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Samuel Holland e5c02cf541 i2c: mv64xxx: Add runtime PM support
To save power, gate the clock when the bus is inactive, during system
sleep, and during shutdown. On some platforms, specifically Allwinner
A13/A20, gating the clock implicitly resets the module as well. Since
the module already needs to be reset after some suspend/resume cycles,
it is simple enough to reset it during every runtime suspend/resume.

Because the bus may be used by wakeup source IRQ threads, it needs to
be functional as soon as IRQs are enabled. Thus, its system PM hooks
need to run in the noirq phase.

Signed-off-by: Samuel Holland <samuel@sholland.org>
Tested-by: Ondrej Jirman <megous@megous.com>
Acked-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
2021-02-01 23:05:29 +01:00
arch Cleanup and warning fixes. 2021-01-24 13:52:02 -08:00
block
certs
crypto
Documentation Linux 5.11-rc5 2021-01-28 10:03:25 +01:00
drivers i2c: mv64xxx: Add runtime PM support 2021-02-01 23:05:29 +01:00
fs io_uring-5.11-2021-01-24 2021-01-24 12:30:14 -08:00
include i2c: mux: mlxcpld: Move header file out of x86 realm 2021-02-01 22:55:41 +01:00
init
ipc
kernel - Fix a kernel panic in mips-cpu due to invalid irq domain hierarchy. 2021-01-24 10:24:20 -08:00
lib ubsan: disable unsigned-overflow check for i386 2021-01-24 10:34:52 -08:00
LICENSES
mm mm/highmem: prepare for overriding set_pte_at() 2021-01-24 10:34:52 -08:00
net
samples
scripts
security
sound
tools - Adjust objtool to handle a recent binutils change to not generate unused 2021-01-24 10:17:03 -08:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
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COPYING
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MAINTAINERS Merge branch 'akpm' (patches from Andrew) 2021-01-24 12:16:34 -08:00
Makefile Linux 5.11-rc5 2021-01-24 16:47:14 -08:00
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.