linux-kernel - Re: [PATCH v1 2/2] arm64: dts: qcom: sa8775p: Add support for camss

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Message-ID: <7fd92093-3efc-4f24-967d-7e267162b26d@quicinc.com>
Date: Fri, 18 Apr 2025 12:58:53 +0530
From: Vikram Sharma <quic_vikramsa@...cinc.com>
To: Konrad Dybcio <konrad.dybcio@....qualcomm.com>, <rfoss@...nel.org>,
        <todor.too@...il.com>, <bryan.odonoghue@...aro.org>,
        <mchehab@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <andersson@...nel.org>,
        <konradybcio@...nel.org>, <hverkuil-cisco@...all.nl>,
        <cros-qcom-dts-watchers@...omium.org>, <catalin.marinas@....com>,
        <will@...nel.org>
CC: <linux-arm-kernel@...ts.infradead.org>, <linux-media@...r.kernel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        Suresh Vankadara <quic_svankada@...cinc.com>
Subject: Re: [PATCH v1 2/2] arm64: dts: qcom: sa8775p: Add support for camss


On 4/14/2025 7:18 PM, Konrad Dybcio wrote:
> On 2/10/25 4:56 PM, Vikram Sharma wrote:
>> Add changes to support the camera subsystem on the SA8775P.
>>
>> Co-developed-by: Suresh Vankadara <quic_svankada@...cinc.com>
>> Signed-off-by: Suresh Vankadara <quic_svankada@...cinc.com>
>> Signed-off-by: Vikram Sharma <quic_vikramsa@...cinc.com>
>> ---
> [...]
>
>> +			interrupts = <GIC_SPI 565 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 564 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 468 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 359 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 759 IRQ_TYPE_EDGE_RISING>,
> 760> +				     <GIC_SPI 758 IRQ_TYPE_EDGE_RISING>,

Hi Konrad,

We cross checked internal documents to confirm IRQ number for 
csid_lite2/3 and vfe_lite2/3
Calculation for IRQ number is done with respect to vector number as
irq_num = (vector - 32).
csid_lite2 vector -> 791
csid_lite3 vector -> 790
vfe_lite2  vector -> 793
vfe_lite3  vector -> 792

thus irqs are as
csid_lite2 -> 759
csid_lite3 -> 758
vfe_lite2  -> 761
vfe_lite3  -> 760

Please let me know if this looks fine to you?

>
> 759
>
>> +				     <GIC_SPI 604 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 477 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 478 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 479 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 448 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 545 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 546 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 547 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 465 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 467 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 469 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 360 IRQ_TYPE_EDGE_RISING>,
>> +				     <GIC_SPI 761 IRQ_TYPE_EDGE_RISING>,
> 762
>
>> +				     <GIC_SPI 760 IRQ_TYPE_EDGE_RISING>,
> 761
>
> Konrad

Best Regards,

Vikram