Add a compatible string "brcm,bcm-nsp-smp" for Broadcom's
Northstar Plus CPU to the 32-bit ARM CPU device tree binding
documentation file and create a new binding documentation for
Northstar Plus CPU pen-release mechanism.
Signed-off-by: Kapil Hali <kapilh@xxxxxxxxxxxx>
---
.../bindings/arm/bcm/brcm,nsp-cpu-method.txt | 36 ++++++++++++++++++++++
Documentation/devicetree/bindings/arm/cpus.txt | 1 +
2 files changed, 37 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt
diff --git a/Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt
new file mode 100644
index 0000000..8506da7
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bcm/brcm,nsp-cpu-method.txt
@@ -0,0 +1,36 @@
+Broadcom Northstar Plus SoC CPU Enable Method
+---------------------------------------------
+This binding defines the enable method used for starting secondary
+CPUs in the following Broadcom SoCs:
+ BCM58522, BCM58525, BCM58535, BCM58622, BCM58623, BCM58625, BCM88312
+
+The enable method is specified by defining the following required
+properties in the "cpus" device tree node:
+ - enable-method = "brcm,bcm-nsp-smp";
+ - 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.
+
+Example:
+ cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ enable-method = "brcm,bcm-nsp-smp";
+ secondary-boot-reg = <0xffff042c>;
+
+ cpu0: cpu@0 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a9";
+ next-level-cache = <&L2>;
+ reg = <0>;
+ };
+
+ cpu1: cpu@1 {
+ device_type = "cpu";
+ compatible = "arm,cortex-a9";
+ next-level-cache = <&L2>;
+ reg = <1>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/arm/cpus.txt b/Documentation/devicetree/bindings/arm/cpus.txt
index 91e6e5c..6abe3f3 100644
--- a/Documentation/devicetree/bindings/arm/cpus.txt
+++ b/Documentation/devicetree/bindings/arm/cpus.txt
@@ -191,6 +191,7 @@ nodes to be present and contain the properties described below.
"allwinner,sun8i-a23"
"arm,psci"
"brcm,brahma-b15"
+ "brcm,bcm-nsp-smp"
"marvell,armada-375-smp"
"marvell,armada-380-smp"
"marvell,armada-390-smp"
--
2.1.0
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