diff options
| author | Peter Wang <peter.wang@mediatek.com> | 2024-03-15 16:34:43 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2024-03-25 21:01:11 -0400 |
| commit | e7b3c64a2a9485c134c1b23b8ebeda004b48de74 (patch) | |
| tree | b71ef507a8da71d6c3487dea2f9d859e1df7b4e1 /drivers/ufs | |
| parent | 1c5e7221bb67d7702532ada40461b7824a6dab07 (diff) | |
scsi: ufs: mediatek: TX skew fix
Fix Mediatek TX skew issue by checking dts setting and vendor/model. Then
set PA_TACTIVATE to 8.
Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Acked-by: Chun-Hung Wu <Chun-Hung.Wu@mediatek.com>
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20240315083448.7185-3-peter.wang@mediatek.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs')
| -rw-r--r-- | drivers/ufs/host/ufs-mediatek.c | 21 | ||||
| -rw-r--r-- | drivers/ufs/host/ufs-mediatek.h | 1 |
2 files changed, 22 insertions, 0 deletions
diff --git a/drivers/ufs/host/ufs-mediatek.c b/drivers/ufs/host/ufs-mediatek.c index dd27b79519be..59ca5d937bb6 100644 --- a/drivers/ufs/host/ufs-mediatek.c +++ b/drivers/ufs/host/ufs-mediatek.c @@ -118,6 +118,13 @@ static bool ufs_mtk_is_pmc_via_fastauto(struct ufs_hba *hba) return !!(host->caps & UFS_MTK_CAP_PMC_VIA_FASTAUTO); } +static bool ufs_mtk_is_tx_skew_fix(struct ufs_hba *hba) +{ + struct ufs_mtk_host *host = ufshcd_get_variant(hba); + + return (host->caps & UFS_MTK_CAP_TX_SKEW_FIX); +} + static bool ufs_mtk_is_allow_vccqx_lpm(struct ufs_hba *hba) { struct ufs_mtk_host *host = ufshcd_get_variant(hba); @@ -629,6 +636,9 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba) if (of_property_read_bool(np, "mediatek,ufs-pmc-via-fastauto")) host->caps |= UFS_MTK_CAP_PMC_VIA_FASTAUTO; + if (of_property_read_bool(np, "mediatek,ufs-tx-skew-fix")) + host->caps |= UFS_MTK_CAP_TX_SKEW_FIX; + dev_info(hba->dev, "caps: 0x%x", host->caps); } @@ -1455,6 +1465,17 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba) if (mid == UFS_VENDOR_SAMSUNG) { ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6); ufshcd_dme_set(hba, UIC_ARG_MIB(PA_HIBERN8TIME), 10); + } else if (mid == UFS_VENDOR_MICRON) { + /* Only for the host which have TX skew issue */ + if (ufs_mtk_is_tx_skew_fix(hba) && + (STR_PRFX_EQUAL("MT128GBCAV2U31", dev_info->model) || + STR_PRFX_EQUAL("MT256GBCAV4U31", dev_info->model) || + STR_PRFX_EQUAL("MT512GBCAV8U31", dev_info->model) || + STR_PRFX_EQUAL("MT256GBEAX4U40", dev_info->model) || + STR_PRFX_EQUAL("MT512GAYAX4U40", dev_info->model) || + STR_PRFX_EQUAL("MT001TAYAX8U40", dev_info->model))) { + ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 8); + } } /* diff --git a/drivers/ufs/host/ufs-mediatek.h b/drivers/ufs/host/ufs-mediatek.h index 1670e2f6ce09..d5a92810386f 100644 --- a/drivers/ufs/host/ufs-mediatek.h +++ b/drivers/ufs/host/ufs-mediatek.h @@ -142,6 +142,7 @@ enum ufs_mtk_host_caps { */ UFS_MTK_CAP_ALLOW_VCCQX_LPM = 1 << 5, UFS_MTK_CAP_PMC_VIA_FASTAUTO = 1 << 6, + UFS_MTK_CAP_TX_SKEW_FIX = 1 << 7, }; struct ufs_mtk_crypt_cfg { |