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

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Message-Id: <20221220192854.521647-8-bmasney@redhat.com>
Date:   Tue, 20 Dec 2022 14:28:54 -0500
From:   Brian Masney <bmasney@...hat.com>
To:     andersson@...nel.org, krzysztof.kozlowski+dt@...aro.org
Cc:     quic_shazhuss@...cinc.com, konrad.dybcio@...aro.org,
        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: [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 <bmasney@...hat.com>
---
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";
-- 
2.38.1