Linux mainline fork with MSM8998 patches | https://mainline.space | Currently supported devices:
OnePlus 5/5T, Xiaomi Mi 6, F(x)tec Pro¹ (2019 QX1000 model) & Sony Xperia XZ Premium (UNTESTED!)
8f2ca252ee
Attempting to boot my Udoo Dual and Quad with mainline hangs during boot after printing: [ 3.270471] imx_usb 2184000.usb: No over current polarity defined [ 3.922502] mxs_phy 20c9000.usbphy: Data pin can't make good contact. [ 3.940097] imx_usb 2184200.usb: No over current polarity defined where imx_usb 2184200.usb is usbh1 in the DT. Adding debug prints to the code seems to show that we lock up at the first read in usbmisc_imx6q_init() which in combination with the above logging about the USB controllers suggests that we lock up on the first read in usbmisc_imx6q_init(). Looking at some of the other i.MX6 boards and the warning messages that are being printed suggests that there is bitrot in the DTS for the device so disable it for now, with it disabled the board boots successfully. Clearly this is not a real fix, but it does allow some use of the board with mainline. Similar behaviour is seen all the way back as far as v4.19, I tried going back to when the board was added but had toolchain issues. Vendor provided binaries seem fine on the boards so it seems likely that the hardware is fine and the issue is with some combination of the DT and kernel. This should obviously be resolved properly but for now this at least allows the kernel to boot with reduced functionality on these systems. Signed-off-by: Mark Brown <broonie@kernel.org> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org> |
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| arch | ||
| block | ||
| certs | ||
| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| 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 Restructured Text 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.