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authorSuman Anna <s-anna@ti.com>2015-03-04 20:01:15 -0600
committerOhad Ben-Cohen <ohad@wizery.com>2015-05-02 09:56:16 +0300
commit67140ed1c9d518565e6e2b86ba761652eb9bf3c4 (patch)
treeeea351d073d0db1c8b04ffe7a7b01eea12feace8 /Documentation/devicetree
parentfb7737e949e31d8a71acee6bbb670f32dbd2a2c0 (diff)
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Documentation: dt: add the omap hwspinlock bindings document
HwSpinlock IP is present only on OMAP4 and other newer SoCs, which are all device-tree boot only. This patch adds the DT bindings information for OMAP hwspinlock module. Cc: Rob Herring <robh+dt@kernel.org> Signed-off-by: Suman Anna <s-anna@ti.com> Acked-by: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt26
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diff --git a/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
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+OMAP4+ HwSpinlock Driver
+========================
+
+Required properties:
+- compatible: Should be "ti,omap4-hwspinlock" for
+ OMAP44xx, OMAP54xx, AM33xx, AM43xx, DRA7xx SoCs
+- reg: Contains the hwspinlock module register address space
+ (base address and length)
+- ti,hwmods: Name of the hwmod associated with the hwspinlock device
+- #hwlock-cells: Should be 1. The OMAP hwspinlock users will use a
+ 0-indexed relative hwlock number as the argument
+ specifier value for requesting a specific hwspinlock
+ within a hwspinlock bank.
+
+Please look at the generic hwlock binding for usage information for consumers,
+"Documentation/devicetree/bindings/hwlock/hwlock.txt"
+
+Example:
+
+/* OMAP4 */
+hwspinlock: spinlock@4a0f6000 {
+ compatible = "ti,omap4-hwspinlock";
+ reg = <0x4a0f6000 0x1000>;
+ ti,hwmods = "spinlock";
+ #hwlock-cells = <1>;
+};
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