Re: [PATCH 0/8] Enable EUD on Qualcomm sm8450 SoC

Caleb Connolly
2024-07-31T11:13:51Z

Hi,

On 31/07/2024 00:24, Elson Roy Serrao wrote:
> 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.

Are there any plans to make this feature available for folks outside of
Qualcomm / an NDA?

There is an openOCD fork on CodeLinaro but it still requires some
proprietary library which is only available to folks with a quicinc
email as I understand it.

Kind regards,

~ someone eager for JTAG access
>
> 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(-)
>

--
// Caleb (they/them)