From: jon-hunter@ti•com (Jon Hunter)
To: linux-arm-kernel@lists•infradead.org
Subject: [RFC 2/5] ARM: dts: Add Cross Trigger Interface binding
Date: Thu, 13 Dec 2012 13:21:30 -0600 [thread overview]
Message-ID: <50CA2ABA.1050600@ti.com> (raw)
In-Reply-To: <20121213174139.GA12946@mudshark.cambridge.arm.com>
On 12/13/2012 11:41 AM, Will Deacon wrote:
> On Wed, Dec 12, 2012 at 09:43:05PM +0000, Jon Hunter wrote:
>> Adds a device-tree binding for the ARM Cross Trigger Interface (CTI).
>> The ARM Cross Trigger Interface provides a way to route events between
>> processor modules. For example, on OMAP4430 we use the CTI module to
>> route PMU events to the GIC interrupt module.
>>
>> Signed-off-by: Jon Hunter <jon-hunter@ti•com>
>> ---
>> Documentation/devicetree/bindings/arm/cti.txt | 32 +++++++++++++++++++++++++
>> 1 file changed, 32 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/arm/cti.txt
>>
>> diff --git a/Documentation/devicetree/bindings/arm/cti.txt b/Documentation/devicetree/bindings/arm/cti.txt
>> new file mode 100644
>> index 0000000..4a0e2d3
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/arm/cti.txt
>> @@ -0,0 +1,32 @@
>> +* ARM Cross Trigger Interface (CTI)
>> +
>> +The ARM Cross Trigger Interface provides a way to route events between
>> +processor modules. For example, debug events from one processor can be
>> +broadcasted to other processors. The events that can be routed between
>> +processors are specific to the device.
>> +
>> +Required properties:
>> +
>> +- compatible: Should be "arm,primecell".
>> +- interrupts: Interrupt associated with CTI module.
>> +- reg: Contains timer register address range (base
>> + address and length).
>> +- arm,cti-name: A unique name for the CTI module, that will be
>> + used when requesting the CTI module instance.
>> +
>> +
>> +Optional properties:
>> +
>> +- arm-primecell-periphid: Primecell peripheral ID associated with CTI
>> + module.
>
> For multi-cluster systems, I wouldn't be surprised to see multiple CTI
> instances, each with different CPU affinities. Can we include an affinity
> property following Mark's proposed binding?
>
> http://lists.infradead.org/pipermail/linux-arm-kernel/2012-December/137290.html
Yes I can take a look. Would something like that be applicable to pmu as
well or is that unlikely to have different affinities? I am just
wondering if there is something that we should implement in general for
the various primecell components.
Cheers
Jon
next prev parent reply other threads:[~2012-12-13 19:21 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-12 21:43 [RFC 0/5] ARM: Add Cross Trigger Interface driver Jon Hunter
2012-12-12 21:43 ` [RFC 1/5] ARM: CORESIGHT: Add generic lock/unlock helpers Jon Hunter
2012-12-13 14:58 ` Will Deacon
2012-12-13 19:18 ` Jon Hunter
2012-12-13 19:36 ` Jean Pihet
2012-12-12 21:43 ` [RFC 2/5] ARM: dts: Add Cross Trigger Interface binding Jon Hunter
2012-12-12 22:12 ` Rob Herring
2012-12-12 23:23 ` Jon Hunter
2012-12-14 19:53 ` Rob Herring
2012-12-13 17:41 ` Will Deacon
2012-12-13 19:21 ` Jon Hunter [this message]
2012-12-17 16:20 ` Mark Rutland
2012-12-17 16:30 ` Jon Hunter
2012-12-12 21:43 ` [RFC 3/5] ARM: CTI: Convert CTI helpers to AMBA bus driver Jon Hunter
2012-12-13 15:08 ` Will Deacon
2012-12-13 19:35 ` Jon Hunter
2012-12-21 22:27 ` Pratik Patel
2012-12-21 22:35 ` Pratik Patel
2013-01-02 19:13 ` Jon Hunter
2013-01-02 19:23 ` Jon Hunter
2013-01-03 18:47 ` Pratik Patel
2012-12-12 21:43 ` [RFC 4/5] ARM: dts: OMAP4: Add CTI nodes Jon Hunter
2012-12-12 21:43 ` [RFC 5/5] ARM: OMAP4: Add AMBA APB Clock Jon Hunter
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