diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-devfreq-event | 25 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/devfreq/exynos-bus.txt | 14 |
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 |