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In legacy_init_clockgen(), we need to hold the reference returned
by of_get_parent() and use it to call of_node_put() for refcount
balance.
Beside, in create_sysclk(), we need to call of_node_put() on 'sysclk'
also for refcount balance.
Fixes: 0dfc86b317 ("clk: qoriq: Move chip-specific knowledge into driver")
Signed-off-by: Liang He <windhl@126.com>
Link: https://lore.kernel.org/r/20220628143851.171299-1-windhl@126.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
To avoid future mistakes in the device tree for the clockgen module, add
constants for the clockgen subtype as well as a macro for the PLL
divider.
Signed-off-by: Michael Walle <michael@walle.cc>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201108185113.31377-4-michael@walle.cc
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This allows to clock the cores with 1 GHz, 500 MHz and 250 MHz.
Signed-off-by: Michael Krummsdorf <michael.krummsdorf@tq-group.com>
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Link: https://lore.kernel.org/r/20200610113837.27117-1-matthias.schiffer@ew.tq-group.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
drivers/clk/clk-qoriq.c:138:38: warning: unused variable
'p5020_cmux_grp1' [-Wunused-const-variable] static const struct
clockgen_muxinfo p5020_cmux_grp1
drivers/clk/clk-qoriq.c:146:38: warning: unused variable
'p5020_cmux_grp2' [-Wunused-const-variable] static const struct
clockgen_muxinfo p5020_cmux_grp2
In the definition of the p5020 chip, the p2041 chip's info was used
instead. The p5020 and p2041 chips have different info. This is most
likely a typo.
Link: https://github.com/ClangBuiltLinux/linux/issues/525
Cc: clang-built-linux@googlegroups.com
Signed-off-by: Nathan Huckleberry <nhuck@google.com>
Link: https://lkml.kernel.org/r/20190627220642.78575-1-nhuck@google.com
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Scott Wood <oss@buserror.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
side. The two main highlights in the core framework are the addition of an bulk
clk_get API that handles optional clks and an extra debugfs file that tells the
developer about the current parent of a clk.
The driver updates are dominated by i.MX in the diffstat, but that is mostly
because that SoC has started converting to the clk_hw style of clk
registration. The next big update is in the Amlogic meson clk driver that
gained some support for audio, cpu, and temperature clks while fixing some PLL
issues. Finally, the biggest thing that stands out is the conversion of a large
part of the Allwinner sunxi-ng driver to the new clk parent scheme that uses
less strings and more pointer comparisons to match clk parents and children up.
In general, it looks like we have a lot of little fixes and tweaks here and
there to clk data along with the normal addition of a handful of new drivers
and a couple new core framework features.
Core:
- Add a 'clk_parent' file in clk debugfs
- Add a clk_bulk_get_optional() API (with devm too)
New Drivers:
- Support gated clk controller on MIPS based BCM63XX SoCs
- Support SiLabs Si5341 and Si5340 chips
- Support for CPU clks on Raspberry Pi devices
- Audsys clock driver for MediaTek MT8516 SoCs
Updates:
- Convert a large portion of the Allwinner sunxi-ng driver to new clk parent scheme
- Small frequency support for SiLabs Si544 chips
- Slow clk support for AT91 SAM9X60 SoCs
- Remove dead code in various clk drivers (-Wunused)
- Support for Marvell 98DX1135 SoCs
- Get duty cycle of generic pwm clks
- Improvement in mmc phase calculation and cleanup of some rate defintions
- Switch i.MX6 and i.MX7 clock drivers to clk_hw based APIs
- Add GPIO, SNVS and GIC clocks for i.MX8 drivers
- Mark imx6sx/ul/ull/sll MMDC_P1_IPG and imx8mm DRAM_APB as critical clock
- Correct imx7ulp nic1_bus_clk and imx8mm audio_pll2_clk clock setting
- Add clks for new Exynos5422 Dynamic Memory Controller driver
- Clock definition for Exynos4412 Mali
- Add CMM (Color Management Module) clocks on Renesas R-Car H3, M3-N, E3, and D3
- Add TPU (Timer Pulse Unit / PWM) clocks on Renesas RZ/G2M
- Support for 32 bit clock IDs in TI's sci-clks for J721e SoCs
- TI clock probing done from DT by default instead of firmware
- Fix Amlogic Meson mpll fractional part and spread sprectrum issues
- Add Amlogic meson8 audio clocks
- Add Amlogic g12a temperature sensors clocks
- Add Amlogic g12a and g12b cpu clocks
- Add TPU (Timer Pulse Unit / PWM) clocks on Renesas R-Car H3, M3-W, and M3-N
- Add CMM (Color Management Module) clocks on Renesas R-Car M3-W
- Add Clock Domain support on Renesas RZ/N1
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"This round of clk driver and framework updates is heavy on the driver
update side. The two main highlights in the core framework are the
addition of an bulk clk_get API that handles optional clks and an
extra debugfs file that tells the developer about the current parent
of a clk.
The driver updates are dominated by i.MX in the diffstat, but that is
mostly because that SoC has started converting to the clk_hw style of
clk registration. The next big update is in the Amlogic meson clk
driver that gained some support for audio, cpu, and temperature clks
while fixing some PLL issues. Finally, the biggest thing that stands
out is the conversion of a large part of the Allwinner sunxi-ng driver
to the new clk parent scheme that uses less strings and more pointer
comparisons to match clk parents and children up.
In general, it looks like we have a lot of little fixes and tweaks
here and there to clk data along with the normal addition of a handful
of new drivers and a couple new core framework features.
Core:
- Add a 'clk_parent' file in clk debugfs
- Add a clk_bulk_get_optional() API (with devm too)
New Drivers:
- Support gated clk controller on MIPS based BCM63XX SoCs
- Support SiLabs Si5341 and Si5340 chips
- Support for CPU clks on Raspberry Pi devices
- Audsys clock driver for MediaTek MT8516 SoCs
Updates:
- Convert a large portion of the Allwinner sunxi-ng driver to new clk parent scheme
- Small frequency support for SiLabs Si544 chips
- Slow clk support for AT91 SAM9X60 SoCs
- Remove dead code in various clk drivers (-Wunused)
- Support for Marvell 98DX1135 SoCs
- Get duty cycle of generic pwm clks
- Improvement in mmc phase calculation and cleanup of some rate defintions
- Switch i.MX6 and i.MX7 clock drivers to clk_hw based APIs
- Add GPIO, SNVS and GIC clocks for i.MX8 drivers
- Mark imx6sx/ul/ull/sll MMDC_P1_IPG and imx8mm DRAM_APB as critical clock
- Correct imx7ulp nic1_bus_clk and imx8mm audio_pll2_clk clock setting
- Add clks for new Exynos5422 Dynamic Memory Controller driver
- Clock definition for Exynos4412 Mali
- Add CMM (Color Management Module) clocks on Renesas R-Car H3, M3-N, E3, and D3
- Add TPU (Timer Pulse Unit / PWM) clocks on Renesas RZ/G2M
- Support for 32 bit clock IDs in TI's sci-clks for J721e SoCs
- TI clock probing done from DT by default instead of firmware
- Fix Amlogic Meson mpll fractional part and spread sprectrum issues
- Add Amlogic meson8 audio clocks
- Add Amlogic g12a temperature sensors clocks
- Add Amlogic g12a and g12b cpu clocks
- Add TPU (Timer Pulse Unit / PWM) clocks on Renesas R-Car H3, M3-W, and M3-N
- Add CMM (Color Management Module) clocks on Renesas R-Car M3-W
- Add Clock Domain support on Renesas RZ/N1"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (190 commits)
clk: consoldiate the __clk_get_hw() declarations
clk: sprd: Add check for return value of sprd_clk_regmap_init()
clk: lochnagar: Update DT binding doc to include the primary SPDIF MCLK
clk: Add Si5341/Si5340 driver
dt-bindings: clock: Add silabs,si5341
clk: clk-si544: Implement small frequency change support
clk: add BCM63XX gated clock controller driver
devicetree: document the BCM63XX gated clock bindings
clk: at91: sckc: use dedicated functions to unregister clock
clk: at91: sckc: improve error path for sama5d4 sck registration
clk: at91: sckc: remove unnecessary line
clk: at91: sckc: improve error path for sam9x5 sck register
clk: at91: sckc: add support to free slow clock osclillator
clk: at91: sckc: add support to free slow rc oscillator
clk: at91: sckc: add support to free slow oscillator
clk: rockchip: export HDMIPHY clock on rk3228
clk: rockchip: add watchdog pclk on rk3328
clk: rockchip: add clock id for hdmi_phy special clock on rk3228
clk: rockchip: add clock id for watchdog pclk on rk3328
clk: at91: sckc: add support for SAM9X60
...
Add clockgen support and configuration for NXP SoC lx2160a
with compatible property as "fsl,lx2160a-clockgen".
Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Acked-by: Stephen Boyd <sboyd@kernel.org>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Based on 2 normalized pattern(s):
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation
this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license version 2 as
published by the free software foundation #
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference in 4122 file(s).
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Enrico Weigelt <info@metux.net>
Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Increase size of cmux_to_group array, to accomdate entry of
-1 termination.
Added -1, terminated, entry for 4080_cmux_grpX.
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com>
Signed-off-by: Vabhav Sharma <vabhav.sharma@nxp.com>
Acked-by: Scott Wood <oss@buserror.net>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
More PLL divider clocks are needed by clock consumer IP. So enlarge
the PLL divider array to accommodate more divider clocks.
Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
We intended to print "ret" but there is a copy and paste bug from the
previous error message.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The of_find_compatible_node() returns a node pointer with refcount
incremented, but there is the lack of use of the of_node_put() when
done. Add the missing of_node_put() to release the refcount.
Signed-off-by: Yangtao Li <tiny.windzz@gmail.com>
Fixes: 0dfc86b317 ("clk: qoriq: Move chip-specific knowledge into driver")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add more chip-specific compatible strings to support more Socs.
Signed-off-by: Yuantian Tang <andy.tang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
In preparation to remove the node name pointer from struct device_node,
convert printf users to use the %pOFn format specifier.
Cc: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
More divider clocks are needed by IP. So enlarge the PLL divider
array to accommodate more divider clocks.
Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Now that we have a custom printf format specifier, convert users of
full_name to use %pOF instead. This is preparation to remove storing
of the full path string for each node.
Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: "Emilio López" <emilio@elopez.com.ar>
Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Jonathan Hunter <jonathanh@nvidia.com>
Cc: Tero Kristo <t-kristo@ti.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-mediatek@lists.infradead.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: James Liao <jamesjj.liao@mediatek.com>
Acked-by: Alexandre TORGUE <alexandre.torgue@st.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Register each PLL and its division clocks to clock
lookup table to facilitate the clock look up for
clock consumer.
Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Clock on ls1088a chip takes primary clocking input from the external
SYSCLK signal. The SYSCLK input (frequency) is multiplied using
multiple phase locked loops (PLL) to create a variety of frequencies
which can then be passed to a variety of internal logic, including
cores and peripheral IP modules.
Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
ls1012a has separate input root clocks for core PLLs versus the
platform PLL, with the latter described as sysclk in the hw docs.
If a second input clock, named "coreclk", is present, this clock will be
used for the core PLLs.
Signed-off-by: Scott Wood <oss@buserror.net>
Signed-off-by: Tang Yuantian <andy.tang@nxp.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
* clk-fixes:
clk: mmp: pxa910: fix return value check in pxa910_clk_init()
clk: mmp: pxa168: fix return value check in pxa168_clk_init()
clk: mmp: mmp2: fix return value check in mmp2_clk_init()
clk: qoriq: Don't allow CPU clocks higher than starting value
The boot-time frequency of a CPU is considered its rated maximum, as we
have no other source of such information. However, this was previously
only used for chips with 80% restrictions on secondary PLLs. This
usually wasn't a problem because most chips/configs boot with a divider
of /1, with other dividers being used only for dynamic frequency
reduction. However, at least one config (LS1021A at less than 1 GHz)
uses a different divider for top speed. This was causing cpufreq to set
a frequency beyond the chip's rated speed.
This is fixed by applying a 100%-of-initial-speed limit to all CPU PLLs,
similar to the existing 80% limit that only applied to some.
Signed-off-by: Scott Wood <oss@buserror.net>
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The offset of Core Cluster clock control/status register
on cluster group V3 version is different from others, and
should be plus 0x70000.
Signed-off-by: Tang Yuantian <yuantian.tang@nxp.com>
Reviewed-by: Scott Wood <oss@buserror.net>
Fixes: 9e19ca2f62 ("clk: qoriq: Add ls2080a support.")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add __init attribute on a function that is only called from other __init
functions and that is not inlined, at least with gcc version 4.8.4 on an
x86 machine with allyesconfig. Currently, the function is put in the
.text.unlikely segment. Declaring it as __init will cause it to be put in
the .init.text and to disappear after initialization.
The result of objdump -x on the function before the change is as follows:
0000000000000000 l F .text.unlikely 0000000000000071 sysclk_from_fixed.constprop.5
And after the change it is as follows:
0000000000000480 l F .init.text 000000000000006c sysclk_from_fixed.constprop.5
Done with the help of Coccinelle. The semantic patch checks for local
static non-init functions that are called from an __init function and are
not called from any other function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This flag is a no-op now. Remove usage of the flag.
Cc: Hou Zhiqiang <B48286@freescale.com>
Cc: Scott Wood <scottwood@freescale.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
If get_pll_div() fails we exited by returning NULL but we missed
releasing hwc.
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Fixes: 0dfc86b317 ("clk: qoriq: Move chip-specific knowledge into driver")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
LS2080A is the first implementation of the chassis 3 clockgen, which
has a different register layout than previous chips. It is also little
endian, unlike previous chips.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
The device tree should describe the chips (or chip-like subblocks) in
the system, but it generally does not describe individual registers --
it should identify, rather than describe, a programming interface.
This has not been the case with the QorIQ clockgen nodes. The
knowledge of what each bit setting of CLKCnCSR means is encoded in
three places (binding, pll node, and mux node), and the last also needs
to know which options are valid on a particular chip. All three of
these locations are considered stable ABI, making it difficult to fix
mistakes (of which I have found several), much less refactor the
abstraction to be able to address problems, limitations, or new chips.
Under the current binding, a pll clock specifier of 2 means that the
PLL is divided by 4 -- and the driver implements this, unless there
happen to be four clock-output-names rather than 3, in which case it
interprets it as PLL divided by 3. This does not appear in the binding
documentation at all. That hack is now considered stable ABI.
The current device tree nodes contain errors, such as saying that
T1040 can set a core clock to PLL/4 when only PLL and PLL/2 are options.
The current binding also ignores some restrictions on clock selection,
such as p5020's requirement that if a core uses the "wrong" PLL, that
PLL must be clocked lower than the "correct" PLL and be at most 80% of
the rated CPU frequency.
Possibly because of the lack of the ability to express such nuance in
the binding, some valid options are omitted from the device trees, such
as the ability on p4080 to run cores 0-3 from PLL3 and cores 4-7 from
PLL1 (again, only if they are at most 80% of rated CPU frequency).
This omission, combined with excessive caution in the cpufreq driver
(addressed in a subsequent patch), means that currently on a 1500 MHz
p4080 with typical PLL configuration, cpufreq can lower the frequency
to 1200 MHz on half the CPUs and do nothing on the others. With this
patchset, all CPUs can be lowered to 1200 MHz on a rev2 p4080, and on a
rev3 p4080 half can be lowered to 750 MHz and the other half to 600
MHz.
The current binding only deals with CPU clocks. To describe FMan in
the device tree, we need to describe its clock. Some chips have
additional muxes that work like the CPU muxes, but are not described in
the device tree. Others require inspecting the Reset Control Word to
determine which PLL is used. Rather than continue to extend this mess,
replace it. Have the driver bind to the chip-specific clockgen
compatible, and keep the detailed description of quirky chip variations
in the driver, where it can be easily fixed, refactored, and extended.
Older device trees will continue to work (including a workaround for
old ls1021a device trees that are missing compatible and reg in the
clockgen node, which even the old binding required). The pll/mux
details in old device trees will be ignored, but "clocks" properties
pointing at the old nodes will still work, and be directed at the
corresponding new clock.
Signed-off-by: Scott Wood <scottwood@freescale.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Currently a mix of clk-qoriq/qoriq-clk and no prefix is used
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
drivers/clk/clk-qoriq.c:59:22: warning: symbol 'cmux_ops' was not declared. Should it be static?
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
WARNING:OOM_MESSAGE: Possible unnecessary 'out of memory' message
+ if (!parent_names) {
+ pr_err("%s: could not allocate parent_names\n", __func__);
WARNING:OOM_MESSAGE: Possible unnecessary 'out of memory' message
+ if (!cmux_clk) {
+ pr_err("%s: could not allocate cmux_clk\n", __func__);
WARNING:OOM_MESSAGE: Possible unnecessary 'out of memory' message
+ if (!subclks) {
+ pr_err("%s: could not allocate subclks\n", __func__);
WARNING:OOM_MESSAGE: Possible unnecessary 'out of memory' message
+ if (!onecell_data) {
+ pr_err("%s: could not allocate onecell_data\n", __func__);
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis
+ rc = of_property_read_string_index(np, "clock-output-names",
+ 0, &clk_name);
CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis
+ pr_err("Could not register clock provider for node:%s\n",
+ np->name);
CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis
+ rc = of_property_read_string_index(np, "clock-output-names",
+ i, &clk_name);
CHECK:PARENTHESIS_ALIGNMENT: Alignment should match open parenthesis
+ pr_err("Could not register clk provider for node:%s\n",
+ np->name);
Signed-off-by: Emil Medve <Emilian.Medve@Freescale.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
Freescale introduced new ARM-based socs which using the compatible
clock IP block with PowerPC-based socs'. So this driver can be used
on both platforms.
Updated relevant descriptions and renamed this driver to better
represent its meaning and keep the function of driver untouched.
Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>
