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Certain GDSCs, such as the GPU_GX on MSM8996, requires that the upstream regulator supply is powered in order to be turned on. It's not guaranteed that the bootloader will leave these supplies on and the driver core will attempt to enable any GDSCs before allowing the individual drivers to probe defer on the PMIC regulator driver not yet being present. So the gdsc driver needs to be made aware of supplying regulators and probe defer on their absence, and it needs to enable and disable the regulator accordingly. Voltage adjustments of the supplying regulator are deferred to the client drivers themselves. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lkml.kernel.org/r/20200417070044.1376212-2-bjorn.andersson@linaro.org Reviewed-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org> |
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| 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.