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authorRichard Zhao <richard.zhao@freescale.com>2012-09-12 14:58:05 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-12 11:20:38 -0700
commitd142d6be231713330f9c0d7ee52f23e1b3f19ee4 (patch)
tree22c13437373301d2ff9c2b311c42eaab2d079a1e /Documentation/devicetree
parent08d9c74d45ceb581c11d2ab265c32236b0321a56 (diff)
downloadblackbird-op-linux-d142d6be231713330f9c0d7ee52f23e1b3f19ee4.tar.gz
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USB: chipidea: add imx usbmisc support
i.MX usb controllers share non-core registers, which may include SoC specific controls. We turn it into a usbmisc device and usbmisc driver set operations needed by ci13xxx_imx driver. For example, Sabrelite board has bad over-current design, we can usbmisc to disable over-current detection. Acked-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Richard Zhao <richard.zhao@freescale.com> Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/usb/ci13xxx-imx.txt5
-rw-r--r--Documentation/devicetree/bindings/usb/usbmisc-imx.txt14
2 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
index 2c290418bb2d..5778b9c83bd8 100644
--- a/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
+++ b/Documentation/devicetree/bindings/usb/ci13xxx-imx.txt
@@ -7,7 +7,10 @@ Required properties:
Optional properties:
- fsl,usbphy: phandler of usb phy that connects to the only one port
+- fsl,usbmisc: phandler of non-core register device, with one argument
+ that indicate usb controller index
- vbus-supply: regulator for vbus
+- disable-over-current: disable over current detect
Examples:
usb@02184000 { /* USB OTG */
@@ -15,4 +18,6 @@ usb@02184000 { /* USB OTG */
reg = <0x02184000 0x200>;
interrupts = <0 43 0x04>;
fsl,usbphy = <&usbphy1>;
+ fsl,usbmisc = <&usbmisc 0>;
+ disable-over-current;
};
diff --git a/Documentation/devicetree/bindings/usb/usbmisc-imx.txt b/Documentation/devicetree/bindings/usb/usbmisc-imx.txt
new file mode 100644
index 000000000000..97ce94e1a6cc
--- /dev/null
+++ b/Documentation/devicetree/bindings/usb/usbmisc-imx.txt
@@ -0,0 +1,14 @@
+* Freescale i.MX non-core registers
+
+Required properties:
+- #index-cells: Cells used to descibe usb controller index. Should be <1>
+- compatible: Should be one of below:
+ "fsl,imx6q-usbmisc" for imx6q
+- reg: Should contain registers location and length
+
+Examples:
+usbmisc@02184800 {
+ #index-cells = <1>;
+ compatible = "fsl,imx6q-usbmisc";
+ reg = <0x02184800 0x200>;
+};
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