diff options
| -rw-r--r-- | drivers/ufs/ufs.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/ufs/ufs.c b/drivers/ufs/ufs.c index 565a6af1404..5d4e5424358 100644 --- a/drivers/ufs/ufs.c +++ b/drivers/ufs/ufs.c @@ -433,6 +433,12 @@ static int ufshcd_make_hba_operational(struct ufs_hba *hba) REG_UTP_TASK_REQ_LIST_BASE_H); /* + * Make sure base address and interrupt setup are updated before + * enabling the run/stop registers below. + */ + wmb(); + + /* * UCRDY, UTMRLDY and UTRLRDY bits must be 1 */ reg = ufshcd_readl(hba, REG_CONTROLLER_STATUS); @@ -861,6 +867,9 @@ static int ufshcd_send_command(struct ufs_hba *hba, unsigned int task_tag) ufshcd_writel(hba, 1 << task_tag, REG_UTP_TRANSFER_REQ_DOOR_BELL); + /* Make sure doorbell reg is updated before reading interrupt status */ + wmb(); + start = get_timer(0); do { intr_status = ufshcd_readl(hba, REG_INTERRUPT_STATUS); @@ -1994,6 +2003,8 @@ int ufshcd_probe(struct udevice *ufs_dev, struct ufs_hba_ops *hba_ops) REG_INTERRUPT_STATUS); ufshcd_writel(hba, 0, REG_INTERRUPT_ENABLE); + mb(); + err = ufshcd_hba_enable(hba); if (err) { dev_err(hba->dev, "Host controller enable failed\n"); |