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[v2,2/7] doc: usb: ci-hdrc-usb2: Add pinctrl properties definition

Message ID 1535362415-16559-2-git-send-email-loic.poulain@linaro.org
State New
Headers show
Series [v2,1/7] usb: chipidea: Add dynamic pinctrl selection | expand

Commit Message

Loic Poulain Aug. 27, 2018, 9:33 a.m. UTC
Some hardware implementations require to configure pins differently
according to the USB role (host/device), this can be an update of the
pins routing or a simple GPIO value change.

This patch introduces new optional "host" and "device" pinctrls.
If these pinctrls are defined by the device, they are respectively
selected on host/device role start.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>

 v2: Add new pin modes documentation (host, device)

 Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt | 2 ++
 1 file changed, 2 insertions(+)

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diff --git a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
index 0e03344..ea7033c 100644
--- a/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
+++ b/Documentation/devicetree/bindings/usb/ci-hdrc-usb2.txt
@@ -76,6 +76,8 @@  Optional properties:
   needs to make sure it does not send more than 90%
   maximum_periodic_data_per_frame. The use case is multiple transactions, but
   less frame rate.
+- pinctrl-names: Names for optional pin modes in "default", "host", "device"
+- pinctrl-n: alternate pin modes
 i.mx specific properties
 - fsl,usbmisc: phandler of non-core register device, with one