aboutsummaryrefslogtreecommitdiff
path: root/Documentation/devicetree/bindings/arm/msm/timer.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/arm/msm/timer.txt')
-rw-r--r--Documentation/devicetree/bindings/arm/msm/timer.txt38
1 files changed, 38 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/msm/timer.txt b/Documentation/devicetree/bindings/arm/msm/timer.txt
new file mode 100644
index 00000000000..8c5907b9cae
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/msm/timer.txt
@@ -0,0 +1,38 @@
+* MSM Timer
+
+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.
+
+- interrupts : Interrupt indicating a match event.
+
+- reg : Specifies the base address of the timer registers. The second region
+ specifies an optional register used to configure the clock divider.
+
+- clock-frequency : The frequency of the timer in Hz.
+
+Optional:
+
+- cpu-offset : per-cpu offset used when the timer is accessed without the
+ CPU remapping facilities. The offset is cpu-offset * 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>;
+ cpu-offset = <0x40000>;
+ };