linux-kernel - [PATCH V0 0/7] Add Embedded USB Debugger (EUD) driver

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Date:   Mon,  4 Oct 2021 16:46:18 +0530
From:   Souradeep Chowdhury <schowdhu@...eaurora.org>
To:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bryan O'Donoghue <pure.logic@...us-software.ie>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Greg KH <greg@...ah.com>
Cc:     linux-kernel@...r.kernel.org, ckadabi@...eaurora.org,
        tsoni@...eaurora.org, bryanh@...eaurora.org,
        psodagud@...eaurora.org, satyap@...eaurora.org,
        pheragu@...eaurora.org, Rajendra Nayak <rnayak@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>,
        Souradeep Chowdhury <schowdhu@...eaurora.org>
Subject: [PATCH V0 0/7] Add Embedded USB Debugger (EUD) driver

This is a series of patches that implements a driver for the control
peripheral, EUD (Embedded USB Debugger). The EUD is a mini-USB hub
implemented on chip to support the USB-based debug and trace capabilities.
Apart from debug capabilities, EUD has a control peripheral. Control
Peripheral is on when EUD is on and gets signals like USB attach, pet
EUD etc.EUD driver listens to events like USB attach or detach and then
informs the USB about these events via ROLE-SWITCH. At regular intervals,
the EUD driver receives an interrupt to pet the driver indicating that
the software is functional.

Souradeep Chowdhury (7):
  dt-bindings: connector: Add property for eud type c connector
  dt-bindings: usb: dwc3: Update dwc3 properties for EUD connector
  usb: dwc3: drd: Register the eud connector child node for dwc3
  usb: common: eud:Added the driver support for Embedded USB
    Debugger(EUD)
  arm64: dts: qcom: sc7280: Add EUD connector node
  arm64: dts: qcom: sc7280: Set the default dr_mode for usb2
  MAINTAINERS: Add maintainer entry for EUD

 Documentation/ABI/testing/sysfs-driver-eud         |   7 +
 .../bindings/connector/usb-connector.yaml          |  15 ++
 .../devicetree/bindings/usb/snps,dwc3.yaml         |  15 ++
 MAINTAINERS                                        |   7 +
 arch/arm64/boot/dts/qcom/sc7280-idp.dts            |   4 +
 arch/arm64/boot/dts/qcom/sc7280.dtsi               |  12 +
 drivers/usb/common/Kconfig                         |   9 +
 drivers/usb/common/Makefile                        |   1 +
 drivers/usb/common/qcom_eud.c                      | 256 +++++++++++++++++++++
 drivers/usb/dwc3/drd.c                             |  25 ++
 10 files changed, 351 insertions(+)
 create mode 100644 Documentation/ABI/testing/sysfs-driver-eud
 create mode 100644 drivers/usb/common/qcom_eud.c

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