Squashed 'dts/upstream/' content from commit aaba2d45dc2a
git-subtree-dir: dts/upstream
git-subtree-split: aaba2d45dc2a1b3bbb710f2a3808ee1c9f340abe
diff --git a/Bindings/clock/lpc1850-creg-clk.txt b/Bindings/clock/lpc1850-creg-clk.txt
new file mode 100644
index 0000000..b6b2547
--- /dev/null
+++ b/Bindings/clock/lpc1850-creg-clk.txt
@@ -0,0 +1,52 @@
+* NXP LPC1850 CREG clocks
+
+The NXP LPC18xx/43xx CREG (Configuration Registers) block contains
+control registers for two low speed clocks. One of the clocks is a
+32 kHz oscillator driver with power up/down and clock gating. Next
+is a fixed divider that creates a 1 kHz clock from the 32 kHz osc.
+
+These clocks are used by the RTC and the Event Router peripherals.
+The 32 kHz can also be routed to other peripherals to enable low
+power modes.
+
+This binding uses the common clock binding:
+ Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible:
+ Should be "nxp,lpc1850-creg-clk"
+- #clock-cells:
+ Shall have value <1>.
+- clocks:
+ Shall contain a phandle to the fixed 32 kHz crystal.
+
+The creg-clk node must be a child of the creg syscon node.
+
+The following clocks are available from the clock node.
+
+Clock ID Name
+ 0 1 kHz clock
+ 1 32 kHz Oscillator
+
+Example:
+soc {
+ creg: syscon@40043000 {
+ compatible = "nxp,lpc1850-creg", "syscon", "simple-mfd";
+ reg = <0x40043000 0x1000>;
+
+ creg_clk: clock-controller {
+ compatible = "nxp,lpc1850-creg-clk";
+ clocks = <&xtal32>;
+ #clock-cells = <1>;
+ };
+
+ ...
+ };
+
+ rtc: rtc@40046000 {
+ ...
+ clocks = <&creg_clk 0>, <&ccu1 CLK_CPU_BUS>;
+ clock-names = "rtc", "reg";
+ ...
+ };
+};