On Thu, Nov 15, 2018 at 11:32:53AM -0800, Prakruthi Deepak Heragu wrote:
> Documentation for Embedded USB Debugger (EUD) device tree bindings.
I asked questions on v2 which were never answered.
>
> Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@xxxxxxxxxxxxxx>
> Signed-off-by: Prakruthi Deepak Heragu <pheragu@xxxxxxxxxxxxxx>
> ---
> .../devicetree/bindings/soc/qcom/qcom,msm-eud.txt | 43 ++++++++++++++++++++++
> 1 file changed, 43 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt
>
> diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt
> new file mode 100644
> index 0000000..6d339e7
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt
> @@ -0,0 +1,43 @@
> +* 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
> +
> +EUD notifies clients for VBUS attach/detach and charger enable/disable
> +events. The link between client and EUD is established via a directed
> +graph. EUD has one endpoint of the graph link mentioning EUD as an
> +output link and clients of EUD should have the other endpoint of the
> +graph link as an input link.
> +
> +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>;
> + usb_con: connector {
> + compatible = "usb-c-connector";
> + label = "USB-C";
> + port {
> + eud_usb_output: endpoint {
> + remote-endpoint = <&eud_usb3_input>;
> + };
> + };
> + };
> + };
> +
> +An example for EUD client:
> +
> + usb3 {
> + port {
> + eud_usb3_input: endpoint {
> + remote-endpoint = <&eud_usb_output>;
> + };
> + };
> + };
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
