diff mbox

[1/2] devicetree: add binding for generic mmio clocksource

Message ID 1443882287-29963-1-git-send-email-mans@mansr.com
State Superseded, archived
Headers show

Commit Message

Måns Rullgård Oct. 3, 2015, 2:24 p.m. UTC 
This adds a DT binding for a generic mmio clocksource as implemented
by clocksource_mmio_init().

Signed-off-by: Mans Rullgard <mans@mansr.com>
---
 .../devicetree/bindings/timer/clocksource-mmio.txt | 26 ++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/timer/clocksource-mmio.txt
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/timer/clocksource-mmio.txt b/Documentation/devicetree/bindings/timer/clocksource-mmio.txt
new file mode 100644
index 0000000..d8e93f6
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/clocksource-mmio.txt
@@ -0,0 +1,26 @@ 
+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
+
+Example:
+
+clocksource {
+	compatible = "clocksource-mmio";
+        reg = <0x10000 4>;
+        reg-io-width = <4>;
+        clocksource-bits = <32>;
+        clocksource-rating = <300>;
+        clocks = <&clk>;
+}