diff options
| author | Subhash Jadavani <subhashj@codeaurora.org> | 2018-10-16 11:59:41 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-11-09 15:52:59 +0300 |
| commit | 9e1e8a75708031937a0f92567c19760c92658410 (patch) | |
| tree | 31e130823c44c8091cb8258d3d88f64abb1154f9 /drivers/scsi/ufs/ufshcd.h | |
| parent | 371a6c328ad423c51ffcf68ec211d3eeb80f1874 (diff) | |
| download | linux-9e1e8a75708031937a0f92567c19760c92658410.tar.xz | |
scsi: ufs: set the device reference clock setting
UFS host supplies the reference clock to UFS device and UFS device
specification allows host to provide one of the 4 frequencies (19.2 MHz, 26
MHz, 38.4 MHz, 52 MHz) for reference clock. Host should set the device
reference clock frequency setting in the device based on what frequency it
is supplying to UFS device.
Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: Can Guo <cang@codeaurora.org>
Signed-off-by: Sayali Lokhande <sayalil@codeaurora.org>
Reviewed-by: Evan Green <evgreen@chromium.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ufs/ufshcd.h')
| -rw-r--r-- | drivers/scsi/ufs/ufshcd.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/scsi/ufs/ufshcd.h b/drivers/scsi/ufs/ufshcd.h index 1a1c2b487a4e..69ba7445d2b3 100644 --- a/drivers/scsi/ufs/ufshcd.h +++ b/drivers/scsi/ufs/ufshcd.h @@ -550,6 +550,7 @@ struct ufs_hba { void *priv; unsigned int irq; bool is_irq_enabled; + enum ufs_ref_clk_freq dev_ref_clk_freq; /* Interrupt aggregation support is broken */ #define UFSHCD_QUIRK_BROKEN_INTR_AGGR 0x1 @@ -768,6 +769,7 @@ void ufshcd_remove(struct ufs_hba *); int ufshcd_wait_for_register(struct ufs_hba *hba, u32 reg, u32 mask, u32 val, unsigned long interval_us, unsigned long timeout_ms, bool can_sleep); +void ufshcd_parse_dev_ref_clk_freq(struct ufs_hba *hba, struct clk *refclk); static inline void check_upiu_size(void) { |