linux-kernel - [PATCH 0/8] Enable EUD on Qualcomm sm8450 SoC

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Message-Id: <20240730222439.3469-1-quic_eserrao@quicinc.com>
Date: Tue, 30 Jul 2024 15:24:31 -0700
From: Elson Roy Serrao <quic_eserrao@...cinc.com>
To: andersson@...nel.org, konrad.dybcio@...aro.org, robh@...nel.org,
        krzk+dt@...nel.org, conor+dt@...nel.org, gregkh@...uxfoundation.org
Cc: linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
        Elson Roy Serrao <quic_eserrao@...cinc.com>
Subject: [PATCH 0/8] Enable EUD on Qualcomm sm8450 SoC

The Embedded USB Debugger (EUD) is a mini High-Speed USB on-chip hub to
support the USB-based debug and trace capabilities on Qualcomm devices.
The current implementation lacks in below aspects that are needed for
proper EUD functionality.

1.) HS-Phy control: EUD being a HS hub needs HS-Phy support for it's
    operation. Hence EUD module should enable/disable HS-phy
    accordingly.
	
2.) Proper routing of USB role switch notifications: EUD hub is physically
    present in between the USB connector and the USB controller. So the
    usb role switch notifications originating from the connector should
    route through EUD. EUD also relies on role switch notifications to
    communicate with the USB, regarding EUD attach/detach events.

This series aims at implementing the above aspects to enable EUD on
Qualcomm sm8450 SoC.

Elson Roy Serrao (8):
  dt-bindings: soc: qcom: eud: Add phy related bindings
  dt-bindings: soc: qcom: eud: Add usb role switch property
  dt-bindings: soc: qcom: eud: Add compatible for sm8450
  arm64: dts: qcom: sm8450: Add EUD node
  arm64: dts: qcom: Enable EUD on sm8450 hdk
  usb: misc: eud: Add High-Speed Phy control for EUD operations
  usb: misc: eud: Handle usb role switch notifications
  usb: misc: eud: Add compatible for sm8450

 .../bindings/soc/qcom/qcom,eud.yaml           |  17 +++
 arch/arm64/boot/dts/qcom/sm8450-hdk.dts       |  15 ++-
 arch/arm64/boot/dts/qcom/sm8450.dtsi          |  29 ++++
 drivers/usb/misc/qcom_eud.c                   | 125 +++++++++++++++---
 4 files changed, 164 insertions(+), 22 deletions(-)

-- 
2.17.1