37 lines
1.1 KiB
Plaintext
37 lines
1.1 KiB
Plaintext
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Broadcom Kona Family CPU Enable Method
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--------------------------------------
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This binding defines the enable method used for starting secondary
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CPUs in the following Broadcom SoCs:
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BCM11130, BCM11140, BCM11351, BCM28145, BCM28155, BCM21664
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The enable method is specified by defining the following required
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properties in the "cpu" device tree node:
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- enable-method = "brcm,bcm11351-cpu-method";
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- secondary-boot-reg = <...>;
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The secondary-boot-reg property is a u32 value that specifies the
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physical address of the register used to request the ROM holding pen
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code release a secondary CPU. The value written to the register is
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formed by encoding the target CPU id into the low bits of the
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physical start address it should jump to.
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Example:
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cpus {
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#address-cells = <1>;
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#size-cells = <0>;
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cpu0: cpu@0 {
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device_type = "cpu";
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compatible = "arm,cortex-a9";
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reg = <0>;
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};
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cpu1: cpu@1 {
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device_type = "cpu";
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compatible = "arm,cortex-a9";
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reg = <1>;
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enable-method = "brcm,bcm11351-cpu-method";
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secondary-boot-reg = <0x3500417c>;
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};
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};
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