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27b3bcbf8a
Add suspend/resume support for Layerscape LS1043a. In the suspend path, PME_Turn_Off message is sent to the endpoint to transition the link to L2/L3_Ready state. In this SoC, there is no way to check if the controller has received the PME_To_Ack from the endpoint or not. So to be on the safer side, the driver just waits for PCIE_PME_TO_L2_TIMEOUT_US before asserting the SoC specific PMXMTTURNOFF bit to complete the PME_Turn_Off handshake. Then the link would enter L2/L3 state depending on the VAUX supply. In the resume path, the link is brought back from L2 to L0 by doing a software reset. Link: https://lore.kernel.org/r/20231204160829.2498703-5-Frank.Li@nxp.com Signed-off-by: Frank Li <Frank.Li@nxp.com> Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Acked-by: Roy Zang <Roy.Zang@nxp.com> |
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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 | ||
| .cocciconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
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| 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.