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Diffstat (limited to 'Documentation/devicetree/bindings/arm/cpus.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/cpus.yaml | 234 |
1 files changed, 146 insertions, 88 deletions
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml index 2e666b2a4dcd..2e9ab9583005 100644 --- a/Documentation/devicetree/bindings/arm/cpus.yaml +++ b/Documentation/devicetree/bindings/arm/cpus.yaml @@ -10,9 +10,9 @@ maintainers: - Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> description: |+ - The device tree allows to describe the layout of CPUs in a system through - the "cpus" node, which in turn contains a number of subnodes (ie "cpu") - defining properties for every cpu. + The device tree allows to describe the layout of CPUs in a system through the + "cpus" node, which in turn contains a number of subnodes (ie "cpu") defining + properties for every cpu. Bindings for CPU nodes follow the Devicetree Specification, available from: @@ -41,45 +41,40 @@ description: |+ properties: reg: maxItems: 1 - description: | - Usage and definition depend on ARM architecture version and - configuration: + description: > + Usage and definition depend on ARM architecture version and configuration: - On uniprocessor ARM architectures previous to v7 - this property is required and must be set to 0. + On uniprocessor ARM architectures previous to v7 this property is required + and must be set to 0. - On ARM 11 MPcore based systems this property is - required and matches the CPUID[11:0] register bits. + On ARM 11 MPcore based systems this property is required and matches the + CPUID[11:0] register bits. - Bits [11:0] in the reg cell must be set to - bits [11:0] in CPU ID register. + Bits [11:0] in the reg cell must be set to bits [11:0] in CPU ID register. All other bits in the reg cell must be set to 0. - On 32-bit ARM v7 or later systems this property is - required and matches the CPU MPIDR[23:0] register - bits. + On 32-bit ARM v7 or later systems this property is required and matches + the CPU MPIDR[23:0] register bits. - Bits [23:0] in the reg cell must be set to - bits [23:0] in MPIDR. + Bits [23:0] in the reg cell must be set to bits [23:0] in MPIDR. All other bits in the reg cell must be set to 0. - On ARM v8 64-bit systems this property is required - and matches the MPIDR_EL1 register affinity bits. + On ARM v8 64-bit systems this property is required and matches the + MPIDR_EL1 register affinity bits. * If cpus node's #address-cells property is set to 2 - The first reg cell bits [7:0] must be set to - bits [39:32] of MPIDR_EL1. + The first reg cell bits [7:0] must be set to bits [39:32] of + MPIDR_EL1. - The second reg cell bits [23:0] must be set to - bits [23:0] of MPIDR_EL1. + The second reg cell bits [23:0] must be set to bits [23:0] of + MPIDR_EL1. * If cpus node's #address-cells property is set to 1 - The reg cell bits [23:0] must be set to bits [23:0] - of MPIDR_EL1. + The reg cell bits [23:0] must be set to bits [23:0] of MPIDR_EL1. All other bits in the reg cells must be set to 0. @@ -273,103 +268,122 @@ properties: description: The DT specification defines this as 64-bit always, but some 32-bit Arm systems have used a 32-bit value which must be supported. - Required for systems that have an "enable-method" - property value of "spin-table". cpu-idle-states: $ref: /schemas/types.yaml#/definitions/phandle-array items: maxItems: 1 - description: | - List of phandles to idle state nodes supported - by this cpu (see ./idle-states.yaml). + description: + List of phandles to idle state nodes supported by this cpu (see + ./idle-states.yaml). capacity-dmips-mhz: description: u32 value representing CPU capacity (see ../cpu/cpu-capacity.txt) in - DMIPS/MHz, relative to highest capacity-dmips-mhz - in the system. + DMIPS/MHz, relative to highest capacity-dmips-mhz in the system. cci-control-port: true dynamic-power-coefficient: $ref: /schemas/types.yaml#/definitions/uint32 - description: - A u32 value that represents the running time dynamic - power coefficient in units of uW/MHz/V^2. The - coefficient can either be calculated from power + description: > + A u32 value that represents the running time dynamic power coefficient in + units of uW/MHz/V^2. The coefficient can either be calculated from power measurements or derived by analysis. - The dynamic power consumption of the CPU is - proportional to the square of the Voltage (V) and - the clock frequency (f). The coefficient is used to + The dynamic power consumption of the CPU is proportional to the square of + the Voltage (V) and the clock frequency (f). The coefficient is used to calculate the dynamic power as below - Pdyn = dynamic-power-coefficient * V^2 * f where voltage is in V, frequency is in MHz. + interconnects: + minItems: 1 + maxItems: 3 + + nvmem-cells: + maxItems: 1 + + nvmem-cell-names: + const: speed_grade + performance-domains: maxItems: 1 - description: - List of phandles and performance domain specifiers, as defined by - bindings of the performance domain provider. See also - dvfs/performance-domain.yaml. power-domains: - description: - List of phandles and PM domain specifiers, as defined by bindings of the - PM domain provider (see also ../power_domain.txt). + minItems: 1 + maxItems: 2 power-domain-names: description: - A list of power domain name strings sorted in the same order as the - power-domains property. - For PSCI based platforms, the name corresponding to the index of the PSCI PM domain provider, must be "psci". For SCMI based platforms, the name corresponding to the index of an SCMI performance domain provider, must be "perf". + minItems: 1 + maxItems: 2 + items: + enum: [ psci, perf, cpr ] - qcom,saw: - $ref: /schemas/types.yaml#/definitions/phandle - description: | - Specifies the SAW* node associated with this CPU. + resets: + maxItems: 1 - Required for systems that have an "enable-method" property - value of "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2" + arm-supply: + deprecated: true + description: Use 'cpu-supply' instead - * arm/msm/qcom,saw2.txt + cpu0-supply: + deprecated: true + description: Use 'cpu-supply' instead - qcom,acc: + mem-supply: true + + proc-supply: + deprecated: true + description: Use 'cpu-supply' instead + + sram-supply: + deprecated: true + description: Use 'mem-supply' instead + + mediatek,cci: $ref: /schemas/types.yaml#/definitions/phandle - description: | - Specifies the ACC* node associated with this CPU. + description: Link to Mediatek Cache Coherent Interconnect - Required for systems that have an "enable-method" property - value of "qcom,kpss-acc-v1", "qcom,kpss-acc-v2", "qcom,msm8226-smp" or - "qcom,msm8916-smp". + qcom,saw: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Specifies the SAW node associated with this CPU. - * arm/msm/qcom,kpss-acc.txt + qcom,acc: + $ref: /schemas/types.yaml#/definitions/phandle + description: + Specifies the ACC node associated with this CPU. + + qcom,freq-domain: + description: Specifies the QCom CPUFREQ HW associated with the CPU. + $ref: /schemas/types.yaml#/definitions/phandle-array + maxItems: 1 rockchip,pmu: $ref: /schemas/types.yaml#/definitions/phandle - description: | + description: > Specifies the syscon node controlling the cpu core power domains. - Optional for systems that have an "enable-method" - property value of "rockchip,rk3066-smp" - While optional, it is the preferred way to get access to - the cpu-core power-domains. + Optional for systems that have an "enable-method" property value of + "rockchip,rk3066-smp". While optional, it is the preferred way to get + access to the cpu-core power-domains. secondary-boot-reg: $ref: /schemas/types.yaml#/definitions/uint32 - description: | + description: > Required for systems that have an "enable-method" property value of "brcm,bcm11351-cpu-method", "brcm,bcm23550" or "brcm,bcm-nsp-smp". - This includes the following SoCs: | - BCM11130, BCM11140, BCM11351, BCM28145, BCM28155, BCM21664, BCM23550 + This includes the following SoCs: + BCM11130, BCM11140, BCM11351, BCM28145, BCM28155, BCM21664, BCM23550, BCM58522, BCM58525, BCM58535, BCM58622, BCM58623, BCM58625, BCM88312 The secondary-boot-reg property is a u32 value that specifies the @@ -378,22 +392,66 @@ properties: formed by encoding the target CPU id into the low bits of the physical start address it should jump to. -if: - # If the enable-method property contains one of those values - properties: - enable-method: - contains: - enum: - - brcm,bcm11351-cpu-method - - brcm,bcm23550 - - brcm,bcm-nsp-smp - # and if enable-method is present - required: - - enable-method - -then: - required: - - secondary-boot-reg + thermal-idle: + type: object + +allOf: + - $ref: /schemas/cpu.yaml# + - $ref: /schemas/opp/opp-v1.yaml# + - if: + # If the enable-method property contains one of those values + properties: + enable-method: + contains: + enum: + - brcm,bcm11351-cpu-method + - brcm,bcm23550 + - brcm,bcm-nsp-smp + # and if enable-method is present + required: + - enable-method + then: + required: + - secondary-boot-reg + - if: + properties: + enable-method: + enum: + - spin-table + - renesas,r9a06g032-smp + required: + - enable-method + then: + required: + - cpu-release-addr + - if: + properties: + enable-method: + enum: + - qcom,kpss-acc-v1 + - qcom,kpss-acc-v2 + - qcom,msm8226-smp + - qcom,msm8916-smp + required: + - enable-method + then: + required: + - qcom,acc + - qcom,saw + else: + if: + # 2 Qualcomm platforms bootloaders need qcom,acc and qcom,saw yet use + # "spin-table" or "psci" enable-methods. Disallowing the properties for + # all other CPUs is the best we can do as there's not any way to + # distinguish these Qualcomm platforms. + not: + properties: + compatible: + const: arm,cortex-a53 + then: + properties: + qcom,acc: false + qcom,saw: false required: - device_type @@ -403,7 +461,7 @@ required: dependencies: rockchip,pmu: [enable-method] -additionalProperties: true +unevaluatedProperties: false examples: - | |