This patch adds support for the global clock controller found on
the ipq6018 based devices.
Also fixed the sparse warnings reported by,
Reported-by: kbuild test robot <lkp@intel.com>
Co-developed-by: Anusha Canchi Ramachandra Rao <anusharao@codeaurora.org>
Signed-off-by: Anusha Canchi Ramachandra Rao <anusharao@codeaurora.org>
Co-developed-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Co-developed-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Signed-off-by: Sivaprakash Murugesan <sivaprak@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Link: https://lkml.kernel.org/r/1578557121-423-3-git-send-email-sricharan@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the video clock controller found on SC7180
based devices. This would allow video drivers to probe
and control their clocks.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lkml.kernel.org/r/1577428714-17766-7-git-send-email-tdas@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the graphics clock controller found on SC7180
based devices. This would allow graphics drivers to probe and
control their clocks.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lkml.kernel.org/r/1577428714-17766-4-git-send-email-tdas@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the display clock controller found on SC7180
based devices. This would allow display drivers to probe and
control their clocks.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lkml.kernel.org/r/1573812245-23827-4-git-send-email-tdas@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add a driver for the multimedia clock controller found on MSM8998
based devices. This should allow most multimedia device drivers
to probe and control their clocks.
Signed-off-by: Jeffrey Hugo <jhugo@codeaurora.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lkml.kernel.org/r/1576596033-10189-1-git-send-email-jhugo@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the global clock controller found on SC7180
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Link: https://lkml.kernel.org/r/20191014102308.27441-6-tdas@codeaurora.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the Q6SSTOP clock control used on qcs404
based devices. This would allow wcss remoteproc driver to
control the required WCSS Q6SSTOP clock/reset controls to
bring the subsystem out of reset and shutdown the WCSS Q6DSP.
Signed-off-by: Govind Singh <govinds@codeaurora.org>
Link: https://lkml.kernel.org/r/20191011132928.9388-3-govinds@codeaurora.org
[sboyd@kernel.org: Sort makefile]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the clocks supported in global clock controller which clock the
peripherals like BLSPs, SDCC, USB, MDSS etc. Register all the clocks
to the clock framework for the clients to be able to request for them.
Signed-off-by: Deepak Katragadda <dkatraga@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>
[vkoul: port to upstream and tidy-up
port to new parent scheme
Add comments for critical clocks]]
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lkml.kernel.org/r/20190722074348.29582-6-vkoul@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The Turing Clock Controller provides resources related to running the
Turing subsystem.
PM runtime is used to ensure that the associated AHB clock is ticking
while the clock framework is accessing the registers in the Turing clock
controller.
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the lpass clock controller found on SDM845 based devices.
This would allow lpass peripheral loader drivers to control the clocks to
bring the subsystem out of reset.
LPASS clocks present on the global clock controller would be registered
with the clock framework based on the protected-clock flag. Also do not
gate these clocks if they are left unused, as the lpass clocks require
the global clock controller lpass clocks to be enabled before they are
accessed. Mark the GCC lpass clocks as CRITICAL, for the LPASS clock
access.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the graphics clock controller found on SDM845
based devices. This would allow graphics drivers to probe and
control their clocks.
Signed-off-by: Amit Nischal <anischal@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>
[sboyd@kernel.org: Collapse return in probe into less lines]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The Krait CPU clocks are made up of a primary mux and secondary
mux for each CPU and the L2, controlled via cp15 accessors. For
Kraits within KPSSv1 each secondary mux accepts a different aux
source, but on KPSSv2 each secondary mux accepts the same aux
source.
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Craig Tatlor <ctatlor97@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The ACC and GCC regions present in KPSSv1 contain registers to
control clocks and power to each Krait CPU and L2. For CPUfreq
purposes probe these devices and expose a mux clock that chooses
between PXO and PLL8.
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Craig Tatlor <ctatlor97@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The Krait clocks are made up of a series of muxes and a divider
that choose between a fixed rate clock and dedicated HFPLLs for
each CPU. Instead of using mmio accesses to remux parents, the
Krait implementation exposes the remux control via cp15
registers. Support these clocks.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Craig Tatlor <ctatlor97@gmail.com>
[sboyd@kernel.org: Move hidden config to top outside of the visible qcom
config zone so that menuconfig looks nice]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
On some devices (MSM8974 for example), the HFPLLs are
instantiated within the Krait processor subsystem as separate
register regions. Add a driver for these PLLs so that we can
provide HFPLL clocks for use by the system.
Cc: <devicetree@vger.kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Craig Tatlor <ctatlor97@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
HFPLLs are the main frequency source for Krait CPU clocks. Add
support for changing the rate of these PLLs.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Tested-by: Craig Tatlor <ctatlor97@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the clocks supported in global clock controller which clock the
peripherals like BLSPs, SDCC, USB, MDSS etc. Register all the clocks
to the clock framework for the clients to be able to request for them.
Signed-off-by: Shefali Jain <shefjain@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Co-developed-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Anu Ramanathan <anur@codeaurora.org>
[bamse, vkoul: rebase and tidyup for upstream]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@kernel.org: Lowercase hex]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the global clock controller found on SDM660
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.
Based on CAF implementation.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
[craig: rename parents to fit upstream, and other cleanups]
Signed-off-by: Craig Tatlor <ctatlor97@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@kernel.org: Rename gcc_660 to gcc_sdm660 and fix numbering of
defines to avoid duplicates]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the camera clock controller found on SDM845
based devices. This would allow camera drivers to probe and
control their clocks.
Signed-off-by: Amit Nischal <anischal@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the display clock controller found on SDM845
based devices. This would allow display drivers to probe and
control their clocks.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
[sboyd@kernel.org: Remove CLK_GET_RATE_NOCACHE everywhere]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the RPMh clock driver to control the RPMh managed clock resources on
some of the Qualcomm Technologies, Inc. SoCs.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
[sboyd@kernel.org: Clean up whitespace, indentation, remove
cmd_db_ready check]
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
* clk-qcom-sdm845:
clk: qcom: Export clk_fabia_pll_configure()
clk: qcom: Add video clock controller driver for SDM845
dt-bindings: clock: Introduce QCOM Video clock bindings
clk: qcom: Add Global Clock controller (GCC) driver for SDM845
clk: qcom: Add DT bindings for SDM845 gcc clock controller
clk: qcom: Configure the RCGs to a safe source as needed
clk: qcom: Add support for BRANCH_HALT_SKIP flag for branch clocks
clk: qcom: Simplify gdsc status checking logic
clk: qcom: gdsc: Add support to poll CFG register to check GDSC state
clk: qcom: gdsc: Add support to poll for higher timeout value
clk: qcom: gdsc: Add support to reset AON and block reset logic
clk: qcom: Add support for controlling Fabia PLL
clk: qcom: Clear hardware clock control bit of RCG
Also fixup the Kconfig mess where SDM845 GCC has msm8998 in the
description and also the video Kconfig says things slightly differently
from the GCC one so just make it the same.
Add support for the video clock controller found on SDM845
based devices. This would allow video drivers to probe and
control their clocks.
Signed-off-by: Amit Nischal <anischal@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the global clock controller found on SDM845
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Amit Nischal <anischal@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the global clock controller found on MSM8998
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.
Signed-off-by: Joonwoo Park <joonwoop@codeaurora.org>
Signed-off-by: Imran Khan <kimran@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
[bjorn: Specify regs for alpha_plls, fix white spaces and add binding]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
* clk-iproc:
clk: iproc: Minor tidy up of iproc pll data structures
clk: iproc: Allow plls to do minor rate changes without reset
clk: iproc: Fix error in the pll post divider rate calculation
clk: iproc: Allow iproc pll to runtime calculate vco parameters
* clk-mvebu:
clk: mvebu: armada-37xx-periph: Use PTR_ERR_OR_ZERO()
* clk-qcom-a53:
clk: qcom: Add APCS clock controller support
clk: qcom: Add regmap mux-div clocks support
clk: qcom: Add A53 PLL support
Add a driver for the APCS clock controller. It is part of the APCS
hardware block, which among other things implements also a combined
mux and half integer divider functionality. It can choose between a
fixed-rate clock or the dedicated APCS (A53) PLL. The source and the
divider can be set both at the same time.
This is required for enabling CPU frequency scaling on MSM8916-based
platforms.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
[sboyd@codeaurora.org: Include rcg header for parent_map, drop
multiple unneeded includes, add COMPILE_TEST to APCS depends,
made tristate/modular]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add support for hardware that can switch both parent clock and divider
at the same time. This avoids generating intermediate frequencies from
either the old parent clock and new divider or new parent clock and
old divider combinations.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
[sboyd@codeaurora.org: Change a comment style, drop parent_map in
favor of a u32 array instead, export symbols for clk_ops and mux
function]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The CPUs on Qualcomm MSM8916-based platforms are clocked by two PLLs,
a primary (A53) CPU PLL and a secondary fixed-rate GPLL0. These sources
are connected to a mux and half-integer divider, which is feeding the
CPU cores.
This patch adds support for the primary CPU PLL which generates the
higher range of frequencies above 1GHz.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Amit Kucheria <amit.kucheria@linaro.org>
[sboyd@codeaurora.org: Move to devm provider registration,
NUL terminate frequency table, made tristate/modular]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Clkdiv module provides a clock output on the PMIC with CXO as
the source. This clock can be routed through PMIC GPIOs. Add
a device driver to configure this clkdiv module.
Signed-off-by: Tirupathi Reddy <tirupath@codeaurora.org>
[sboyd: Simplified code and moved to devm clk provider APIs]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.
By default all files without license information are under the default
license of the kernel, which is GPL version 2.
Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier. The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.
This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.
How this work was done:
Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
- file had no licensing information it it.
- file was a */uapi/* one with no licensing information in it,
- file was a */uapi/* one with existing licensing information,
Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.
The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne. Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.
The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed. Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.
Criteria used to select files for SPDX license identifier tagging was:
- Files considered eligible had to be source code files.
- Make and config files were included as candidates if they contained >5
lines of source
- File already had some variant of a license header in it (even if <5
lines).
All documentation files were explicitly excluded.
The following heuristics were used to determine which SPDX license
identifiers to apply.
- when both scanners couldn't find any license traces, file was
considered to have no license information in it, and the top level
COPYING file license applied.
For non */uapi/* files that summary was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 11139
and resulted in the first patch in this series.
If that file was a */uapi/* path one, it was "GPL-2.0 WITH
Linux-syscall-note" otherwise it was "GPL-2.0". Results of that was:
SPDX license identifier # files
---------------------------------------------------|-------
GPL-2.0 WITH Linux-syscall-note 930
and resulted in the second patch in this series.
- if a file had some form of licensing information in it, and was one
of the */uapi/* ones, it was denoted with the Linux-syscall-note if
any GPL family license was found in the file or had no licensing in
it (per prior point). Results summary:
SPDX license identifier # files
---------------------------------------------------|------
GPL-2.0 WITH Linux-syscall-note 270
GPL-2.0+ WITH Linux-syscall-note 169
((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) 21
((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) 17
LGPL-2.1+ WITH Linux-syscall-note 15
GPL-1.0+ WITH Linux-syscall-note 14
((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause) 5
LGPL-2.0+ WITH Linux-syscall-note 4
LGPL-2.1 WITH Linux-syscall-note 3
((GPL-2.0 WITH Linux-syscall-note) OR MIT) 3
((GPL-2.0 WITH Linux-syscall-note) AND MIT) 1
and that resulted in the third patch in this series.
- when the two scanners agreed on the detected license(s), that became
the concluded license(s).
- when there was disagreement between the two scanners (one detected a
license but the other didn't, or they both detected different
licenses) a manual inspection of the file occurred.
- In most cases a manual inspection of the information in the file
resulted in a clear resolution of the license that should apply (and
which scanner probably needed to revisit its heuristics).
- When it was not immediately clear, the license identifier was
confirmed with lawyers working with the Linux Foundation.
- If there was any question as to the appropriate license identifier,
the file was flagged for further research and to be revisited later
in time.
In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.
Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights. The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.
Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.
In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.
Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
- a full scancode scan run, collecting the matched texts, detected
license ids and scores
- reviewing anything where there was a license detected (about 500+
files) to ensure that the applied SPDX license was correct
- reviewing anything where there was no detection but the patch license
was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
SPDX license was correct
This produced a worksheet with 20 files needing minor correction. This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.
These .csv files were then reviewed by Greg. Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected. This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.) Finally Greg ran the script using the .csv files to
generate the patches.
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds support for the global clock controller found on
the ipq8074 based devices. This includes UART, I2C, SPI etc.
Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This adds initial support for clocks controlled by the Resource
Power Manager (RPM) processor on some Qualcomm SoCs, which use
the qcom_rpm driver to communicate with RPM.
Such platforms are apq8064 and msm8960.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This adds initial support for clocks controlled by the Resource
Power Manager (RPM) processor on some Qualcomm SoCs, which use
the qcom_smd_rpm driver to communicate with RPM.
Such platforms are msm8916, apq8084 and msm8974.
The RPM is a dedicated hardware engine for managing the shared
SoC resources in order to keep the lowest power profile. It
communicates with other hardware subsystems via shared memory
and accepts clock requests, aggregates the requests and turns
the clocks on/off or scales them on demand.
This driver is based on the codeaurora.org driver:
https://www.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/clk/qcom/clock-rpm.c
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@codeaurora.org: Remove useless braces for single line if]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The clock definition was ported from the Google 3.10 kernel tree to
work with the latest kernel.
Signed-off-by: Bastian Köcher <mail@kchr.de>
[jeremymc@redhat.com: created new commit of just dt-bindings]
Signed-off-by: Jeremy McNicoll <jeremymc@redhat.com>
[sboyd@codeaurora.org: Tidy up commit text and Kconfig help]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
In order to support the Qualcomm MDM9615 SoC, add support for
the Global and LPASS Clock Controllers.
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch adds support for the global clock controller found on
the IPQ4019 based devices. This includes UART, I2C, SPI etc.
Signed-off-by: Pradeep Banavathi <pradeepb@codeaurora.org>
Signed-off-by: Senthilkumar N L <snlakshm@codeaurora.org>
Signed-off-by: Varadarajan Narayanan <varada@codeaurora.org>
Signed-off-by: Matthew McClintock <mmcclint@codeaurora.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
[sboyd@codeaurora.org: Drop 0x16024 enable_reg in crypto_ahb]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add a driver for the multimedia clock controller found on MSM8996
based devices. This should allow most multimedia device drivers
to probe and control their clocks.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add support for the global clock controller found on MSM8996
based devices. This should allow most non-multimedia device
drivers to probe and control their clocks.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add support for configuring rates of, enabling, and disabling
Alpha PLLs. This is sufficient for the types of PLLs found in
the global and multimedia clock controllers.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
GDSCs (Global Distributed Switch Controllers) are responsible for
safely collapsing and restoring power to peripherals in the SoC.
These are best modelled as power domains using genpd and given
the registers are scattered throughout the clock controller register
space, its best to have the support added through the clock driver.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch adds support for the global clock controller found on the MSM8916
based devices. It allows the various device drivers to probe and control
their clocks and resets.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
[sboyd@codeaurora.org: Removed NULL entry from parent_maps]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
