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UPSTREAM: scsi: ufs-mediatek: fix HOST_PA_TACTIVATE quirk for Samsung UFS Devices

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Device quirk "UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE" is enabled for all
Samsung devices by default currently.

However MediaTek UFS host requires different host PA_TACTIVATE
configuration. Hence clear this quirk first and then apply vendor-specific
value in vops callback.

Bug: 151050916
Change-Id: Icae52601cebf3416ad48a3dcc1b6b5223dec50a1
(cherry picked from commit 47d054580a75b7d14d275a76146ce2f41bc16a81)
Link: https://lore.kernel.org/r/20200302135346.16797-1-stanley.chu@mediatek.com
Reviewed-by: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Stanley Chu 2020-03-02 21:53:46 +08:00 • committed by Greg Kroah-Hartman
commit 8880ad4916
1 changed files with 3 additions and 1 deletions
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4
drivers/scsi/ufs/ufs-mediatek.c
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@ -533,8 +533,10 @@ static int ufs_mtk_apply_dev_quirks(struct ufs_hba *hba)
struct ufs_dev_info *dev_info = &hba->dev_info;
u16 mid = dev_info->wmanufacturerid;
if (mid == UFS_VENDOR_SAMSUNG)
if (mid == UFS_VENDOR_SAMSUNG) {
hba->dev_quirks &= ~UFS_DEVICE_QUIRK_HOST_PA_TACTIVATE;
ufshcd_dme_set(hba, UIC_ARG_MIB(PA_TACTIVATE), 6);
}
/*
* Decide waiting time before gating reference clock and