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authorLinus Walleij <linus.walleij@linaro.org>2013-04-08 10:50:11 +0200
committerLinus Walleij <linus.walleij@linaro.org>2013-05-31 11:24:44 +0200
commit5a5056cccfb0479f52a0464a6b371b441c84aa0c (patch)
tree38c7a3edd27425a05eb4bfecfe9d5ef144f699d8 /Documentation/devicetree/bindings/timer
parent3c96d8ea8101936959dede664ac7b97b30fafbe8 (diff)
ARM: u300: device tree support for the timer
This adds device tree support for the U300 timer, by making the memory base offset and IRQ dynamically assigned, then optionally looking them up from the device tree. Since the timer needs to be registered before any platform devices are created, we will go into the device tree and look up the "/timer@c0014000" node and read our base address and IRQ from there. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/timer')
-rw-r--r--Documentation/devicetree/bindings/timer/stericsson-u300-apptimer.txt18
1 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/timer/stericsson-u300-apptimer.txt b/Documentation/devicetree/bindings/timer/stericsson-u300-apptimer.txt
new file mode 100644
index 000000000000..9499bc8ee9e3
--- /dev/null
+++ b/Documentation/devicetree/bindings/timer/stericsson-u300-apptimer.txt
@@ -0,0 +1,18 @@
+ST-Ericsson U300 apptimer
+
+Required properties:
+
+- compatible : should be "stericsson,u300-apptimer"
+- reg : Specifies base physical address and size of the registers.
+- interrupts : A list of 4 interrupts; one for each subtimer. These
+ are, in order: OS (operating system), DD (device driver) both
+ adopted for EPOC/Symbian with two specific IRQs for these tasks,
+ then GP1 and GP2, which are general-purpose timers.
+
+Example:
+
+timer {
+ compatible = "stericsson,u300-apptimer";
+ reg = <0xc0014000 0x1000>;
+ interrupts = <24 25 26 27>;
+};

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