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Message-ID: <90437b6d-0543-80c5-ea27-238e3aafc6ea@linaro.org>
Date:   Thu, 15 Dec 2022 13:56:18 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Brian Masney <bmasney@...hat.com>, andersson@...nel.org,
        krzysztof.kozlowski+dt@...aro.org
Cc:     quic_shazhuss@...cinc.com, robh+dt@...nel.org,
        johan+linaro@...nel.org, linux-arm-msm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        ahalaney@...hat.com, echanude@...hat.com
Subject: Re: [PATCH v2 7/7] arm64: dts: qcom: sc8280xp: add rng device tree
 node



On 14.12.2022 18:11, Brian Masney wrote:
> Add the necessary device tree node for qcom,prng-ee so we can use the
> hardware random number generator. This functionality was tested on a
> SA8540p automotive development board using kcapi-rng from libkcapi.
> 
> Signed-off-by: Brian Masney <bmasney@...hat.com>
> ---
Nodes with MMIO addresses should be sorted address-wise, so
this one should come between qup1 and pcie4.

Konrad
> This is a new patch that's introduced in v2.
> 
>  arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> index 4591d411f5fb..67765975361b 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> @@ -2811,6 +2811,13 @@ tlmm: pinctrl@...0000 {
>  			gpio-ranges = <&tlmm 0 0 230>;
>  		};
>  
> +		rng: rng@...3000 {
> +			compatible = "qcom,prng-ee";
> +			reg = <0 0x010d3000 0 0x1000>;
> +			clocks = <&rpmhcc RPMH_HWKM_CLK>;
> +			clock-names = "core";
> +		};
> +
>  		apps_smmu: iommu@...00000 {
>  			compatible = "qcom,sc8280xp-smmu-500", "arm,mmu-500";
>  			reg = <0 0x15000000 0 0x100000>;

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