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Subject[PATCH v4 1/2] dt-bindings: timer: Add binding doc for nxp system counter timer
Date
From: Bai Ping <ping.bai@nxp.com>

Add the binding doc for nxp system counter timer module.

Signed-off-by: Bai Ping <ping.bai@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
change v1->v2
- remove the blank line at EOF
change v2->v3
- update the binding example based on the driver change
change v3->v4
- no change
---
.../bindings/timer/nxp,sysctr-timer.txt | 25 +++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt

diff --git a/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt b/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt
new file mode 100644
index 000000000000..d57659996d62
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/nxp,sysctr-timer.txt
@@ -0,0 +1,25 @@
+NXP System Counter Module(sys_ctr)
+
+The system counter(sys_ctr) is a programmable system counter which provides
+a shared time base to Cortex A15, A7, A53, A73, etc. it is intended for use in
+applications where the counter is always powered and support multiple,
+unrelated clocks. The compare frame inside can be used for timer purpose.
+
+Required properties:
+
+- compatible : should be "nxp,sysctr-timer"
+- reg : Specifies the base physical address and size of the comapre
+ frame and the counter control, read & compare.
+- interrupts : should be the first compare frames' interrupt
+- clocks : Specifies the counter clock.
+- clock-names: Specifies the clock's name of this module
+
+Example:
+
+ system_counter: timer@306a0000 {
+ compatible = "nxp,sysctr-timer";
+ reg = <0x306a0000 0x20000>;/* system-counter-rd & compare */
+ clocks = <&clk_8m>;
+ clock-names = "per";
+ interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>;
+ };
--
2.21.0
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