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Date:   Sun, 22 Jan 2023 17:59:24 +0100
From:   Robert Marko <robimarko@...il.com>
To:     Kathiravan Thirumoorthy <quic_kathirav@...cinc.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 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.

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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