linux-kernel - Re: [PATCH v3 7/7] arm64: dts: qcom: sc8280xp: add rng device tree node

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Date:   Wed, 21 Dec 2022 21:44:05 +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 v3 7/7] arm64: dts: qcom: sc8280xp: add rng device tree
 node



On 20.12.2022 20:28, 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>
> ---
Reviewed-by: Konrad Dybcio <konrad.dybcio@...aro.org>

Konrad
> Changes from v2 to v3:
> - Correctly sort node by MMIO address
> 
> Patch 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..6c2cae83dac6 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> @@ -1602,6 +1602,13 @@ spi15: spi@...000 {
>  			};
>  		};
>  
> +		rng: rng@...3000 {
> +			compatible = "qcom,prng-ee";
> +			reg = <0 0x010d3000 0 0x1000>;
> +			clocks = <&rpmhcc RPMH_HWKM_CLK>;
> +			clock-names = "core";
> +		};
> +
>  		pcie4: pcie@...0000 {
>  			device_type = "pci";
>  			compatible = "qcom,pcie-sc8280xp";