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scsi: ufs: core: Add a quirk for extended TX EQTR Adapt L0L1L2L3 length

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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>
This commit is contained in:
Can Guo 2026-05-01 06:16:40 -07:00 committed by Martin K. Petersen
parent 09be9d404f
commit 8933fa6695
2 changed files with 13 additions and 2 deletions
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8
drivers/ufs/core/ufs-txeq.c
View File

@ -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);

7
include/ufs/ufshcd.h
View File

@ -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 {