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scsi: ufs: host: mediatek: Handle broken RTC based on DTS setting

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Introduce a mechanism to handle broken RTC by checking the DTS
setting. The configuration is specifically required for legacy platform.

Signed-off-by: Peter Wang <peter.wang@mediatek.com>
Link: https://lore.kernel.org/r/20250722030841.1998783-5-peter.wang@mediatek.com
Reviewed-by: Chun-Hung Wu <chun-hung.wu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Peter Wang 2025-07-22 11:07:19 +08:00 committed by Martin K. Petersen
parent 16b30c7a4c
commit a44ff97f89
2 changed files with 9 additions and 1 deletions
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8
drivers/ufs/host/ufs-mediatek.c
View File

@ -679,6 +679,9 @@ static void ufs_mtk_init_host_caps(struct ufs_hba *hba)
if (of_property_read_bool(np, "mediatek,ufs-rtff-mtcmos"))
host->caps |= UFS_MTK_CAP_RTFF_MTCMOS;
if (of_property_read_bool(np, "mediatek,ufs-broken-rtc"))
host->caps |= UFS_MTK_CAP_MCQ_BROKEN_RTC;
dev_info(hba->dev, "caps: 0x%x", host->caps);
}
@ -1035,8 +1038,11 @@ static int ufs_mtk_init(struct ufs_hba *hba)
shost->rpm_autosuspend_delay = MTK_RPM_AUTOSUSPEND_DELAY_MS;
hba->quirks |= UFSHCI_QUIRK_SKIP_MANUAL_WB_FLUSH_CTRL;
hba->quirks |= UFSHCD_QUIRK_MCQ_BROKEN_INTR;
hba->quirks |= UFSHCD_QUIRK_MCQ_BROKEN_RTC;
if (host->caps & UFS_MTK_CAP_MCQ_BROKEN_RTC)
hba->quirks |= UFSHCD_QUIRK_MCQ_BROKEN_RTC;
hba->vps->wb_flush_threshold = UFS_WB_BUF_REMAIN_PERCENT(80);
if (host->caps & UFS_MTK_CAP_DISABLE_AH8)

2
drivers/ufs/host/ufs-mediatek.h
View File

@ -133,6 +133,8 @@ enum ufs_mtk_host_caps {
UFS_MTK_CAP_DISABLE_MCQ = 1 << 8,
/* Control MTCMOS with RTFF */
UFS_MTK_CAP_RTFF_MTCMOS = 1 << 9,
UFS_MTK_CAP_MCQ_BROKEN_RTC = 1 << 10,
};
struct ufs_mtk_crypt_cfg {