diff options
| author | Can Guo <can.guo@oss.qualcomm.com> | 2026-05-01 06:16:40 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2026-05-22 21:14:59 -0400 |
| commit | 8933fa6695aaea6559d3469581139a4c1f427369 (patch) | |
| tree | a6b9cddba4dfe4dd4bbcc18673b59c6f576e0cb6 | |
| parent | 09be9d404f42fd2e7d4d378cae07499879f837f4 (diff) | |
scsi: ufs: core: Add a quirk for extended TX EQTR Adapt L0L1L2L3 length
Add a quirk to support TX Equalization Training (EQTR) using Adapt
L0L1L2L3 length which is larger than what is allowed by M-PHY spec ver
6.0.
Signed-off-by: Can Guo <can.guo@oss.qualcomm.com>
Reviewed-by: Bean Huo <beanhuo@micron.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Reviewed-by: Ziqi Chen <ziqi.chen@oss.qualcomm.com>
Link: https://patch.msgid.link/20260501131641.826258-2-can.guo@oss.qualcomm.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| -rw-r--r-- | drivers/ufs/core/ufs-txeq.c | 8 | ||||
| -rw-r--r-- | include/ufs/ufshcd.h | 7 |
2 files changed, 13 insertions, 2 deletions
diff --git a/drivers/ufs/core/ufs-txeq.c b/drivers/ufs/core/ufs-txeq.c index 4b264adfdf49..aa64f2bf4f1e 100644 --- a/drivers/ufs/core/ufs-txeq.c +++ b/drivers/ufs/core/ufs-txeq.c @@ -885,7 +885,9 @@ static int ufshcd_setup_tx_eqtr_adapt_length(struct ufs_hba *hba, if (adapt_l0l1l2l3_cap_local > ADAPT_L0L1L2L3_LENGTH_MAX) { dev_err(hba->dev, "local RX_HS_G%u_ADAPT_INITIAL_L0L1L2L3_CAP (0x%x) exceeds MAX\n", gear, adapt_l0l1l2l3_cap_local); - return -EINVAL; + + if (!(hba->quirks & UFSHCD_QUIRK_EXTENDED_TX_EQTR_ADAPT_LENGTH_L0L1L2L3)) + return -EINVAL; } ret = ufshcd_dme_get(hba, UIC_ARG_MIB(PA_PEERRXHSG6ADAPTINITIALL0L1L2L3), @@ -896,7 +898,9 @@ static int ufshcd_setup_tx_eqtr_adapt_length(struct ufs_hba *hba, if (adapt_l0l1l2l3_cap_peer > ADAPT_L0L1L2L3_LENGTH_MAX) { dev_err(hba->dev, "peer RX_HS_G%u_ADAPT_INITIAL_L0L1L2L3_CAP (0x%x) exceeds MAX\n", gear, adapt_l0l1l2l3_cap_peer); - return -EINVAL; + + if (!(hba->quirks & UFSHCD_QUIRK_EXTENDED_TX_EQTR_ADAPT_LENGTH_L0L1L2L3)) + return -EINVAL; } t_adapt_l0l1l2l3_local = adapt_cap_to_t_adapt_l0l1l2l3(adapt_l0l1l2l3_cap_local); diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index f48d6416e299..3eaae082329c 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -806,6 +806,13 @@ enum ufshcd_quirks { * delay after enabling VCC to ensure it's stable. */ UFSHCD_QUIRK_VCC_ON_DELAY = 1 << 27, + + /* + * This quirk indicates that Host supports TX Equalization Training + * (EQTR) using Adapt L0L1L2L3 length which is larger than what is + * allowed by M-PHY spec ver 6.0. + */ + UFSHCD_QUIRK_EXTENDED_TX_EQTR_ADAPT_LENGTH_L0L1L2L3 = 1 << 28, }; enum ufshcd_caps { |