diff options
| author | Can Guo <quic_cang@quicinc.com> | 2025-02-13 11:00:07 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2025-02-21 06:04:54 +0300 |
| commit | 2a25cbaa81d27f212439576fb5d406466055cfd0 (patch) | |
| tree | 9d45c62e432395004637e414a4051b173f84ac15 /include | |
| parent | eff26ad4c34fc78303c14be749e10ca61c4d211f (diff) | |
| download | linux-2a25cbaa81d27f212439576fb5d406466055cfd0.tar.xz | |
scsi: ufs: core: Toggle Write Booster during clock scaling base on gear speed
During clock scaling, Write Booster is toggled on or off based on whether
the clock is scaled up or down. However, with OPP V2 powered multi-level
gear scaling, the gear can be scaled amongst multiple gear speeds, e.g., it
may scale down from G5 to G4, or from G4 to G2. To provide flexibilities,
add a new field for clock scaling such that during clock scaling Write
Booster can be enabled or disabled based on gear speeds but not based on
scaling up or down.
Signed-off-by: Can Guo <quic_cang@quicinc.com>
Co-developed-by: Ziqi Chen <quic_ziqichen@quicinc.com>
Signed-off-by: Ziqi Chen <quic_ziqichen@quicinc.com>
Link: https://lore.kernel.org/r/20250213080008.2984807-8-quic_ziqichen@quicinc.com
Reviewed-by: Bean Huo <beanhuo@micron.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Peter Wang <peter.wang@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/ufs/ufshcd.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/ufs/ufshcd.h b/include/ufs/ufshcd.h index 199c2cec29d0..1b9f72ea4c1c 100644 --- a/include/ufs/ufshcd.h +++ b/include/ufs/ufshcd.h @@ -450,6 +450,8 @@ struct ufs_clk_gating { * one keeps track of previous power mode. * @target_freq: frequency requested by devfreq framework * @min_gear: lowest HS gear to scale down to + * @wb_gear: enable Write Booster when HS gear scales above or equal to it, else + * disable Write Booster * @is_enabled: tracks if scaling is currently enabled or not, controlled by * clkscale_enable sysfs node * @is_allowed: tracks if scaling is currently allowed or not, used to block @@ -473,6 +475,7 @@ struct ufs_clk_scaling { struct ufs_pa_layer_attr saved_pwr_info; unsigned long target_freq; u32 min_gear; + u32 wb_gear; bool is_enabled; bool is_allowed; bool is_initialized; |