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authorHaojian Zhuang <haojian.zhuang@linaro.org>2013-03-13 13:05:34 +0800
committerRob Herring <rob.herring@calxeda.com>2013-04-11 15:11:22 -0500
commit69a517b2471bcd1c5a175aad82647c1e2c24f08b (patch)
tree9f05b37ca503f1de22238c8efb4c95ebd0d7482c /Documentation/devicetree
parent870e2928cf3368ca9b06bc925d0027b0a56bcd8e (diff)
devtree: add binding documentation for sp804
The sp804 binding is already in use by several platforms. This adds missing documentation for the binding and also extends the binding to handle some additional possible interrupt configurations. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/timer/arm,sp804.txt29
1 files changed, 29 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/timer/arm,sp804.txt b/Documentation/devicetree/bindings/timer/arm,sp804.txt
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+ARM sp804 Dual Timers
+---------------------------------------
+
+Required properties:
+- compatible: Should be "arm,sp804" & "arm,primecell"
+- interrupts: Should contain the list of Dual Timer interrupts. This is the
+ interrupt for timer 1 and timer 2. In the case of a single entry, it is
+ the combined interrupt or if "arm,sp804-has-irq" is present that
+ specifies which timer interrupt is connected.
+- reg: Should contain location and length for dual timer register.
+- clocks: clocks driving the dual timer hardware. This list should be 1 or 3
+ clocks. With 3 clocks, the order is timer0 clock, timer1 clock,
+ apb_pclk. A single clock can also be specified if the same clock is
+ used for all clock inputs.
+
+Optional properties:
+- arm,sp804-has-irq = <#>: In the case of only 1 timer irq line connected, this
+ specifies if the irq connection is for timer 1 or timer 2. A value of 1
+ or 2 should be used.
+
+Example:
+
+ timer0: timer@fc800000 {
+ compatible = "arm,sp804", "arm,primecell";
+ reg = <0xfc800000 0x1000>;
+ interrupts = <0 0 4>, <0 1 4>;
+ clocks = <&timclk1 &timclk2 &pclk>;
+ clock-names = "timer1", "timer2", "apb_pclk";
+ };

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