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-rw-r--r--Documentation/devicetree/bindings/rtc/dw-apb.txt19
1 files changed, 19 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/rtc/dw-apb.txt b/Documentation/devicetree/bindings/rtc/dw-apb.txt
index 93e2b0f..eb2327b 100644
--- a/Documentation/devicetree/bindings/rtc/dw-apb.txt
+++ b/Documentation/devicetree/bindings/rtc/dw-apb.txt
@@ -5,9 +5,20 @@ Required properties:
- reg: physical base address of the controller and length of memory mapped
region.
- interrupts: IRQ line for the timer.
+- either clocks+clock-names or clock-frequency properties
+
+Optional properties:
+- clocks : list of clock specifiers, corresponding to entries in
+ the clock-names property;
+- clock-names : should contain "timer" and "pclk" entries, matching entries
+ in the clocks property.
- clock-frequency: The frequency in HZ of the timer.
- clock-freq: For backwards compatibility with picoxcell
+If using the clock specifiers, the pclk clock is optional, as not all
+systems may use one.
+
+
Example:
timer1: timer@ffc09000 {
@@ -23,3 +34,11 @@ Example:
clock-frequency = <200000000>;
reg = <0xffd00000 0x1000>;
};
+
+ timer3: timer@ffe00000 {
+ compatible = "snps,dw-apb-timer-osc";
+ interrupts = <0 170 4>;
+ reg = <0xffe00000 0x1000>;
+ clocks = <&timer_clk>, <&timer_pclk>;
+ clock-names = "timer", "pclk";
+ };