diff options
Diffstat (limited to 'drivers/ufs/core')
| -rw-r--r-- | drivers/ufs/core/ufshcd.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/ufs/core/ufshcd.c b/drivers/ufs/core/ufshcd.c index b92d4fb82bca..8f11f118c30e 100644 --- a/drivers/ufs/core/ufshcd.c +++ b/drivers/ufs/core/ufshcd.c @@ -8544,6 +8544,19 @@ out: return ret; } +static enum ufs_ref_clk_freq ufshcd_parse_ref_clk_property(struct ufs_hba *hba) +{ + u32 freq; + int ret = device_property_read_u32(hba->dev, "ref-clk-freq", &freq); + + if (ret) { + dev_dbg(hba->dev, "Cannnot query 'ref-clk-freq' property = %d", ret); + return REF_CLK_FREQ_INVAL; + } + + return ufs_get_bref_clk_from_hz(freq); +} + static int ufshcd_init_clocks(struct ufs_hba *hba) { int ret = 0; @@ -8637,6 +8650,9 @@ static int ufshcd_hba_init(struct ufs_hba *hba) if (err) goto out_disable_hba_vreg; + if (hba->dev_ref_clk_freq == REF_CLK_FREQ_INVAL) + hba->dev_ref_clk_freq = ufshcd_parse_ref_clk_property(hba); + err = ufshcd_setup_clocks(hba, true); if (err) goto out_disable_hba_vreg; |