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.
Forked from
Linaro / linux / kernel / torvalds / linux
Guido Günther
authored
BUCK3 needs a regulator-enable-ramp-delay since otherwise the board freezes on etnaviv probe. With this pgc_gpu suspends and resumes as expected. This must have been always broken since gpcv2 support was enabled. We also enable all the regulators needed for Deep Sleep Mode (DSM) as always-on: - VDD_SOC supplied by BUCK1 - VDDA_1P8 supplied by BUCK7 - VDDA_0P9 supplied by LDO4 - VDDA_DRAM supplied by LDO3 - NVCC_DRAM supplied by BUCK8 - VDD_DRAM supplied by BUCK5 Finally LDO5 and LDO6 provide VDD_PHY_1V8 and VDD_PHY_0V9 used by the SOCs MIPI, HDMI and USB IP cores. While we would in theory be able to turn these off (and I've tested that or LDO6 and mipi with USB disabled) it is of little practical use atm since USB doesn't runtime suspend so let's revisit this at a later point. Signed-off-by:Guido Günther <agx@sigxcpu.org> Reviewed-by:
Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by:
Shawn Guo <shawnguo@kernel.org>
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