diff mbox series

[v6,2/6] docs: ABI: Add wb_on documentation for UFS sysfs

Message ID 20210118201039.2398-3-huobean@gmail.com (mailing list archive)
State Superseded
Headers show
Series Several changes for UFS WriteBooster | expand

Commit Message

Bean Huo Jan. 18, 2021, 8:10 p.m. UTC 
From: Bean Huo <beanhuo@micron.com>

Adds UFS sysfs documentation for new entry wb_on.

Signed-off-by: Bean Huo <beanhuo@micron.com>
---
 Documentation/ABI/testing/sysfs-driver-ufs | 8 ++++++++
 1 file changed, 8 insertions(+)
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Patch

diff --git a/Documentation/ABI/testing/sysfs-driver-ufs b/Documentation/ABI/testing/sysfs-driver-ufs
index adc0d0e91607..f0a1ac385c7f 100644
--- a/Documentation/ABI/testing/sysfs-driver-ufs
+++ b/Documentation/ABI/testing/sysfs-driver-ufs
@@ -1153,3 +1153,11 @@  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. Note, this is only allowed for the platform doesen't support
+        UFSHCD_CAP_CLK_SCALING.