58 lines
1.4 KiB
Plaintext
58 lines
1.4 KiB
Plaintext
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CE4100 Device Tree Bindings
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---------------------------
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The CE4100 SoC uses for in core peripherals the following compatible
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format: <vendor>,<chip>-<device>.
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Many of the "generic" devices like HPET or IO APIC have the ce4100
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name in their compatible property because they first appeared in this
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SoC.
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The CPU nodes
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-------------
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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cpu@0 {
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device_type = "cpu";
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compatible = "intel,ce4100";
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reg = <0x00>;
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};
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cpu@2 {
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device_type = "cpu";
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compatible = "intel,ce4100";
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reg = <0x02>;
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};
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};
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A "cpu" node describes one logical processor (hardware thread).
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Required properties:
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- device_type
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Device type, must be "cpu".
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- reg
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Local APIC ID, the unique number assigned to each processor by
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system hardware.
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The SoC node
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------------
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This node describes the in-core peripherals. Required property:
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compatible = "intel,ce4100-cp";
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The PCI node
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------------
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This node describes the PCI bus on the SoC. Its property should be
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compatible = "intel,ce4100-pci", "pci";
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If the OS is using the IO-APIC for interrupt routing then the reported
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interrupt numbers for devices is no longer true. In order to obtain the
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correct interrupt number, the child node which represents the device has
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to contain the interrupt property. Besides the interrupt property it has
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to contain at least the reg property containing the PCI bus address and
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compatible property according to "PCI Bus Binding Revision 2.1".
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