This adds a DT binding for a generic mmio clocksource as implemented
by clocksource_mmio_init().
Signed-off-by: Mans Rullgard <mans@xxxxxxxxx>
---
Changed in v2:
- added sched_clock support
---
.../devicetree/bindings/timer/clocksource-mmio.txt | 28 ++++++++++++++++++++++
1 file changed, 28 insertions(+)
create mode 100644 Documentation/devicetree/bindings/timer/clocksource-mmio.txt
diff --git a/Documentation/devicetree/bindings/timer/clocksource-mmio.txt b/Documentation/devicetree/bindings/timer/clocksource-mmio.txt
new file mode 100644
index 0000000..cfb3601
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/clocksource-mmio.txt
@@ -0,0 +1,28 @@
+Generic MMIO clocksource
+
+Required properties:
+
+- compatible: should be "clocksource-mmio"
+- reg: the physical address of the counter register
+- reg-io-width: size of counter register in bytes, should be 2 or 4
+- clocks: phandle to the source clock
+- clocksource-bits: number of valid bits
+- clocksource-rating: rating of the clocksource
+
+Optional properties:
+
+- clocksource-counts-down: indicates that counter counts down
+- label: name of the clocksource
+- linux,sched-clock: boolean, register clocksource as sched_clock
+
+Example:
+
+clocksource {
+ compatible = "clocksource-mmio";
+ reg = <0x10000 4>;
+ reg-io-width = <4>;
+ clocksource-bits = <32>;
+ clocksource-rating = <300>;
+ clocks = <&clk>;
+ linux,sched_clock;
+}
--
2.5.3
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