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@redhat.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230103182229.37169-11-bmasney@redhat.com

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index e9a0ff5..70d0da0 100644 (file)
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -1639,6 +1639,13 @@
                        };
                };
 
+               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";