diff options
| author | Can Guo <can.guo@oss.qualcomm.com> | 2026-04-24 08:14:20 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-05-05 03:27:42 -0400 |
| commit | 949af038b6d2a41c54502179c5a8ddfb3d57dd17 (patch) | |
| tree | 9298ea8135a54201c4e5ff137240d1402227d74f /include/ufs | |
| parent | f2cb7c01f48caffb38e12481949dea4f9beb65dc (diff) | |
scsi: ufs: core: Add support to retrieve and store TX Equalization settings
Add support for UFS v5.0 JEDEC attributes qTxEQGnSettings and
wTxEQGnSettingsExt to enable persistent storage and retrieval of
optimal TX Equalization settings.
This provides a fast-path for TX Equalization by reusing previously
stored optimal settings, avoiding TX Equalization Training (EQTR)
procedures during subsequent Power Mode changes.
When no valid TX Equalization settings are found, fall back to full TX
EQTR procedures and optionally save the results for future use.
The validity of one set of TX Equalization settings is indicated by
Bit[15] in wTxEQGnSettingsExt.
Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Link: https://patch.msgid.link/20260424151420.111675-3-can.guo@oss.qualcomm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/ufs')
| -rw-r--r-- | include/ufs/ufs.h | 2 | ||||
| -rw-r--r-- | include/ufs/ufshcd.h | 2 |
2 files changed, 4 insertions, 0 deletions
diff --git a/include/ufs/ufs.h b/include/ufs/ufs.h index 602aa34c9822..0d48e137d66d 100644 --- a/include/ufs/ufs.h +++ b/include/ufs/ufs.h @@ -191,6 +191,8 @@ enum attr_idn { QUERY_ATTR_IDN_WB_BUF_RESIZE_HINT = 0x3C, QUERY_ATTR_IDN_WB_BUF_RESIZE_EN = 0x3D, QUERY_ATTR_IDN_WB_BUF_RESIZE_STATUS = 0x3E, + QUERY_ATTR_IDN_TX_EQ_GN_SETTINGS = 0x47, + QUERY_ATTR_IDN_TX_EQ_GN_SETTINGS_EXT = 0x48, }; /* Descriptor idn for Query requests */ diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index cfbc75d8df83..f48d6416e299 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -358,6 +358,7 @@ struct ufshcd_tx_eqtr_record { * @eqtr_record: Pointer to TX EQTR record * @is_valid: True if parameter contains valid TX Equalization settings * @is_applied: True if settings have been applied to UniPro of both sides + * @is_trained: True if parameters obtained from TX EQTR procedure */ struct ufshcd_tx_eq_params { struct ufshcd_tx_eq_settings host[UFS_MAX_LANES]; @@ -365,6 +366,7 @@ struct ufshcd_tx_eq_params { struct ufshcd_tx_eqtr_record *eqtr_record; bool is_valid; bool is_applied; + bool is_trained; }; /** |