X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=Documentation%2Fmmc%2Fmmc-dev-attrs.txt;h=22ae8441489fcef3fe8f21ff4322dc3a8b85e5e6;hb=c2bc3a316a7281f67e36b34dac2802cbe36a9128;hp=8898a95b41e5ee1b277cd64697870726b11bc2fa;hpb=56aa53391059e3730a304da4dd96b7b123b9fb75;p=firefly-linux-kernel-4.4.55.git

diff --git a/Documentation/mmc/mmc-dev-attrs.txt b/Documentation/mmc/mmc-dev-attrs.txt
index 8898a95b41e5..22ae8441489f 100644
--- a/Documentation/mmc/mmc-dev-attrs.txt
+++ b/Documentation/mmc/mmc-dev-attrs.txt
@@ -64,3 +64,13 @@ Note on Erase Size and Preferred Erase Size:
 	size specified by the card.
 
 	"preferred_erase_size" is in bytes.
+
+SD/MMC/SDIO Clock Gating Attribute
+==================================
+
+Read and write access is provided to following attribute.
+This attribute appears only if CONFIG_MMC_CLKGATE is enabled.
+
+	clkgate_delay	Tune the clock gating delay with desired value in milliseconds.
+
+echo <desired delay> > /sys/class/mmc_host/mmcX/clkgate_delay