Thank you very much Bryan for your review comments, will be working on
your and other maintainers comment on this patchset and will be posting
new patchset soon.
On 2/4/2020 8:21 AM, Bryan O'Donoghue wrote:
On 31/01/2020 04:43, Avaneesh Kumar Dwivedi wrote:
Documentation for Embedded USB Debugger (EUD) device tree bindings.
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@xxxxxxxxxxxxxx>
Signed-off-by: Prakruthi Deepak Heragu <pheragu@xxxxxxxxxxxxxx>
Signed-off-by: Avaneesh Kumar Dwivedi <akdwived@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..57476ce
--- /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.
on chip to support USB-based debug and trace capabilities.
OK
+
+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 event consumer(i.e.USB controller for vbus
missing space
consumer (i.e.
Ok
+attach/detach event) and EUD is established via a directed graph. EUD
+act
The EUD acts
OK
as an output link and clients of EUD as input link of this directed
+graph. Events flows through the directed graph only during debug mode.
Probably this is a very obvious question but, you mean debug and trace
events or do you mean VBUS/charger events?
Directed graph is to show VBUS and charger events flow.
+
+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>;
+ };
+ };
+ };
--
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a Linux Foundation Collaborative Project.
