* [2/5] dt-bindings: usb: ci-hdrc-usb2: add property power-active-high
@ 2019-02-27 6:51 Peter Chen
0 siblings, 0 replies; only message in thread
From: Peter Chen @ 2019-02-27 6:51 UTC (permalink / raw)
To: gregkh@linuxfoundation.org
Cc: linux-usb@vger.kernel.org, Philipp Puschmann, Peter Chen
From: Philipp Puschmann <philipp.puschmann@emlix.com>
The i.MX USB controller may drive the usb power line directly, but the
polarity depends on the board. Reset state of the polarity is low-active so
add this property to allow it to be high-active.
Signed-off-by: Philipp Puschmann <philipp.puschmann@emlix.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
---
Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 1 +
1 file changed, 1 insertion(+)
diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
index adae82385dd6..a254386a91ad 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
@@ -93,6 +93,7 @@ i.mx specific properties
- over-current-active-low: over current signal polarity is active low.
- over-current-active-high: over current signal polarity is active high.
It's recommended to specify the over current polarity.
+- power-active-high: power signal polarity is active high
- external-vbus-divider: enables off-chip resistor divider for Vbus
Example:
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