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Diffstat (limited to 'Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt')
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diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt b/Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt new file mode 100644 index 000000000000..caff1a57436f --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-exynos5440.txt | |||
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1 | |||
2 | Exynos5440 cpufreq driver | ||
3 | ------------------- | ||
4 | |||
5 | Exynos5440 SoC cpufreq driver for CPU frequency scaling. | ||
6 | |||
7 | Required properties: | ||
8 | - interrupts: Interrupt to know the completion of cpu frequency change. | ||
9 | - operating-points: Table of frequencies and voltage CPU could be transitioned into, | ||
10 | in the decreasing order. Frequency should be in KHz units and voltage | ||
11 | should be in microvolts. | ||
12 | |||
13 | Optional properties: | ||
14 | - clock-latency: Clock monitor latency in microsecond. | ||
15 | |||
16 | All the required listed above must be defined under node cpufreq. | ||
17 | |||
18 | Example: | ||
19 | -------- | ||
20 | cpufreq@160000 { | ||
21 | compatible = "samsung,exynos5440-cpufreq"; | ||
22 | reg = <0x160000 0x1000>; | ||
23 | interrupts = <0 57 0>; | ||
24 | operating-points = < | ||
25 | 1000000 975000 | ||
26 | 800000 925000>; | ||
27 | clock-latency = <100000>; | ||
28 | }; | ||