clocksource: armada-370-xp: Add detailed clock requirements in devicetree binding

Specifies the required clock inputs for each supported compatible.
Armada 370 requires a single clock phandle, and Armada XP requires
two clock phandles with clock-names "nbclk" and "fixed".

Cc: devicetree@vger.kernel.org
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Acked-by: Jason Cooper <jason@lakedaemon.net>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com>

1 files changed, 11 insertions, 2 deletions

diff --git a/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt b/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
index 4c453b22b2b4..f455182b1086 100644
--- a/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
+++ b/Documentation/devicetree/bindings/timer/marvell,armada-370-xp-timer.txt
@@ -9,8 +9,15 @@ Required properties:
 - reg: Should contain location and length for timers register. First
   pair for the Global Timer registers, second pair for the
   local/private timers.
-- clocks: clock driving the timer hardware, only required for
-  "marvell,armada-370-timer";
+
+Clocks required for compatible = "marvell,armada-370-timer":
+- clocks : Must contain a single entry describing the clock input
+
+Clocks required for compatible = "marvell,armada-xp-timer":
+- clocks : Must contain an entry for each entry in clock-names.
+- clock-names : Must include the following entries:
+  "nbclk" (L2/coherency fabric clock),
+  "fixed" (Reference 25 MHz fixed-clock).
 
 Examples:
 
@@ -29,4 +36,6 @@ Examples:
                 compatible = "marvell,armada-xp-timer";
                 reg = <0x20300 0x30>, <0x21040 0x30>;
                 interrupts = <37>, <38>, <39>, <40>, <5>, <6>;
+                clocks = <&coreclk 2>, <&refclk>;
+                clock-names = "nbclk", "fixed";
         };