Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / Documentation / devicetree / bindings / arm / bcm / brcm,bcm11351-cpu-method.txt

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