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Enable the first USB controller in device mode on the Lemans EVK board and configure the associated LDO regulators to power the PHYs accordingly. The USB port is a Type-C port controlled by HD3SS3320 port controller. The role switch notifications would need to be routed to glue driver by adding an appropriate usb-c-connector node in DT. However in the design, the vbus supply that is to be provided to connected peripherals when port is configured as an DFP, is controlled by a GPIO. There is also one ID line going from Port controller chip to GPIO-50 of the SoC. As per the datasheet of HD3SS3320: "Upon detecting a UFP device, HD3SS3220 will keep ID pin high if VBUS is not at VSafe0V. Once VBUS is at VSafe0V, the HD3SS3220 will assert ID pin low. This is done to enforce Type-C requirement that VBUS must be at VSafe0V before re-enabling VBUS." The current HD3SS3220 driver doesn't have this functionality present. So, putting the first USB controller in device mode for now. Once the vbus control based on ID pin is implemented in hd3ss3220.c, the usb-c-connector will be implemented and dr mode would be made OTG. Signed-off-by: Krishna Kurapati <krishna.kurapati@oss.qualcomm.com> Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com> Signed-off-by: Wasim Nazir <wasim.nazir@oss.qualcomm.com> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com> Link: https://lore.kernel.org/r/20250916-lemans-evk-bu-v5-8-53d7d206669d@oss.qualcomm.com Signed-off-by: Bjorn Andersson <andersson@kernel.org> |
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| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .pylintrc | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.