[PATCH 1/2] Doc: bindings: Add binding doc for nxp system counter timer

From: Jacky Bai
Date: Fri Nov 09 2018 - 05:43:13 EST


Add the binding doc for nxp system counter timer module.

Signed-off-by: Bai Ping <ping.bai@xxxxxxx>
---
.../devicetree/bindings/timer/nxp,sysctr_timer.txt | 28 ++++++++++++++++++++++
1 file changed, 28 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 0000000..6c0aeed
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/nxp,sysctr_timer.txt
@@ -0,0 +1,28 @@
+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.
+
+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 compare frames' interrupt
+- clock-frequency : Specifies the counter clock frequency.
+
+Example:
+
+ system_counter: timer@306a0000 {
+ compatible = "nxp,sysctr-timer";
+ reg = <0x0 0x306a0000 0x0 0x10000>, /* system-counter-rd base */
+ <0x0 0x306b0000 0x0 0x10000>, /* system-counter-cmp base */
+ <0x0 0x306c0000 0x0 0x10000>; /* system-counter-ctrl base */
+ clock-frequency = <8000000>;
+ interrupts = <GIC_SPI 47 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
+ };
+
+
--
1.9.1