linux-kernel - [PATCH v4 0/5] Add Qualcomm SM6115 / SM4250 EUD dt-bindings & driver support

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Date:   Fri,  5 May 2023 12:10:34 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-usb@...r.kernel.org
Cc:     agross@...nel.org, andersson@...nel.org, konrad.dybcio@...aro.org,
        linux-kernel@...r.kernel.org, bhupesh.linux@...il.com,
        bhupesh.sharma@...aro.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, krzysztof.kozlowski@...aro.org
Subject: [PATCH v4 0/5] Add Qualcomm SM6115 / SM4250 EUD dt-bindings & driver support

Changes since v3:
----------------
- v3 can be viewed here: https://www.spinics.net/lists/linux-arm-msm/msg137025.html 
- Addressed Konrad's review comments regarding mainly the driver code.
  Also fixed the .dtsi as per his comments.
- Also collected his R-B for [PATCH 1/5].

Changes since v2:
----------------
- v2 can be viewed here: https://www.spinics.net/lists/linux-arm-msm/msg137025.html 
- Addressed Bjorn and Krzysztof's comments.
- Added [PATCH 1/5] which fixes the 'qcom_eud' sysfs path. 
- Added [PATCH 5/5] to enable EUD for Qualcomm QRB4210-RB2 boards.

Changes since v1:
----------------
- v1 can be viewed here: https://lore.kernel.org/linux-arm-msm/20221231130743.3285664-1-bhupesh.sharma@linaro.org
- Added Krzysztof in Cc list.
- Fixed the following issue reported by kernel test bot:
  >> ERROR: modpost: "qcom_scm_io_writel" [drivers/usb/misc/qcom_eud.ko] undefined!

This series adds the dt-binding and driver support for SM6115 / SM4250
EUD (Embedded USB Debugger) block available on Qualcomm SoCs.

It also enables the same for QRB4210-RB2 boards by default (the user
still needs to enable the same via sysfs).

The EUD is a mini-USB hub implemented on chip to support the USB-based debug
and trace capabilities.

EUD driver listens to events like USB attach or detach and then
informs the USB about these events via ROLE-SWITCH.

Bhupesh Sharma (5):
  usb: misc: eud: Fix eud sysfs path (use 'qcom_eud')
  dt-bindings: soc: qcom: eud: Add SM6115 / SM4250 support
  usb: misc: eud: Add driver support for SM6115 / SM4250
  arm64: dts: qcom: sm6115: Add EUD dt node and dwc3 connector
  arm64: dts: qcom: qrb4210-rb2: Enable EUD debug peripheral

 Documentation/ABI/testing/sysfs-driver-eud    |  2 +-
 .../bindings/soc/qcom/qcom,eud.yaml           | 16 ++++
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts      | 27 ++++++-
 arch/arm64/boot/dts/qcom/sm6115.dtsi          | 51 +++++++++++++
 drivers/usb/misc/Kconfig                      |  1 +
 drivers/usb/misc/qcom_eud.c                   | 74 +++++++++++++++++--
 6 files changed, 162 insertions(+), 9 deletions(-)

-- 
2.38.1