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| author | Bean Huo <beanhuo@micron.com> | 2021-01-19 19:38:43 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2021-01-21 06:12:21 +0300 |
| commit | 06aea26676a584d0effa72ce6a21b21de7643b30 (patch) | |
| tree | 364e61756889bee1cf44e186890953496d826b18 /Documentation/ABI/testing/sysfs-driver-ufs | |
| parent | 8e834ca551add86fd549b0830f36ec2f26d08667 (diff) | |
| download | linux-06aea26676a584d0effa72ce6a21b21de7643b30.tar.xz | |
scsi: ufs: docs: ABI: Add wb_on documentation for new entry wb_on
Adds UFS sysfs documentation for new entry wb_on.
[mkp: fix doc formatting]
Link: https://lore.kernel.org/r/20210119163847.20165-3-huobean@gmail.com
Signed-off-by: Bean Huo <beanhuo@micron.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
fix format
Diffstat (limited to 'Documentation/ABI/testing/sysfs-driver-ufs')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-driver-ufs | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs index adc0d0e91607..375a10f159b1 100644 --- a/Documentation/ABI/testing/sysfs-driver-ufs +++ b/Documentation/ABI/testing/sysfs-driver-ufs @@ -1153,3 +1153,14 @@ Description: This entry shows the configured size of WriteBooster buffer. 0400h corresponds to 4GB. The file is read only. + +What: /sys/bus/platform/drivers/ufshcd/*/wb_on +Date: January 2021 +Contact: Bean Huo <beanhuo@micron.com> +Description: This node is used to set or display whether UFS WriteBooster is + enabled. Echo 0 to this file to disable UFS WriteBooster or 1 to + enable it. The WriteBooster is enabled after power-on/reset, + however, it will be disabled/enable while CLK scaling down/up + (if the platform supports UFSHCD_CAP_CLK_SCALING). For a + platform that doesn't support UFSHCD_CAP_CLK_SCALING, we can + disable/enable WriteBooster through this sysfs node. |