linux-kernel - Re: [PATCH RFC 2/4] dt-bindings/interrupt-controller: pdc: descibe PDC device binding

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Message-ID: <20180123184620.GA22228@codeaurora.org>
Date:   Tue, 23 Jan 2018 18:46:20 +0000
From:   Lina Iyer <ilina@...eaurora.org>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     tglx@...utronix.de, jason@...edaemon.net, marc.zyngier@....com,
        linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        sboyd@...eaurora.org, rnayak@...eaurora.org,
        asathyak@...eaurora.org, devicetree@...r.kernel.org
Subject: Re: [PATCH RFC 2/4] dt-bindings/interrupt-controller: pdc: descibe
 PDC device binding

On Tue, Jan 23 2018 at 18:10 +0000, Sudeep Holla wrote:
>
>
>On 23/01/18 17:56, Lina Iyer wrote:
>> From: Archana Sathyakumar <asathyak@...eaurora.org>
>>
>> Add device binding documentation for the PDC Interrupt controller on
>> QCOM SoC's like the SDM845. The interrupt-controller can be used to
>> sense edge low interrupts and wakeup interrupts when the GIC is
>> non-operational.
>>
>> Cc: devicetree@...r.kernel.org
>> Signed-off-by: Archana Sathyakumar <asathyak@...eaurora.org>
>> Signed-off-by: Lina Iyer <ilina@...eaurora.org>
>> ---
>>  .../bindings/interrupt-controller/qcom,pdc.txt     | 55 ++++++++++++++++++++++
>>  1 file changed, 55 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/interrupt-controller/qcom,pdc.txt
>>
>> diff --git a/Documentation/devicetree/bindings/interrupt-controller/qcom,pdc.txt b/Documentation/devicetree/bindings/interrupt-controller/qcom,pdc.txt
>> new file mode 100644
>> index 000000000000..c4592bbf678d
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/interrupt-controller/qcom,pdc.txt
>> @@ -0,0 +1,55 @@
>> +PDC interrupt controller
>> +
>> +Qualcomm Technologies Inc. SoCs based on the RPM Hardened archicture have a
>> +Power Domain Controller (PDC) that is on always-on domain. In addition to
>> +providing power control for the power domains, the hardware also has an
>> +interrupt controller that can be used to help detect edge low interrupts as
>> +well detect interrupts when the GIC is non-operational.
>> +
>> +GIC is parent interrupt controller at the highest level. Platform interrupt
>> +controller PDC is next in hierarchy, followed by others.
>
>> This driver only configures the interrupts, does not handle them.
>
>Not sure if the above statement belongs to the binding.
>
Will fix.

Thanks,
Lina