[PATCH v5 2/4] dt-bindings: usb: dwc3-imx8mp: Add imx8mp specific flags

[Alexander Stein]

This adds bindings for features in the USB glue block. They allow
setting polarity of PWR and OC as well as disabling port power control.
Also permanently attached can be annotated as well.
Additional IO address and clock are needed.

Signed-off-by: Alexander Stein <alexander.stein at ew.tq-group.com>
Reviewed-by: Rob Herring <robh at kernel.org>
---
Changes in v5:
* Added Reviewed-by: Rob Herring

 .../bindings/usb/fsl,imx8mp-dwc3.yaml         | 31 ++++++++++++++++---
 1 file changed, 27 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml b/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
index 974032b1fda0..01ab0f922ae8 100644
--- a/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
+++ b/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
@@ -15,9 +15,9 @@ properties:
     const: fsl,imx8mp-dwc3
 
   reg:
-    maxItems: 1
-    description: Address and length of the register set for the wrapper of
-      dwc3 core on the SOC.
+    items:
+      - description: Address and length of the register set for HSIO Block Control
+      - description: Address and length of the register set for the wrapper of dwc3 core on the SOC.
 
   "#address-cells":
     enum: [ 1, 2 ]
@@ -49,6 +49,28 @@ properties:
       - const: hsio
       - const: suspend
 
+  fsl,permanently-attached:
+    type: boolean
+    description:
+      Indicates if the device atached to a downstream port is
+      permanently attached.
+
+  fsl,disable-port-power-control:
+    type: boolean
+    description:
+      Indicates whether the host controller implementation includes port
+      power control. Defines Bit 3 in capability register (HCCPARAMS).
+
+  fsl,over-current-active-low:
+    type: boolean
+    description:
+      Over current signal polarity is active low.
+
+  fsl,power-active-low:
+    type: boolean
+    description:
+      Power pad (PWR) polarity is active low.
+
 # Required child node:
 
 patternProperties:
@@ -74,7 +96,8 @@ examples:
     #include <dt-bindings/interrupt-controller/arm-gic.h>
     usb3_0: usb at 32f10100 {
       compatible = "fsl,imx8mp-dwc3";
-      reg = <0x32f10100 0x8>;
+      reg = <0x32f10100 0x8>,
+            <0x381f0000 0x20>;
       clocks = <&clk IMX8MP_CLK_HSIO_ROOT>,
                <&clk IMX8MP_CLK_USB_ROOT>;
       clock-names = "hsio", "suspend";
-- 
2.25.1