devicetree: bindings: phy: Document ipq806x dwc3 qcom phy

Document dwc3 qcom phy hs and ss phy bindings needed to correctly
inizialize and use usb on ipq806x SoC.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200717131635.11076-2-ansuelsmth@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

1 files changed, 55 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
new file mode 100644
index 000000000000..23887ebe08fd
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,ipq806x-usb-phy-hs.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qcom,ipq806x-usb-phy-hs.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm ipq806x usb DWC3 HS PHY CONTROLLER
+
+maintainers:
+  - Ansuel Smith <ansuelsmth@gmail.com>
+
+description:
+  DWC3 PHY nodes are defined to describe on-chip Synopsis Physical layer
+  controllers used in ipq806x. Each DWC3 PHY controller should have its
+  own node.
+
+properties:
+  compatible:
+    const: qcom,ipq806x-usb-phy-hs
+
+  "#phy-cells":
+    const: 0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    minItems: 1
+    maxItems: 2
+    items:
+      - const: ref
+      - const: xo
+
+required:
+  - compatible
+  - "#phy-cells"
+  - reg
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+
+    hs_phy_0: phy@110f8800 {
+      compatible = "qcom,ipq806x-usb-phy-hs";
+      reg = <0x110f8800 0x30>;
+      clocks = <&gcc USB30_0_UTMI_CLK>;
+      clock-names = "ref";
+      #phy-cells = <0>;
+    };