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421255afa2
When add workaround for ERR051725, the usbmisc will put PHY to
Non-driving mode (OPMODE = 01) after stopping the device controller
and put PHY back to Normal mode (OPMODE = 00) after starting the device
controller.
However, this will bring issue for host controller. Because the PHY may
stay in Non-driving mode after switching the role from device to host.
Then the port will not work if USB device is attached. To fix this issue,
improving the workaround by putting PHY to Non-driving mode for a certain
period and back to Normal mode finally. To make host detect a disconnect
signal, the period should be at least 125us (a micro-frame time) for
high-speed link.
And only working as high-speed mode will need workaround for ERR051725.
So this will also filter the pullup event for high-speed.
Fixes:
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|---|---|---|
| arch | ||
| 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.