lkml.org 
[lkml]   [2018]   [Sep]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 1/2] dt-bindings: Documentation for qcom,eud
Date
Documentation for Embedded USB Debugger (EUD) device tree bindings.

Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Signed-off-by: Prakruthi Deepak Heragu <pheragu@codeaurora.org>
---
.../devicetree/bindings/soc/qcom/qcom,msm-eud.txt | 41 ++++++++++++++++++++++
1 file changed, 41 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..a03021a
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,msm-eud.txt
@@ -0,0 +1,41 @@
+* 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>;
+ };
+ };
+ };
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
\
 
 \ /
  Last update: 2018-09-04 23:36    [W:0.078 / U:14.040 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site