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

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Message-ID: <1541760402-17274-1-git-send-email-ping.bai@nxp.com>
Date:   Fri, 9 Nov 2018 10:43:05 +0000
From:   Jacky Bai <ping.bai@....com>
To:     "daniel.lezcano@...aro.org" <daniel.lezcano@...aro.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "A.s. Dong" <aisheng.dong@....com>
CC:     dl-linux-imx <linux-imx@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: [PATCH 1/2] Doc: bindings: Add binding doc for nxp system counter
 timer

Add the binding doc for nxp system counter timer module.

Signed-off-by: Bai Ping <ping.bai@....com>
---
 .../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@...a0000 {
+		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