Patchwork [PATCHv5,02/15] Documentation: dt: add the omap hwspinlock bindings document

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Submitter Anna, Suman
Date May 1, 2014, 12:34 a.m.
Message ID <1398904476-26200-3-git-send-email-s-anna@ti.com>
Download mbox | patch
Permalink /patch/344375/
State New
Headers show

Comments

Anna, Suman - May 1, 2014, 12:34 a.m.
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>
---
 .../devicetree/bindings/hwlock/omap-hwspinlock.txt | 24 ++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt

Patch

diff --git a/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
new file mode 100644
index 0000000..568eae2
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
@@ -0,0 +1,24 @@ 
+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.
+
+
+Example:
+
+/* OMAP4 */
+hwspinlock: spinlock@4a0f6000 {
+	compatible = "ti,omap4-hwspinlock";
+	reg = <0x4a0f6000 0x1000>;
+	ti,hwmods = "spinlock";
+	#hwlock-cells = <1>;
+};