Documentation: dt: kona-timer: Add clocks property

The frequency for the Kona timer can either be specified through the
device tree or determined by checking the rate of the clock specified
in the device tree.  Update the documentation to reflect both ways.

Signed-off-by: Tim Kryger <tim.kryger@linaro.org>
Reviewed-by: Matt Porter <matt.porter@linaro.org>
Signed-off-by: Christian Daudt <bcm@fixthebug.org>

diff --git a/Documentation/devicetree/bindings/arm/bcm/kona-timer.txt b/Documentation/devicetree/bindings/arm/bcm/kona-timer.txt
index 17d88b233d1bce30a6d0f6a1752181936dc2a07e..39adf54b4388b919bc7ed465b93e4200e86000cc 100644 (file)
--- a/Documentation/devicetree/bindings/arm/bcm/kona-timer.txt
+++ b/Documentation/devicetree/bindings/arm/bcm/kona-timer.txt
@@ -8,13 +8,18 @@ Required properties:
 - DEPRECATED: compatible : "bcm,kona-timer"
 - reg : Register range for the timer
 - interrupts : interrupt for the timer
+- clocks: phandle + clock specifier pair of the external clock
 - clock-frequency: frequency that the clock operates
 
+Only one of clocks or clock-frequency should be specified.
+
+Refer to clocks/clock-bindings.txt for generic clock consumer properties.
+
 Example:
        timer@35006000 {
                compatible = "brcm,kona-timer";
                reg = <0x35006000 0x1000>;
                interrupts = <0x0 7 0x4>;
-               clock-frequency = <32768>;
+               clocks = <&hub_timer_clk>;
        };