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. Changes in V4 * Aligned the device tree node structure of EUD as per discussion. * Changes to usb-connector.yaml is no longer required and is not included in the patch series. * Implemented the rest of the comments on Version 3 of the patch. Changes in V3 * Removed the patch for registration of EUD connector as it is no longer required. * Added the description to include EUD in usb-connector.yaml * Implemented comments on V2 of the patch. Changes in V2 * Fixed the yaml issue and also implemented comments on yaml in V1. Changes in V1 * EUD has now been mapped as a separate DT node as it is an independent QCOM IP. * EUD is attached to the connector child of dwc3 via port end point since EUD driver needs the connector for role-switching. * EUD driver has been moved now to drivers/soc/qcom/qcom_eud.c. * All the comments from version 0 of the patch has been implemented. Souradeep Chowdhury (6): dt-bindings: Add the yaml bindings for EUD bindings: usb: dwc3: Update dwc3 properties for EUD connector soc: qcom: eud: Add driver support for Embedded USB Debugger(EUD) arm64: dts: qcom: sc7280: Add EUD dt node and dwc3 connector arm64: dts: qcom: sc7280: Set the default dr_mode for usb2 MAINTAINERS: Add maintainer entry for EUD Documentation/ABI/testing/sysfs-driver-eud | 9 + .../devicetree/bindings/soc/qcom/qcom,eud.yaml | 77 +++++++ .../devicetree/bindings/usb/snps,dwc3.yaml | 10 + MAINTAINERS | 8 + arch/arm64/boot/dts/qcom/sc7280-idp.dts | 4 + arch/arm64/boot/dts/qcom/sc7280.dtsi | 39 ++++ drivers/soc/qcom/Kconfig | 10 + drivers/soc/qcom/Makefile | 1 + drivers/soc/qcom/qcom_eud.c | 250 +++++++++++++++++++++ 9 files changed, 408 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-driver-eud create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,eud.yaml create mode 100644 drivers/soc/qcom/qcom_eud.c -- 2.7.4
