<feed xmlns='http://www.w3.org/2005/Atom'>
<title>linux.git/Documentation/devicetree/bindings/opp, branch v4.16</title>
<subtitle>Linux kernel source tree</subtitle>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/'/>
<entry>
<title>Merge branches 'pm-opp', 'pm-devfreq', 'pm-avs' and 'pm-tools'</title>
<updated>2018-01-18T01:56:04+00:00</updated>
<author>
<name>Rafael J. Wysocki</name>
<email>rafael.j.wysocki@intel.com</email>
</author>
<published>2018-01-18T01:56:04+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=ee43730d65155c5b3c3d0531f11daf59f8f42a73'/>
<id>ee43730d65155c5b3c3d0531f11daf59f8f42a73</id>
<content type='text'>
* pm-opp:
  OPP: Introduce "required-opp" property
  OPP: Allow OPP table to be used for power-domains

* pm-devfreq:
  PM / devfreq: Fix potential NULL pointer dereference in governor_store
  PM / devfreq: Propagate error from devfreq_add_device()

* pm-avs:
  PM / AVS: rockchip-io: account for const type of of_device_id.data

* pm-tools:
  tools/power/x86/intel_pstate_tracer: Free the trace buffer memory
  cpupower: Remove FSF address
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
* pm-opp:
  OPP: Introduce "required-opp" property
  OPP: Allow OPP table to be used for power-domains

* pm-devfreq:
  PM / devfreq: Fix potential NULL pointer dereference in governor_store
  PM / devfreq: Propagate error from devfreq_add_device()

* pm-avs:
  PM / AVS: rockchip-io: account for const type of of_device_id.data

* pm-tools:
  tools/power/x86/intel_pstate_tracer: Free the trace buffer memory
  cpupower: Remove FSF address
</pre>
</div>
</content>
</entry>
<entry>
<title>OPP: Introduce "required-opp" property</title>
<updated>2017-12-22T05:16:18+00:00</updated>
<author>
<name>Viresh Kumar</name>
<email>viresh.kumar@linaro.org</email>
</author>
<published>2017-12-18T09:53:48+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=e856f078bcf120e1627c750014d2612974ed81a2'/>
<id>e856f078bcf120e1627c750014d2612974ed81a2</id>
<content type='text'>
Devices have inter-dependencies some times. For example a device that
needs to run at 800 MHz, needs another device (e.g. Its power domain) to
be configured at a particular operating performance point.

This patch introduces a new property "required-opp" which can be present
directly in a device's node (if it doesn't need to change its OPPs), or
in device's OPP nodes. More details on the property can be seen in the
binding itself.

Reviewed-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Reviewed-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Devices have inter-dependencies some times. For example a device that
needs to run at 800 MHz, needs another device (e.g. Its power domain) to
be configured at a particular operating performance point.

This patch introduces a new property "required-opp" which can be present
directly in a device's node (if it doesn't need to change its OPPs), or
in device's OPP nodes. More details on the property can be seen in the
binding itself.

Reviewed-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Reviewed-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>OPP: Allow OPP table to be used for power-domains</title>
<updated>2017-12-22T05:16:16+00:00</updated>
<author>
<name>Viresh Kumar</name>
<email>viresh.kumar@linaro.org</email>
</author>
<published>2016-11-18T06:53:46+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=972bc90ed8f6008f5e2d42c72d894b2401736519'/>
<id>972bc90ed8f6008f5e2d42c72d894b2401736519</id>
<content type='text'>
Power-domains can also have their active states and this patch enhances
the OPP binding to define those. The power domains can use the OPP
bindings as is, with one additional change to Allow
"operating-points-v2" property to contain multiple phandles for power
domain providers providing multiple domains.

Reviewed-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Reviewed-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Power-domains can also have their active states and this patch enhances
the OPP binding to define those. The power domains can use the OPP
bindings as is, with one additional change to Allow
"operating-points-v2" property to contain multiple phandles for power
domain providers providing multiple domains.

Reviewed-by: Ulf Hansson &lt;ulf.hansson@linaro.org&gt;
Reviewed-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>dt-bindings: opp: Introduce ti-opp-supply bindings</title>
<updated>2017-12-17T18:17:44+00:00</updated>
<author>
<name>Dave Gerlach</name>
<email>d-gerlach@ti.com</email>
</author>
<published>2017-12-15T04:25:27+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=212b7287ae6098337fffa9c0cd7e139dceb98125'/>
<id>212b7287ae6098337fffa9c0cd7e139dceb98125</id>
<content type='text'>
Document the devicetree bindings that describe Texas Instruments
opp-supply which allow a platform to describe multiple regulators and
additional information, such as registers containing data needed to
program aforementioned regulators.

Signed-off-by: Dave Gerlach &lt;d-gerlach@ti.com&gt;
Acked-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Document the devicetree bindings that describe Texas Instruments
opp-supply which allow a platform to describe multiple regulators and
additional information, such as registers containing data needed to
program aforementioned regulators.

Signed-off-by: Dave Gerlach &lt;d-gerlach@ti.com&gt;
Acked-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>dt-bindings: Remove "status" from examples</title>
<updated>2017-09-05T15:03:06+00:00</updated>
<author>
<name>Rob Herring</name>
<email>robh@kernel.org</email>
</author>
<published>2017-09-01T20:05:19+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=4da722ca19f30f7db250db808d1ab1703607a932'/>
<id>4da722ca19f30f7db250db808d1ab1703607a932</id>
<content type='text'>
Pretty much any node can have a status property, so it doesn't need to
be in examples.

Converted with the following command and removed examples with SoC and
board specific splits:

git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'

Acked-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Signed-off-by: Rob Herring &lt;robh@kernel.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pretty much any node can have a status property, so it doesn't need to
be in examples.

Converted with the following command and removed examples with SoC and
board specific splits:

git grep -l -E 'status.*=.*' Documentation/devicetree/ | xargs sed -i -E '/\sstatus.*=.*"(disabled|ok|okay)/d'

Acked-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Signed-off-by: Rob Herring &lt;robh@kernel.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>PM / OPP: Use - instead of @ for DT entries</title>
<updated>2017-06-23T23:28:52+00:00</updated>
<author>
<name>Viresh Kumar</name>
<email>viresh.kumar@linaro.org</email>
</author>
<published>2017-06-22T03:45:11+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=b21569cf1de925e0a42c9964bd7f520cb4a4d875'/>
<id>b21569cf1de925e0a42c9964bd7f520cb4a4d875</id>
<content type='text'>
Compiling the DT file with W=1, DTC warns like follows:

Warning (unit_address_vs_reg): Node /opp_table0/opp@1000000000 has a
unit name, but no reg property

Fix this by replacing '@' with '-' as the OPP nodes will never have a
"reg" property.

Reported-by: Krzysztof Kozlowski &lt;krzk@kernel.org&gt;
Reported-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Suggested-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Reviewed-by: Stephen Boyd &lt;sboyd@codeaurora.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Compiling the DT file with W=1, DTC warns like follows:

Warning (unit_address_vs_reg): Node /opp_table0/opp@1000000000 has a
unit name, but no reg property

Fix this by replacing '@' with '-' as the OPP nodes will never have a
"reg" property.

Reported-by: Krzysztof Kozlowski &lt;krzk@kernel.org&gt;
Reported-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Suggested-by: Mark Rutland &lt;mark.rutland@arm.com&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Reviewed-by: Stephen Boyd &lt;sboyd@codeaurora.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>Merge tag 'pm-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm</title>
<updated>2017-03-03T01:33:52+00:00</updated>
<author>
<name>Linus Torvalds</name>
<email>torvalds@linux-foundation.org</email>
</author>
<published>2017-03-03T01:33:52+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=080e4168c0834ccc853c48259e16a5c556c7ecba'/>
<id>080e4168c0834ccc853c48259e16a5c556c7ecba</id>
<content type='text'>
Pull more power management updates deom Rafael Wysocki:
 "These fix two bugs introduced by recent power management updates (in
  the cpuidle menu governor and intel_pstate) and a few other issues,
  clean up things and remove unused code.

  Specifics:

   - Fix for a cpuidle menu governor problem that started to take an
     unnecessary spinlock after one of the recent updates and that did
     not play well with the RT patch (Rafael Wysocki).

   - Fix for the new intel_pstate operation mode switching feature added
     recently that did not reinitialize P-state limits properly when
     switching operation modes (Rafael Wysocki).

   - Removal of unused global notifiers from the PM QoS framework
     (Viresh Kumar).

   - Generic power domains framework update to make it handle
     asynchronous invocations of PM callbacks in the "noirq" phases of
     system suspend/hibernation correctly (Ulf Hansson).

   - Two hibernation core cleanups (Rafael Wysocki).

   - intel_idle cleanup related to the sysfs interface (Len Brown).

   - Off-by-one bug fix in the OPP (Operating Performance Points)
     framework (Andrzej Hajda).

   - OPP framework's documentation fix (Viresh Kumar).

   - cpufreq qoriq driver cleanup (Tang Yuantian).

   - Fixes for typos in comments in the device runtime PM framework
     (Christophe Jaillet)"

* tag 'pm-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / OPP: Documentation: Fix opp-microvolt in examples
  intel_idle: stop exposing platform acronyms in sysfs
  cpufreq: intel_pstate: Fix limits issue with operation mode switching
  PM / hibernate: Define pr_fmt() and use pr_*() instead of printk()
  PM / hibernate: Untangle power_down()
  cpuidle: menu: Avoid taking spinlock for accessing QoS values
  PM / QoS: Remove global notifiers
  PM / runtime: Fix some typos
  cpufreq: qoriq: clean up unused code
  PM / OPP: fix off-by-one bug in dev_pm_opp_get_max_volt_latency loop
  PM / Domains: Power off masters immediately in the power off sequence
  PM / Domains: Rename is_async to one_dev_on for genpd_power_off()
  PM / Domains: Move genpd_power_off() above genpd_power_on()
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Pull more power management updates deom Rafael Wysocki:
 "These fix two bugs introduced by recent power management updates (in
  the cpuidle menu governor and intel_pstate) and a few other issues,
  clean up things and remove unused code.

  Specifics:

   - Fix for a cpuidle menu governor problem that started to take an
     unnecessary spinlock after one of the recent updates and that did
     not play well with the RT patch (Rafael Wysocki).

   - Fix for the new intel_pstate operation mode switching feature added
     recently that did not reinitialize P-state limits properly when
     switching operation modes (Rafael Wysocki).

   - Removal of unused global notifiers from the PM QoS framework
     (Viresh Kumar).

   - Generic power domains framework update to make it handle
     asynchronous invocations of PM callbacks in the "noirq" phases of
     system suspend/hibernation correctly (Ulf Hansson).

   - Two hibernation core cleanups (Rafael Wysocki).

   - intel_idle cleanup related to the sysfs interface (Len Brown).

   - Off-by-one bug fix in the OPP (Operating Performance Points)
     framework (Andrzej Hajda).

   - OPP framework's documentation fix (Viresh Kumar).

   - cpufreq qoriq driver cleanup (Tang Yuantian).

   - Fixes for typos in comments in the device runtime PM framework
     (Christophe Jaillet)"

* tag 'pm-extra-4.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / OPP: Documentation: Fix opp-microvolt in examples
  intel_idle: stop exposing platform acronyms in sysfs
  cpufreq: intel_pstate: Fix limits issue with operation mode switching
  PM / hibernate: Define pr_fmt() and use pr_*() instead of printk()
  PM / hibernate: Untangle power_down()
  cpuidle: menu: Avoid taking spinlock for accessing QoS values
  PM / QoS: Remove global notifiers
  PM / runtime: Fix some typos
  cpufreq: qoriq: clean up unused code
  PM / OPP: fix off-by-one bug in dev_pm_opp_get_max_volt_latency loop
  PM / Domains: Power off masters immediately in the power off sequence
  PM / Domains: Rename is_async to one_dev_on for genpd_power_off()
  PM / Domains: Move genpd_power_off() above genpd_power_on()
</pre>
</div>
</content>
</entry>
<entry>
<title>PM / OPP: Documentation: Fix opp-microvolt in examples</title>
<updated>2017-03-01T21:47:30+00:00</updated>
<author>
<name>Viresh Kumar</name>
<email>viresh.kumar@linaro.org</email>
</author>
<published>2017-03-01T11:09:55+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=28db0c7b1c7fbca3637994c1ce3c4ffe142e2755'/>
<id>28db0c7b1c7fbca3637994c1ce3c4ffe142e2755</id>
<content type='text'>
The triplet present in "opp-microvolt" property should be in the order
&lt;target min max&gt;, while all the examples have it in the order
&lt;min target max&gt;.

Fix it.

Luckily all of the users of "opp-microvolt" property have applied brain
instead of copying the examples from documentation and none of the
actual dts files have it wrong.

Reported-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
The triplet present in "opp-microvolt" property should be in the order
&lt;target min max&gt;, while all the examples have it in the order
&lt;min target max&gt;.

Fix it.

Luckily all of the users of "opp-microvolt" property have applied brain
instead of copying the examples from documentation and none of the
actual dts files have it wrong.

Reported-by: Rob Herring &lt;robh@kernel.org&gt;
Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>scripts/spelling.txt: add "an user" pattern and fix typo instances</title>
<updated>2017-02-28T02:43:46+00:00</updated>
<author>
<name>Masahiro Yamada</name>
<email>yamada.masahiro@socionext.com</email>
</author>
<published>2017-02-27T22:28:47+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=9332ef9dbd172d4ab0a0141df7cb21c696a5ce96'/>
<id>9332ef9dbd172d4ab0a0141df7cb21c696a5ce96</id>
<content type='text'>
Fix typos and add the following to the scripts/spelling.txt:

  an user||a user
  an userspace||a userspace

I also added "userspace" to the list since it is a common word in Linux.
I found some instances for "an userfaultfd", but I did not add it to the
list.  I felt it is endless to find words that start with "user" such as
"userland" etc., so must draw a line somewhere.

Link: http://lkml.kernel.org/r/1481573103-11329-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
Fix typos and add the following to the scripts/spelling.txt:

  an user||a user
  an userspace||a userspace

I also added "userspace" to the list since it is a common word in Linux.
I found some instances for "an userfaultfd", but I did not add it to the
list.  I felt it is endless to find words that start with "user" such as
"userland" etc., so must draw a line somewhere.

Link: http://lkml.kernel.org/r/1481573103-11329-4-git-send-email-yamada.masahiro@socionext.com
Signed-off-by: Masahiro Yamada &lt;yamada.masahiro@socionext.com&gt;
Signed-off-by: Andrew Morton &lt;akpm@linux-foundation.org&gt;
Signed-off-by: Linus Torvalds &lt;torvalds@linux-foundation.org&gt;
</pre>
</div>
</content>
</entry>
<entry>
<title>PM / OPP: Reword binding supporting multiple regulators per device</title>
<updated>2016-12-06T01:27:58+00:00</updated>
<author>
<name>Viresh Kumar</name>
<email>viresh.kumar@linaro.org</email>
</author>
<published>2016-12-01T10:58:15+00:00</published>
<link rel='alternate' type='text/html' href='https://git.tavy.me/linux.git/commit/?id=579c49efdf5a04869b29891e46cde0ed4df5480a'/>
<id>579c49efdf5a04869b29891e46cde0ed4df5480a</id>
<content type='text'>
On certain platforms (like TI), DVFS for a single device (CPU) requires
configuring multiple power supplies.

The OPP bindings already contains binding and example to explain this
case, but it isn't sufficient.

- There is no way for the code parsing these bindings to know which
  voltage values belong to which power supply.

- It is not possible to know the order in which the supplies need to be
  configured while switching OPPs.

This patch clarifies on those details by mentioning that such
information is left for the implementation specific bindings to explain.
They may want to hardcode such details or implement their own properties
to get such information. All implementations using multiple regulators
for their devices must provide a binding document explaining their
implementation.

Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Reviewed-by: Stephen Boyd &lt;sboyd@codeaurora.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</content>
<content type='xhtml'>
<div xmlns='http://www.w3.org/1999/xhtml'>
<pre>
On certain platforms (like TI), DVFS for a single device (CPU) requires
configuring multiple power supplies.

The OPP bindings already contains binding and example to explain this
case, but it isn't sufficient.

- There is no way for the code parsing these bindings to know which
  voltage values belong to which power supply.

- It is not possible to know the order in which the supplies need to be
  configured while switching OPPs.

This patch clarifies on those details by mentioning that such
information is left for the implementation specific bindings to explain.
They may want to hardcode such details or implement their own properties
to get such information. All implementations using multiple regulators
for their devices must provide a binding document explaining their
implementation.

Signed-off-by: Viresh Kumar &lt;viresh.kumar@linaro.org&gt;
Acked-by: Rob Herring &lt;robh@kernel.org&gt;
Reviewed-by: Stephen Boyd &lt;sboyd@codeaurora.org&gt;
Signed-off-by: Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;
</pre>
</div>
</content>
</entry>
</feed>
