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author | Peter Wang <peter.wang@mediatek.com> | 2022-08-04 10:54:22 +0800 |
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committer | Martin K. Petersen <martin.petersen@oracle.com> | 2022-08-22 23:07:50 -0400 |
commit | 87bd05016a64864d27a640ca24ef63c760b67d73 (patch) | |
tree | 0181174beaa556c5cd59108381fd3d9c1b1000fc /drivers/ufs/host/ufs-qcom.c | |
parent | 0f85e74756b5e85a0de6dce7d8c07f0b4e1f7726 (diff) | |
download | linux-87bd05016a64864d27a640ca24ef63c760b67d73.tar.gz |
scsi: ufs: core: Allow host driver to disable wb toggling during clock scaling
Mediatek UFS does not want to toggle write booster during clock scaling. Permit host driver to disable wb toggling during clock scaling. Introduce a flag UFSHCD_CAP_WB_WITH_CLK_SCALING to decouple WB and clock scaling. UFSHCD_CAP_WB_WITH_CLK_SCALING is only valid when UFSHCD_CAP_CLK_SCALING is set. Just like UFSHCD_CAP_HIBERN8_WITH_CLK_GATING is valid only when UFSHCD_CAP_CLK_GATING set. Set UFSHCD_CAP_WB_WITH_CLK_SCALING for qcom to compatible legacy design at the same time. Link: https://lore.kernel.org/r/20220804025422.18803-1-peter.wang@mediatek.com Reviewed-by: Stanley Chu <stanley.chu@mediatek.com> Signed-off-by: Peter Wang <peter.wang@mediatek.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/ufs/host/ufs-qcom.c')
-rw-r--r-- | drivers/ufs/host/ufs-qcom.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 473fad83701e..8ad1415e10b6 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -846,7 +846,7 @@ static void ufs_qcom_set_caps(struct ufs_hba *hba) struct ufs_qcom_host *host = ufshcd_get_variant(hba); hba->caps |= UFSHCD_CAP_CLK_GATING | UFSHCD_CAP_HIBERN8_WITH_CLK_GATING; - hba->caps |= UFSHCD_CAP_CLK_SCALING; + hba->caps |= UFSHCD_CAP_CLK_SCALING | UFSHCD_CAP_WB_WITH_CLK_SCALING; hba->caps |= UFSHCD_CAP_AUTO_BKOPS_SUSPEND; hba->caps |= UFSHCD_CAP_WB_EN; hba->caps |= UFSHCD_CAP_CRYPTO; |