[PATCH 2/4] dt-bindings: rtc: add binding doc for i.MX system controller RTC driver

[Anson Huang]

NXP i.MX8QXP is an ARMv8 SoC with a Cortex-M4 core inside as
system controller, the system controller is in charge of system
power, clock and secure RTC etc. management, Linux kernel
has to communicate with system controller via MU (message unit)
IPC to do RTC operation, this patch adds binding doc for i.MX
system controller RTC driver.

Signed-off-by: Anson Huang <Anson.Huang@xxxxxxx>
---
 Documentation/devicetree/bindings/rtc/rtc-imx-sc.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/rtc-imx-sc.txt

diff --git a/Documentation/devicetree/bindings/rtc/rtc-imx-sc.txt b/Documentation/devicetree/bindings/rtc/rtc-imx-sc.txt
new file mode 100644
index 0000000..d6e2353
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-imx-sc.txt
@@ -0,0 +1,10 @@
+* NXP i.MX System Controller Real Time Clock
+
+Required properties:
+- compatible: should be "nxp,imx8qxp-sc-rtc";
+
+Example:
+
+rtc: rtc {
+	compatible = "nxp,imx8qxp-sc-rtc";
+};
-- 
2.7.4