Commit 06aea266 authored by Bean Huo's avatar Bean Huo Committed by Martin K. Petersen
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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: default avatarBean Huo <beanhuo@micron.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>

fix format
parent 8e834ca5

Documentation/ABI/testing/sysfs-driver-ufs

+11 −0
Original line number Diff line number Diff line
@@ -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.