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[v2,2/6] doc: dt-binding: ci-hdrc-usb2: add i.mx specific binding "need-three-clocks"

Message ID 1442380849-8500-3-git-send-email-peter.chen@freescale.com
State New, archived
Headers show

Commit Message

Peter Chen Sept. 16, 2015, 5:20 a.m. UTC
Some SoCs needs three clock to let controller work, but others only
need one, add one property to differentiate this.

Signed-off-by: Peter Chen <peter.chen@freescale.com>
---
 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 3 +++
 1 file changed, 3 insertions(+)
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Patch

diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
index f15a317..f405452 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
@@ -54,6 +54,9 @@  i.mx specific properties
   argument that indicate usb controller index
 - disable-over-current: disable over current detect
 - external-vbus-divider: enables off-chip resistor divider for Vbus
+- need-three-clocks: the SoC before imx6 series (except for imx23/imx28)
+  needs three clcoks for controller, others only need one. Without this
+  property, the driver will consider the controller only needs one clock.
 
 Example: