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Date:   Sun, 22 Jan 2023 22:35:43 +0530
From:   Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>
To:     Robert Marko <robimarko@...il.com>
CC:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <srinivas.kandagatla@...aro.org>,
        <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-msm@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] arm64: dts: qcom: ipq8074: add QFPROM node


On 1/22/2023 10:29 PM, Robert Marko wrote:
> On Sun, 22 Jan 2023 at 17:57, Kathiravan Thirumoorthy
> <quic_kathirav@...cinc.com> wrote:
>>
>> On 1/21/2023 4:53 PM, Robert Marko wrote:
>>> IPQ8074 has efuses like other Qualcomm SoC-s that are required for
>>> determining various HW quirks which will be required later for CPR etc,
>>> so lets add the QFPROM node for start.
>>>
>>> Individidual fuses will be added as they are required.
>>>
>>> Signed-off-by: Robert Marko <robimarko@...il.com>
>>> ---
>>>    arch/arm64/boot/dts/qcom/ipq8074.dtsi | 7 +++++++
>>>    1 file changed, 7 insertions(+)
>>>
>>> diff --git a/arch/arm64/boot/dts/qcom/ipq8074.dtsi b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
>>> index 8eba586065a3..f29491f647fe 100644
>>> --- a/arch/arm64/boot/dts/qcom/ipq8074.dtsi
>>> +++ b/arch/arm64/boot/dts/qcom/ipq8074.dtsi
>>> @@ -301,6 +301,13 @@ mdio: mdio@...00 {
>>>                        status = "disabled";
>>>                };
>>>
>>> +             qfprom: efuse@...00 {
>>> +                     compatible = "qcom,ipq8074-qfprom", "qcom,qfprom";
>>> +                     reg = <0x000a4000 0x1000>;
>>
>>   From the HW document, I see the overall size of this region is 0x2000,
>> any reason to stick with 0x1000?
> Like always, I dont have access to docs and 0x1000 is all I could find
> downstream
> being used.
>
> Any chance you can share the regions inside of QFPROM, it would be great to use
> the ECC corrected one if available.

Sorry, What do you refer by "ECC corrected" here?

Thanks, Kathiravan T.


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

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