On Sep 3, 2013, at 12:52 PM, Suman Anna wrote:
> HwSpinlock IP is present only on OMAP4 and other newer SoCs,
> which are all device-tree boot only. This patch adds the
> base support for parsing the DT nodes, and removes the code
> dealing with the traditional platform device instantiation.
>
> Signed-off-by: Suman Anna <s-anna@xxxxxx>
> ---
> .../devicetree/bindings/hwlock/omap-hwspinlock.txt | 28 ++++++++++
> arch/arm/mach-omap2/Makefile | 3 --
> arch/arm/mach-omap2/hwspinlock.c | 60 ----------------------
> drivers/hwspinlock/omap_hwspinlock.c | 21 ++++++--
> 4 files changed, 45 insertions(+), 67 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
> delete mode 100644 arch/arm/mach-omap2/hwspinlock.c
>
> diff --git a/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
> new file mode 100644
> index 0000000..adfb8ad
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwlock/omap-hwspinlock.txt
> @@ -0,0 +1,28 @@
> +OMAP4+ HwSpinlock Driver
> +
> +Required properties:
> +- compatible: Currently supports only "ti,omap4-hwspinlock" for
> + OMAP44xx, OMAP54xx, AM33xx, AM43xx, DRA7xx SoCs
> +- reg: Contains the hwspinlock register address range (base
> + address and length)
> +- ti,hwmods: Name of the hwmod associated with the hwspinlock device
> +
> +Optional properties:
> +- base_id: Base Id for the locks for a particular hwspinlock
> + device. If not mentioned, a default value of 0 is used.
> + This property is mandatory ONLY if a SoC has several
> + hwspinlock devices. There are currently no such OMAP
> + SoCs.
Should this be ti,base_id ? [ I know its kinda generic in its intent for any SoC w/multiple blocks ]
> +
> + See documentation on struct hwspinlock_pdata in
> + linux/hwspinlock.h for more details.
> +
> +
> +Example:
> +
> +/* OMAP4 */
> +hwspinlock: spinlock@4a0f6000 {
> + compatible = "ti,omap4-hwspinlock";
> + reg = <0x4a0f6000 0x1000>;
> + ti,hwmods = "spinlock";
> +};
[ snip ]
- k
--
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