Documentation for Embedded USB Debugger (EUD) device tree bindings.
Signed-off-by: Satya Durga Srinivasu Prabhala <sat...@codeaurora.org>
Signed-off-by: Prakruthi Deepak Heragu <pher...@codeaurora.org>
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.../devicetree/bindings/soc/qcom/qcom,msm-eud.txt | 41 ++++++++++++++++++++++
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+* Qualcomm Technologies Inc Embedded USB Debugger (EUD)
+
+The EUD (Embedded USB Debugger) is a mini-USB hub implemented
+on chip to support the USB-based debug and trace capabilities.
+
+Required properties:
+
+ - compatible: Should be "qcom,msm-eud"
+ - interrupts: Interrupt number
+ - reg: Should be address and size of EUD register space
+
+Driver notifies clients for VBUS attach/detach and charger enable/disable
+events. The link between client and EUD is established via a directed
+graph. EUD driver has one endpoint of the graph link mentioning EUD as an
+output link and clients registered for these notifications from the EUD
+should have the other endpoint of the graph link as an input link. Each of
+these endpoints should contain a 'remote-endpoint' phandle property that
+points to the corresponding endpoint in the port of the remote device.
+
+An example for EUD device node:
+
+ eud: qcom,msm-eud@88e0000 {
+ compatible = "qcom,msm-eud";
+ interrupts = <GIC_SPI 492 IRQ_TYPE_LEVEL_HIGH>;
+ reg = <0x88e0000 0x4000>;
+ port {
+ eud_output: endpoint {
+ remote-endpoint = <&usb3_input>;
+ };
+ };
+ };
+
+An example for EUD client:
+
+ usb3 {
+ port {
+ usb3_input: endpoint {
+ remote-endpoint = <&eud_output>;
+ };
+ };
+ };
--
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