[PATCH v7 2/4] Documentation: dt: add the omap hwspinlock bindings document
From: Suman Anna <hidden>
Date: 2015-01-14 20:58:55
Also in:
linux-devicetree, linux-omap, lkml
Subsystem:
hardware spinlock core, open firmware and flattened device tree bindings, the rest · Maintainers:
Bjorn Andersson, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- v7: Added information about hwlock-base-id and updated example to use it .../devicetree/bindings/hwlock/omap-hwspinlock.txt | 28 ++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
diff --git a/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
new file mode 100644
index 000000000000..935173ec6b58
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt@@ -0,0 +1,28 @@ +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-base-id: Should be 0 for the first IP block instance, or a proper + positive value for any subsequent instance (if present) + of the IP block. +- #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 at 4a0f6000 { + compatible = "ti,omap4-hwspinlock"; + reg = <0x4a0f6000 0x1000>; + ti,hwmods = "spinlock"; + hwlock-base-id = <0>; + #hwlock-cells = <1>; +};
--
2.2.1