@@ -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.
@@ -278,29 +273,26 @@ properties:
$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
@@ -309,10 +301,6 @@ properties:
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:
@@ -341,22 +329,21 @@ properties:
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
Some of the 'description' entries have odd line wrapping and incorrect YAML block modifiers. The 'description' entries should typically wrap at 80 chars. Reformat the entries to follow that along with using '>' modifiers as appropriate. Signed-off-by: Rob Herring (Arm) <robh@kernel.org> --- Documentation/devicetree/bindings/arm/cpus.yaml | 85 +++++++++++-------------- 1 file changed, 36 insertions(+), 49 deletions(-)