2022-12-20 19:33:03

by Brian Masney

Subject: [PATCH v3 7/7] arm64: dts: qcom: sc8280xp: add rng device tree node

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 <[email protected]>
---
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@a9c000 {
};
};

+ rng: rng@10d3000 {
+ compatible = "qcom,prng-ee";
+ reg = <0 0x010d3000 0 0x1000>;
+ clocks = <&rpmhcc RPMH_HWKM_CLK>;
+ clock-names = "core";
+ };
+
pcie4: pcie@1c00000 {
device_type = "pci";
compatible = "qcom,pcie-sc8280xp";
--
2.38.1

2022-12-21 21:27:41

by Konrad Dybcio

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 <[email protected]>
> ---
Reviewed-by: Konrad Dybcio <[email protected]>

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@a9c000 {
> };
> };
>
> + rng: rng@10d3000 {
> + compatible = "qcom,prng-ee";
> + reg = <0 0x010d3000 0 0x1000>;
> + clocks = <&rpmhcc RPMH_HWKM_CLK>;
> + clock-names = "core";
> + };
> +
> pcie4: pcie@1c00000 {
> device_type = "pci";
> compatible = "qcom,pcie-sc8280xp";