Add devicetree bindings for a virtual kvm cpufreq driver. Co-developed-by: Saravana Kannan <saravanak@xxxxxxxxxx> Signed-off-by: Saravana Kannan <saravanak@xxxxxxxxxx> Signed-off-by: David Dai <davidai@xxxxxxxxxx> --- .../bindings/cpufreq/cpufreq-virtual-kvm.yaml | 39 +++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/cpufreq/cpufreq-virtual-kvm.yaml diff --git a/Documentation/devicetree/bindings/cpufreq/cpufreq-virtual-kvm.yaml b/Documentation/devicetree/bindings/cpufreq/cpufreq-virtual-kvm.yaml new file mode 100644 index 000000000000..31e64558a7f1 --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/cpufreq-virtual-kvm.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/cpufreq/cpufreq-virtual-kvm.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Virtual KVM CPUFreq + +maintainers: + - David Dai <davidai@xxxxxxxxxx> + +description: | + + KVM CPUFreq is a virtualized driver in guest kernels that sends utilization + of its vCPUs as a hint to the host. The host uses hint to schedule vCPU + threads and select CPU frequency. It enables accurate Per-Entity Load + Tracking for tasks running in the guest by querying host CPU frequency + unless a virtualized FIE exists(Like AMUs). + +properties: + compatible: + const: virtual,kvm-cpufreq + +required: + - compatible + +additionalProperties: false + +examples: + - | + { + #address-cells = <2>; + #size-cells = <2>; + + cpufreq { + compatible = "virtual,kvm-cpufreq"; + }; + + }; -- 2.40.0.348.gf938b09366-goog
