[PATCH] Documentation: cpufreq: Additional interface for acpi-cpufreq

[PATCH] Documentation: cpufreq: Additional interface for acpi-cpufreq

[Srinivas Pandruvada]

Added new file for acpi-cpufreq driver, with explanation for
base_frequency.

Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
---
 Documentation/cpu-freq/acpi-cpufreq-addition.txt | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 Documentation/cpu-freq/acpi-cpufreq-addition.txt

diff --git a/Documentation/cpu-freq/acpi-cpufreq-addition.txt b/Documentation/cpu-freq/acpi-cpufreq-addition.txt
new file mode 100644
index 0000000..40efb22
--- /dev/null
+++ b/Documentation/cpu-freq/acpi-cpufreq-addition.txt
@@ -0,0 +1,20 @@
+Additional sysfs attribute for acpi-cpufreq
+
+In addition to the standard sysfs interface as defined in the
+user-guide.txt under section "Preferred Interface: sysfs",
+acpi-cpufreq can have following additional sysfs attribute:
+
+base_frequency: 	Max non-turbo frequency
+For example:
+scaling_available_frequencies displays list of available frequencies which
+can be used to set max/min or current scaling frequency.
+>cat scaling_available_frequencies
+2301000 2300000 2200000 2000000 1900000 1800000 1700000 1500000 1400000
+1300000 1100000 1000000 900000 800000 600000 500000
+If the base_frequency attribute is present, then any frequency above is
+purely opportunistic or turbo frequency. For example
+>cat base_frequency
+2200000
+Then in the above displayed list of scaling_available_frequencies, any
+frequency 2300000 or 2301000 is opportunistic or turbo frequency.
+
-- 
2.5.0

Re: [PATCH] Documentation: cpufreq: Additional interface for acpi-cpufreq

[Rafael J. Wysocki]

Hi,

On Mon, Feb 29, 2016 at 10:06 PM, Srinivas Pandruvada
<srinivas.pandruvada@linux.intel.com> wrote:
> Added new file for acpi-cpufreq driver, with explanation for
> base_frequency.
>
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>

Can you please fold this into the patch adding the new attribute?

Thanks,
Rafael

Re: [PATCH] Documentation: cpufreq: Additional interface for acpi-cpufreq

[Srinivas Pandruvada]

On Tue, 2016-03-01 at 00:48 +0100, Rafael J. Wysocki wrote:
> Hi,
> 
> On Mon, Feb 29, 2016 at 10:06 PM, Srinivas Pandruvada
> <srinivas.pandruvada@linux.intel.com> wrote:
> > Added new file for acpi-cpufreq driver, with explanation for
> > base_frequency.
> > 
> > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel
> > .com>
> 
> Can you please fold this into the patch adding the new attribute?
> 
I forgot to fold it and sent separately. Will send again.

Thanks,
Srinivas

> Thanks,
> Rafael
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