Messages in this thread Patch in this message | | | Date | Mon, 12 Mar 2018 15:21:48 -0700 | From | Ivan Gorinov <> | Subject | [PATCH v5 1/2] of: Documentation: Specify local APIC ID in "reg" |
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Set the "reg" property to the processor's local APIC ID. Local APIC ID is assigned by hardware and may differ from CPU number.
Signed-off-by: Ivan Gorinov <ivan.gorinov@intel.com> --- Documentation/devicetree/bindings/x86/ce4100.txt | 38 ++++++++++++++++++------ 1 file changed, 29 insertions(+), 9 deletions(-)
diff --git a/Documentation/devicetree/bindings/x86/ce4100.txt b/Documentation/devicetree/bindings/x86/ce4100.txt index b49ae59..5a4bd83 100644 --- a/Documentation/devicetree/bindings/x86/ce4100.txt +++ b/Documentation/devicetree/bindings/x86/ce4100.txt @@ -7,17 +7,37 @@ Many of the "generic" devices like HPET or IO APIC have the ce4100 name in their compatible property because they first appeared in this SoC. -The CPU node ------------- - cpu@0 { - device_type = "cpu"; - compatible = "intel,ce4100"; - reg = <0>; - lapic = <&lapic0>; +The CPU nodes +------------- + + cpus { + #address-cells = <1>; + #size-cells = <0>; + + cpu@0 { + device_type = "cpu"; + compatible = "intel,ce4100"; + reg = <0x00>; + }; + + cpu@1 { + device_type = "cpu"; + compatible = "intel,ce4100"; + reg = <0x02>; + }; }; -The reg property describes the CPU number. The lapic property points to -the local APIC timer. +A "cpu" node describes one logical processor (hardware thread). + +Required properties: + +- device_type + Device type, must be "cpu". + +- reg + Local APIC ID, a unique number assigned to each processor by + hardware. This ID is used to specify the destination of interrupt + messages with "physical" destination mode, including startup IPI. The SoC node ------------ -- 2.7.4
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