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Diffstat (limited to 'Documentation/devicetree/bindings/arm/cpus.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/cpus.yaml | 487 |
1 files changed, 224 insertions, 263 deletions
diff --git a/Documentation/devicetree/bindings/arm/cpus.yaml b/Documentation/devicetree/bindings/arm/cpus.yaml index 591bbd012d63..aa40b074b864 100644 --- a/Documentation/devicetree/bindings/arm/cpus.yaml +++ b/Documentation/devicetree/bindings/arm/cpus.yaml @@ -39,281 +39,242 @@ description: |+ described below. properties: - $nodename: - const: cpus - description: Container of cpu nodes - - '#address-cells': - enum: [1, 2] + reg: + maxItems: 1 description: | - Definition depends on ARM architecture version and configuration: + Usage and definition depend on ARM architecture version and + configuration: On uniprocessor ARM architectures previous to v7 - value must be 1, to enable a simple enumeration - scheme for processors that do not have a HW CPU - identification register. - On 32-bit ARM 11 MPcore, ARM v7 or later systems - value must be 1, that corresponds to CPUID/MPIDR - registers sizes. - On ARM v8 64-bit systems value should be set to 2, - that corresponds to the MPIDR_EL1 register size. - If MPIDR_EL1[63:32] value is equal to 0 on all CPUs - in the system, #address-cells can be set to 1, since - MPIDR_EL1[63:32] bits are not used for CPUs - identification. - - '#size-cells': - const: 0 - -patternProperties: - '^cpu@[0-9a-f]+$': - type: object - properties: - device_type: - const: cpu - - reg: - maxItems: 1 - 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 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. - - 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. - - 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. + 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. + + 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. + + 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. + + * 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 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. + + All other bits in the reg cells must be set to 0. + + compatible: + enum: + - arm,arm710t + - arm,arm720t + - arm,arm740t + - arm,arm7ej-s + - arm,arm7tdmi + - arm,arm7tdmi-s + - arm,arm9es + - arm,arm9ej-s + - arm,arm920t + - arm,arm922t + - arm,arm925 + - arm,arm926e-s + - arm,arm926ej-s + - arm,arm940t + - arm,arm946e-s + - arm,arm966e-s + - arm,arm968e-s + - arm,arm9tdmi + - arm,arm1020e + - arm,arm1020t + - arm,arm1022e + - arm,arm1026ej-s + - arm,arm1136j-s + - arm,arm1136jf-s + - arm,arm1156t2-s + - arm,arm1156t2f-s + - arm,arm1176jzf + - arm,arm1176jz-s + - arm,arm1176jzf-s + - arm,arm11mpcore + - arm,armv8 # Only for s/w models + - arm,cortex-a5 + - arm,cortex-a7 + - arm,cortex-a8 + - arm,cortex-a9 + - arm,cortex-a12 + - arm,cortex-a15 + - arm,cortex-a17 + - arm,cortex-a53 + - arm,cortex-a57 + - arm,cortex-a72 + - arm,cortex-a73 + - arm,cortex-m0 + - arm,cortex-m0+ + - arm,cortex-m1 + - arm,cortex-m3 + - arm,cortex-m4 + - arm,cortex-r4 + - arm,cortex-r5 + - arm,cortex-r7 + - brcm,brahma-b15 + - brcm,brahma-b53 + - brcm,vulcan + - cavium,thunder + - cavium,thunder2 + - faraday,fa526 + - intel,sa110 + - intel,sa1100 + - marvell,feroceon + - marvell,mohawk + - marvell,pj4a + - marvell,pj4b + - marvell,sheeva-v5 + - marvell,sheeva-v7 + - nvidia,tegra132-denver + - nvidia,tegra186-denver + - nvidia,tegra194-carmel + - qcom,krait + - qcom,kryo + - qcom,kryo385 + - qcom,scorpion + + enable-method: + allOf: + - $ref: '/schemas/types.yaml#/definitions/string' + - oneOf: + # On ARM v8 64-bit this property is required + - enum: + - psci + - spin-table + # On ARM 32-bit systems this property is optional + - enum: + - actions,s500-smp + - allwinner,sun6i-a31 + - allwinner,sun8i-a23 + - allwinner,sun9i-a80-smp + - allwinner,sun8i-a83t-smp + - amlogic,meson8-smp + - amlogic,meson8b-smp + - arm,realview-smp + - brcm,bcm11351-cpu-method + - brcm,bcm23550 + - brcm,bcm2836-smp + - brcm,bcm63138 + - brcm,bcm-nsp-smp + - brcm,brahma-b15 + - marvell,armada-375-smp + - marvell,armada-380-smp + - marvell,armada-390-smp + - marvell,armada-xp-smp + - marvell,98dx3236-smp + - mediatek,mt6589-smp + - mediatek,mt81xx-tz-smp + - qcom,gcc-msm8660 + - qcom,kpss-acc-v1 + - qcom,kpss-acc-v2 + - renesas,apmu + - renesas,r9a06g032-smp + - rockchip,rk3036-smp + - rockchip,rk3066-smp + - socionext,milbeaut-m10v-smp + - ste,dbx500-smp + + cpu-release-addr: + $ref: '/schemas/types.yaml#/definitions/uint64' + + description: + Required for systems that have an "enable-method" + property value of "spin-table". + On ARM v8 64-bit systems must be a two cell + property identifying a 64-bit zero-initialised + memory location. + + cpu-idle-states: + $ref: '/schemas/types.yaml#/definitions/phandle-array' + description: | + List of phandles to idle state nodes supported + by this cpu (see ./idle-states.txt). + + capacity-dmips-mhz: + $ref: '/schemas/types.yaml#/definitions/uint32' + description: + u32 value representing CPU capacity (see ./cpu-capacity.txt) in + DMIPS/MHz, relative to highest capacity-dmips-mhz + in the system. + + 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 + 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 + calculate the dynamic power as below - + + Pdyn = dynamic-power-coefficient * V^2 * f + + where voltage is in V, frequency is in MHz. + + qcom,saw: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: | + Specifies the SAW* node associated with this CPU. - * If cpus node's #address-cells property is set to 2 + Required for systems that have an "enable-method" property + value of "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2" - The first reg cell bits [7:0] must be set to - bits [39:32] of MPIDR_EL1. + * arm/msm/qcom,saw2.txt - The second reg cell bits [23:0] must be set to - bits [23:0] of MPIDR_EL1. + qcom,acc: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: | + Specifies the ACC* node associated with this CPU. - * If cpus node's #address-cells property is set to 1 + Required for systems that have an "enable-method" property + value of "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2" - The reg cell bits [23:0] must be set to bits [23:0] - of MPIDR_EL1. + * arm/msm/qcom,kpss-acc.txt - All other bits in the reg cells must be set to 0. + rockchip,pmu: + $ref: '/schemas/types.yaml#/definitions/phandle' + description: | + Specifies the syscon node controlling the cpu core power domains. - compatible: - items: - - enum: - - arm,arm710t - - arm,arm720t - - arm,arm740t - - arm,arm7ej-s - - arm,arm7tdmi - - arm,arm7tdmi-s - - arm,arm9es - - arm,arm9ej-s - - arm,arm920t - - arm,arm922t - - arm,arm925 - - arm,arm926e-s - - arm,arm926ej-s - - arm,arm940t - - arm,arm946e-s - - arm,arm966e-s - - arm,arm968e-s - - arm,arm9tdmi - - arm,arm1020e - - arm,arm1020t - - arm,arm1022e - - arm,arm1026ej-s - - arm,arm1136j-s - - arm,arm1136jf-s - - arm,arm1156t2-s - - arm,arm1156t2f-s - - arm,arm1176jzf - - arm,arm1176jz-s - - arm,arm1176jzf-s - - arm,arm11mpcore - - arm,armv8 # Only for s/w models - - arm,cortex-a5 - - arm,cortex-a7 - - arm,cortex-a8 - - arm,cortex-a9 - - arm,cortex-a12 - - arm,cortex-a15 - - arm,cortex-a17 - - arm,cortex-a53 - - arm,cortex-a57 - - arm,cortex-a72 - - arm,cortex-a73 - - arm,cortex-m0 - - arm,cortex-m0+ - - arm,cortex-m1 - - arm,cortex-m3 - - arm,cortex-m4 - - arm,cortex-r4 - - arm,cortex-r5 - - arm,cortex-r7 - - brcm,brahma-b15 - - brcm,brahma-b53 - - brcm,vulcan - - cavium,thunder - - cavium,thunder2 - - faraday,fa526 - - intel,sa110 - - intel,sa1100 - - marvell,feroceon - - marvell,mohawk - - marvell,pj4a - - marvell,pj4b - - marvell,sheeva-v5 - - marvell,sheeva-v7 - - nvidia,tegra132-denver - - nvidia,tegra186-denver - - nvidia,tegra194-carmel - - qcom,krait - - qcom,kryo - - qcom,kryo385 - - qcom,scorpion - - enable-method: - allOf: - - $ref: '/schemas/types.yaml#/definitions/string' - - oneOf: - # On ARM v8 64-bit this property is required - - enum: - - psci - - spin-table - # On ARM 32-bit systems this property is optional - - enum: - - actions,s500-smp - - allwinner,sun6i-a31 - - allwinner,sun8i-a23 - - allwinner,sun9i-a80-smp - - allwinner,sun8i-a83t-smp - - amlogic,meson8-smp - - amlogic,meson8b-smp - - arm,realview-smp - - brcm,bcm11351-cpu-method - - brcm,bcm23550 - - brcm,bcm2836-smp - - brcm,bcm63138 - - brcm,bcm-nsp-smp - - brcm,brahma-b15 - - marvell,armada-375-smp - - marvell,armada-380-smp - - marvell,armada-390-smp - - marvell,armada-xp-smp - - marvell,98dx3236-smp - - mediatek,mt6589-smp - - mediatek,mt81xx-tz-smp - - qcom,gcc-msm8660 - - qcom,kpss-acc-v1 - - qcom,kpss-acc-v2 - - renesas,apmu - - renesas,r9a06g032-smp - - rockchip,rk3036-smp - - rockchip,rk3066-smp - - socionext,milbeaut-m10v-smp - - ste,dbx500-smp - - cpu-release-addr: - $ref: '/schemas/types.yaml#/definitions/uint64' - - description: - Required for systems that have an "enable-method" - property value of "spin-table". - On ARM v8 64-bit systems must be a two cell - property identifying a 64-bit zero-initialised - memory location. - - cpu-idle-states: - $ref: '/schemas/types.yaml#/definitions/phandle-array' - description: | - List of phandles to idle state nodes supported - by this cpu (see ./idle-states.txt). - - capacity-dmips-mhz: - $ref: '/schemas/types.yaml#/definitions/uint32' - description: - u32 value representing CPU capacity (see ./cpu-capacity.txt) in - DMIPS/MHz, relative to highest capacity-dmips-mhz - in the system. - - 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 - 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 - calculate the dynamic power as below - - - Pdyn = dynamic-power-coefficient * V^2 * f - - where voltage is in V, frequency is in MHz. - - qcom,saw: - $ref: '/schemas/types.yaml#/definitions/phandle' - description: | - Specifies the SAW* node associated with this CPU. - - Required for systems that have an "enable-method" property - value of "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2" - - * arm/msm/qcom,saw2.txt - - qcom,acc: - $ref: '/schemas/types.yaml#/definitions/phandle' - description: | - Specifies the ACC* node associated with this CPU. - - Required for systems that have an "enable-method" property - value of "qcom,kpss-acc-v1" or "qcom,kpss-acc-v2" - - * arm/msm/qcom,kpss-acc.txt - - rockchip,pmu: - $ref: '/schemas/types.yaml#/definitions/phandle' - 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. - - required: - - device_type - - reg - - compatible - - dependencies: - cpu-release-addr: [enable-method] - rockchip,pmu: [enable-method] + 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. required: - - '#address-cells' - - '#size-cells' + - device_type + - reg + - compatible + +dependencies: + rockchip,pmu: [enable-method] examples: - | |