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authorRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-02-20 14:23:40 +0100
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2017-02-20 14:23:40 +0100
commit41ef3d1df037a429703db503e98fa948ee34b895 (patch)
tree611d15d08b45efd9c8c9ea0ae1aa8b4498b1ba7e /Documentation
parentad7eec4244a8c6b53a0d38d6fd674e9d2c92897f (diff)
parent23b017a623a0bd19c24e6c1c41fe587c644e9dbc (diff)
downloadlinux-41ef3d1df037a429703db503e98fa948ee34b895.tar.bz2
Merge branch 'pm-devfreq'
* pm-devfreq: PM / devfreq: Modify the device name as devfreq(X) for sysfs PM / devfreq: Simplify the sysfs name of devfreq-event device PM / devfreq: Remove unnecessary separate _remove_devfreq() PM / devfreq: Fix wrong trans_stat of passive devfreq device PM / devfreq: Fix available_governor sysfs PM / devfreq: exynos-ppmu: Show the registred device for ppmu device PM / devfreq: Fix the wrong description for userspace governor PM / devfreq: Fix the checkpatch warnings PM / devfreq: exynos-bus: Print the real clock rate of bus PM / devfreq: exynos-ppmu: Use the regmap interface to handle the registers PM / devfreq: exynos-bus: Add the detailed correlation for Exynos5433 PM / devfreq: Don't delete sysfs group twice
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-class-devfreq-event25
-rw-r--r--Documentation/devicetree/bindings/devfreq/exynos-bus.txt14
2 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-devfreq-event b/Documentation/ABI/testing/sysfs-class-devfreq-event
new file mode 100644
index 000000000000..ceaf0f686d4a
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-devfreq-event
@@ -0,0 +1,25 @@
+What: /sys/class/devfreq-event/event(x)/
+Date: January 2017
+Contact: Chanwoo Choi <cw00.choi@samsung.com>
+Description:
+ Provide a place in sysfs for the devfreq-event objects.
+ This allows accessing various devfreq-event specific variables.
+ The name of devfreq-event object denoted as 'event(x)' which
+ includes the unique number of 'x' for each devfreq-event object.
+
+What: /sys/class/devfreq-event/event(x)/name
+Date: January 2017
+Contact: Chanwoo Choi <cw00.choi@samsung.com>
+Description:
+ The /sys/class/devfreq-event/event(x)/name attribute contains
+ the name of the devfreq-event object. This attribute is
+ read-only.
+
+What: /sys/class/devfreq-event/event(x)/enable_count
+Date: January 2017
+Contact: Chanwoo Choi <cw00.choi@samsung.com>
+Description:
+ The /sys/class/devfreq-event/event(x)/enable_count attribute
+ contains the reference count to enable the devfreq-event
+ object. If the device is enabled, the value of attribute is
+ greater than zero.
diff --git a/Documentation/devicetree/bindings/devfreq/exynos-bus.txt b/Documentation/devicetree/bindings/devfreq/exynos-bus.txt
index d3ec8e676b6b..d085ef90d27c 100644
--- a/Documentation/devicetree/bindings/devfreq/exynos-bus.txt
+++ b/Documentation/devicetree/bindings/devfreq/exynos-bus.txt
@@ -123,6 +123,20 @@ Detailed correlation between sub-blocks and power line according to Exynos SoC:
|--- FSYS
|--- FSYS2
+- In case of Exynos5433, there is VDD_INT power line as following:
+ VDD_INT |--- G2D (parent device)
+ |--- MSCL
+ |--- GSCL
+ |--- JPEG
+ |--- MFC
+ |--- HEVC
+ |--- BUS0
+ |--- BUS1
+ |--- BUS2
+ |--- PERIS (Fixed clock rate)
+ |--- PERIC (Fixed clock rate)
+ |--- FSYS (Fixed clock rate)
+
Example1:
Show the AXI buses of Exynos3250 SoC. Exynos3250 divides the buses to
power line (regulator). The MIF (Memory Interface) AXI bus is used to