From: Prakruthi Deepak Heragu <pheragu@codeaurora.org>
To: linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org,
devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org, ckadabi@codeaurora.org,
tsoni@codeaurora.org, bryanh@codeaurora.org,
psodagud@codeaurora.org, rnayak@codeaurora.org,
Prakruthi Deepak Heragu <pheragu@codeaurora.org>,
Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Subject: [PATCH v3 1/2] dt-bindings: Documentation for qcom,eud
Date: Thu, 15 Nov 2018 11:32:53 -0800 [thread overview]
Message-ID: <1542310374-18474-2-git-send-email-pheragu@codeaurora.org> (raw)
In-Reply-To: <1542310374-18474-1-git-send-email-pheragu@codeaurora.org>
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 | 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
next prev parent reply other threads:[~2018-11-15 19:33 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-15 19:32 [PATCH v3 0/2] Add Embedded USB Debugger (EUD) driver Prakruthi Deepak Heragu
2018-11-15 19:32 ` Prakruthi Deepak Heragu [this message]
2018-11-17 14:47 ` [PATCH v3 1/2] dt-bindings: Documentation for qcom,eud Rob Herring
2020-01-09 14:58 ` Dwivedi, Avaneesh Kumar (avani)
2018-11-15 19:32 ` [PATCH v3 2/2] Embedded USB Debugger (EUD) driver Prakruthi Deepak Heragu
2018-11-15 23:06 ` Greg KH
2020-01-23 21:41 ` Dwivedi, Avaneesh Kumar (avani)
2020-01-24 5:57 ` Greg KH
2018-11-15 23:09 ` Greg KH
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