by: Guruvendra Punugupati <Guruvendra.Punugupati@amd.com>
Signed-off-by: Guruvendra Punugupati <Guruvendra.Punugupati@amd.com>
Signed-off-by: Raju Rangoju <Raju.Rangoju@amd.com>
Link: https://patch.msgid.link/20260226170753.250312-1-Raju.Rangoju@amd.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/amd/xgbe/xgbe-common.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-common.h b/drivers/net/ethernet/amd/xgbe/xgbe-common.h index 711f295eb777..80c2c27ac9dc 100644 --- a/drivers/net/ethernet/amd/xgbe/xgbe-common.h +++ b/drivers/net/ethernet/amd/xgbe/xgbe-common.h @@ -431,7 +431,7 @@ #define MAC_SSIR_SSINC_INDEX 16 #define MAC_SSIR_SSINC_WIDTH 8 #define MAC_TCR_SS_INDEX 29 -#define MAC_TCR_SS_WIDTH 2 +#define MAC_TCR_SS_WIDTH 3 #define MAC_TCR_TE_INDEX 0 #define MAC_TCR_TE_WIDTH 1 #define MAC_TCR_VNE_INDEX 24 |