diff options
Diffstat (limited to 'Documentation/devicetree/bindings/arm/msm')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/msm/timer.txt | 41 |
1 files changed, 20 insertions, 21 deletions
diff --git a/Documentation/devicetree/bindings/arm/msm/timer.txt b/Documentation/devicetree/bindings/arm/msm/timer.txt index 8c5907b9cae8..c6ef8f13dc7e 100644 --- a/Documentation/devicetree/bindings/arm/msm/timer.txt +++ b/Documentation/devicetree/bindings/arm/msm/timer.txt @@ -3,36 +3,35 @@ Properties: - compatible : Should at least contain "qcom,msm-timer". More specific - properties such as "qcom,msm-gpt" and "qcom,msm-dgt" specify a general - purpose timer and a debug timer respectively. + properties specify which subsystem the timers are paired with. -- interrupts : Interrupt indicating a match event. + "qcom,kpss-timer" - krait subsystem + "qcom,scss-timer" - scorpion subsystem -- reg : Specifies the base address of the timer registers. The second region - specifies an optional register used to configure the clock divider. +- interrupts : Interrupts for the the debug timer, the first general purpose + timer, and optionally a second general purpose timer in that + order. -- clock-frequency : The frequency of the timer in Hz. +- reg : Specifies the base address of the timer registers. + +- clock-frequency : The frequency of the debug timer and the general purpose + timer(s) in Hz in that order. Optional: - cpu-offset : per-cpu offset used when the timer is accessed without the - CPU remapping facilities. The offset is cpu-offset * cpu-nr. + CPU remapping facilities. The offset is + cpu-offset + (0x10000 * cpu-nr). Example: - timer@200a004 { - compatible = "qcom,msm-gpt", "qcom,msm-timer"; - interrupts = <1 2 0x301>; - reg = <0x0200a004 0x10>; - clock-frequency = <32768>; - cpu-offset = <0x40000>; - }; - - timer@200a024 { - compatible = "qcom,msm-dgt", "qcom,msm-timer"; - interrupts = <1 3 0x301>; - reg = <0x0200a024 0x10>, - <0x0200a034 0x4>; - clock-frequency = <6750000>; + timer@200a000 { + compatible = "qcom,scss-timer", "qcom,msm-timer"; + interrupts = <1 1 0x301>, + <1 2 0x301>, + <1 3 0x301>; + reg = <0x0200a000 0x100>; + clock-frequency = <19200000>, + <32768>; cpu-offset = <0x40000>; }; |