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[v5,2/7] docs: ABI: Add wb_on documentation for UFS sysfs

Message ID 20201215230519.15158-3-huobean@gmail.com
State New
Headers show
Series Several changes for UFS WriteBooster | expand

Commit Message

Bean Huo Dec. 15, 2020, 11:05 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 d1a352194d2e..5a70d541b2f2 100644
--- a/Documentation/ABI/testing/sysfs-driver-ufs
+++ b/Documentation/ABI/testing/sysfs-driver-ufs
@@ -1019,3 +1019,11 @@  Contact:	Asutosh Das <asutoshd@codeaurora.org>
 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:		December 2020
+Contact:	Bean Huo <beanhuo@micron.com>
+Description:	This sets or displays whether UFS WriteBooster is enabled. Echo
+        0 into 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.