diff --git a/Documentation/devicetree/bindings/cpufreq/qcom,shikra-epss.yaml b/Documentation/devicetree/bindings/cpufreq/qcom,shikra-epss.yaml new file mode 100644 index 000000000000..1a3105e86980 --- /dev/null +++ b/Documentation/devicetree/bindings/cpufreq/qcom,shikra-epss.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/cpufreq/qcom,shikra-epss.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Qualcomm Shikra SoC EPSS + +maintainers: + - Imran Shaik + - Taniya Das + +description: | + EPSS is a hardware engine used by some Qualcomm SoCs to manage + frequency in hardware. It is capable of controlling frequency for + multiple clusters. + + The Qualcomm Shikra SoC EPSS supports up to 12 frequency lookup table + (LUT) entries. + +properties: + compatible: + enum: + - qcom,shikra-epss + + reg: + items: + - description: Frequency domain 0 register region + - description: Frequency domain 1 register region + + reg-names: + items: + - const: freq-domain0 + - const: freq-domain1 + + clocks: + items: + - description: XO Clock + - description: GPLL0 Clock + + clock-names: + items: + - const: xo + - const: alternate + + interrupts: + items: + - description: IRQ line for DCVSH 0 + - description: IRQ line for DCVSH 1 + + interrupt-names: + items: + - const: dcvsh-irq-0 + - const: dcvsh-irq-1 + + '#freq-domain-cells': + const: 1 + + '#clock-cells': + const: 1 + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + - interrupt-names + - '#freq-domain-cells' + - '#clock-cells' + +additionalProperties: false + +examples: + - | + #include + #include + + soc { + #address-cells = <1>; + #size-cells = <1>; + + cpufreq@fd91000 { + compatible = "qcom,shikra-epss"; + reg = <0x0fd91000 0x1000>, <0x0fd92000 0x1000>; + reg-names = "freq-domain0", "freq-domain1"; + clocks = <&rpmcc RPM_SMD_XO_CLK_SRC>, <&gpll0>; + clock-names = "xo", "alternate"; + interrupts = , + ; + interrupt-names = "dcvsh-irq-0", "dcvsh-irq-1"; + #freq-domain-cells = <1>; + #clock-cells = <1>; + }; + }; +...