Add the bindings for the CPR3 driver to the documentation. Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxxx> Reviewed-by: Rob Herring <robh@xxxxxxxxxx> --- .../bindings/soc/qcom/qcom,cpr3.yaml | 241 ++++++++++++++++++ 1 file changed, 241 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/qcom/qcom,cpr3.yaml diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,cpr3.yaml b/Documentation/devicetree/bindings/soc/qcom/qcom,cpr3.yaml new file mode 100644 index 000000000000..e2753740c86b --- /dev/null +++ b/Documentation/devicetree/bindings/soc/qcom/qcom,cpr3.yaml @@ -0,0 +1,241 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/soc/qcom/qcom,cpr3.yaml#"; +$schema: "http://devicetree.org/meta-schemas/core.yaml#"; + +title: Qualcomm Core Power Reduction v3/v4/Hardened (CPR3, CPR4, CPRh) + +description: | + CPR (Core Power Reduction) is a technology to reduce core power on a CPU + or other device. Each OPP of a device corresponds to a "corner" that has + a range of valid voltages for a particular frequency. While the device is + running at a particular frequency, CPR monitors dynamic factors such as + temperature, etc. and suggests or, in the CPR-Hardened case performs, + adjustments to the voltage to save power and meet silicon characteristic + requirements. + +maintainers: + - AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxxx> + +properties: + compatible: + oneOf: + - description: CPRv3 controller + items: + - const: qcom,cpr3 + - description: CPRv4 controller + items: + - const: qcom,cpr4 + - description: CPRv4-Hardened controller + items: + - enum: + - qcom,msm8998-cprh + - qcom,sdm630-cprh + - const: qcom,cprh + + reg: + description: Base address and size of the CPR controller(s) + minItems: 1 + maxItems: 2 + + interrupts: + maxItems: 1 + + clock-names: + items: + - const: "ref" + + clocks: + items: + - description: CPR reference clock + + vdd-supply: + description: Autonomous Phase Control (APC) or other power supply + + '#power-domain-cells': + const: 1 + + acc-syscon: + description: phandle to syscon for writing ACC settings + + nvmem-cells: + description: Cells containing the fuse corners and revision data + minItems: 10 + maxItems: 32 + + nvmem-cell-names: + minItems: 10 + maxItems: 32 + + operating-points-v2: true + +required: + - compatible + - reg + - clock-names + - clocks + - "#power-domain-cells" + - nvmem-cells + - nvmem-cell-names + - operating-points-v2 + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/qcom,gcc-msm8998.h> + #include <dt-bindings/interrupt-controller/irq.h> + + cpus { + #address-cells = <2>; + #size-cells = <0>; + + cpu@0 { + compatible = "qcom,kryo280"; + device_type = "cpu"; + reg = <0x0 0x0>; + operating-points-v2 = <&cpu_gold_opp_table>; + power-domains = <&apc_cprh 0>; + power-domain-names = "cprh"; + }; + + cpu@100 { + compatible = "qcom,kryo280"; + device_type = "cpu"; + reg = <0x0 0x0>; + operating-points-v2 = <&cpu_silver_opp_table>; + power-domains = <&apc_cprh 1>; + power-domain-names = "cprh"; + }; + }; + + cpu_silver_opp_table: cpu-silver-opp-table { + compatible = "operating-points-v2"; + opp-shared; + + opp-1843200000 { + opp-hz = /bits/ 64 <1843200000>; + required-opps = <&cprh_opp3>; + }; + opp-1094400000 { + opp-hz = /bits/ 64 <1094400000>; + required-opps = <&cprh_opp2>; + }; + opp-300000000 { + opp-hz = /bits/ 64 <300000000>; + required-opps = <&cprh_opp1>; + }; + }; + + cpu_gold_opp_table: cpu-gold-opp-table { + compatible = "operating-points-v2"; + opp-shared; + + opp-2208000000 { + opp-hz = /bits/ 64 <2208000000>; + required-opps = <&cprh_opp3>; + }; + opp-1113600000 { + opp-hz = /bits/ 64 <1113600000>; + required-opps = <&cprh_opp2>; + }; + opp-300000000 { + opp-hz = /bits/ 64 <300000000>; + required-opps = <&cprh_opp1>; + }; + }; + + cprh_opp_table: cpr-hardened-opp-table { + compatible = "operating-points-v2-qcom-level"; + + cprh_opp1: opp1 { + opp-level = <1>; + qcom,opp-fuse-level = <1>; + }; + cprh_opp2: opp2 { + opp-level = <2>; + qcom,opp-fuse-level = <2>; + }; + cprh_opp3: opp3 { + opp-level = <3>; + qcom,opp-fuse-level = <2 3>; + }; + }; + + apc_cprh: power-controller@179c8000 { + compatible = "qcom,msm8998-cprh", "qcom,cprh"; + reg = <0x0179c8000 0x4000>, <0x0179c4000 0x4000>; + clocks = <&gcc GCC_HMSS_RBCPR_CLK>; + clock-names = "ref"; + + #power-domain-cells = <1>; + operating-points-v2 = <&cprh_opp_table>; + + nvmem-cells = <&cpr_efuse_speedbin>, + <&cpr_fuse_revision>, + <&cpr_quot0_pwrcl>, + <&cpr_quot1_pwrcl>, + <&cpr_quot2_pwrcl>, + <&cpr_quot3_pwrcl>, + <&cpr_quot_offset1_pwrcl>, + <&cpr_quot_offset2_pwrcl>, + <&cpr_quot_offset3_pwrcl>, + <&cpr_init_voltage0_pwrcl>, + <&cpr_init_voltage1_pwrcl>, + <&cpr_init_voltage2_pwrcl>, + <&cpr_init_voltage3_pwrcl>, + <&cpr_ro_sel0_pwrcl>, + <&cpr_ro_sel1_pwrcl>, + <&cpr_ro_sel2_pwrcl>, + <&cpr_ro_sel3_pwrcl>, + <&cpr_quot0_perfcl>, + <&cpr_quot1_perfcl>, + <&cpr_quot2_perfcl>, + <&cpr_quot3_perfcl>, + <&cpr_quot_offset1_perfcl>, + <&cpr_quot_offset2_perfcl>, + <&cpr_quot_offset3_perfcl>, + <&cpr_init_voltage0_perfcl>, + <&cpr_init_voltage1_perfcl>, + <&cpr_init_voltage2_perfcl>, + <&cpr_init_voltage3_perfcl>, + <&cpr_ro_sel0_perfcl>, + <&cpr_ro_sel1_perfcl>, + <&cpr_ro_sel2_perfcl>, + <&cpr_ro_sel3_perfcl>; + + nvmem-cell-names = "cpr_speed_bin", + "cpr_fuse_revision", + "cpr0_quotient1", + "cpr0_quotient2", + "cpr0_quotient3", + "cpr0_quotient4", + "cpr0_quotient_offset2", + "cpr0_quotient_offset3", + "cpr0_quotient_offset4", + "cpr0_init_voltage1", + "cpr0_init_voltage2", + "cpr0_init_voltage3", + "cpr0_init_voltage4", + "cpr0_ring_osc1", + "cpr0_ring_osc2", + "cpr0_ring_osc3", + "cpr0_ring_osc4", + "cpr1_quotient1", + "cpr1_quotient2", + "cpr1_quotient3", + "cpr1_quotient4", + "cpr1_quotient_offset2", + "cpr1_quotient_offset3", + "cpr1_quotient_offset4", + "cpr1_init_voltage1", + "cpr1_init_voltage2", + "cpr1_init_voltage3", + "cpr1_init_voltage4", + "cpr1_ring_osc1", + "cpr1_ring_osc2", + "cpr1_ring_osc3", + "cpr1_ring_osc4"; + }; +... -- 2.32.0
