linux-kernel - Re: [PATCH 2/4] arm64: dts: qcom: ipq5332: add QFPROM node

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Message-ID: <bf0cef36-8286-df96-8c58-82aa6d1a02ad@quicinc.com>
Date:   Fri, 26 May 2023 15:54:43 +0530
From:   Kathiravan T <quic_kathirav@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/4] arm64: dts: qcom: ipq5332: add QFPROM node


On 5/26/2023 2:49 PM, Konrad Dybcio wrote:
>
> On 26.05.2023 09:04, Kathiravan T wrote:
>> IPQ5332 has efuse region to determine the various HW quirks. Lets
>> add the initial support and the individual fuses will be added as they
>> are required.
>>
>> Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
>> ---
>>   arch/arm64/boot/dts/qcom/ipq5332.dtsi | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
>> index af4d97143bcf..c2d6cc65a323 100644
>> --- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
>> +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
>> @@ -135,6 +135,13 @@
>>   		#size-cells = <1>;
>>   		ranges = <0 0 0 0xffffffff>;
>>   
>> +		qfprom: efuse@...00 {
>> +			compatible = "qcom,ipq5332-qfprom", "qcom,qfprom";
>> +			reg = <0x000a4000 0x721>;
> That's an odd size. Are you sure this is how long the corrected region is?


Yes, As per the HW document, this is the size.


>
> Konrad
>> +			#address-cells = <1>;
>> +			#size-cells = <1>;
>> +		};
>> +
>>   		rng: rng@...00 {
>>   			compatible = "qcom,prng-ee";
>>   			reg = <0x000e3000 0x1000>;