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authorSascha Hauer <s.hauer@pengutronix.de>2015-05-06 08:56:43 +0200
committerSascha Hauer <s.hauer@pengutronix.de>2015-05-06 08:56:43 +0200
commit461f8cfc7ea788428240271818363333ceff5c4c (patch)
treea3d6e3737c203ea29f8db2a6ddaadc326247376c /dts/Bindings/arm/al,alpine.txt
parent6345d37ae50c3ac8dd0e6176bc846fe211cbddd4 (diff)
downloadbarebox-461f8cfc7ea788428240271818363333ceff5c4c.tar.gz
barebox-461f8cfc7ea788428240271818363333ceff5c4c.tar.xz
dts: update to v4.1-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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+Annapurna Labs Alpine Platform Device Tree Bindings
+---------------------------------------------------------------
+
+Boards in the Alpine family shall have the following properties:
+
+* Required root node properties:
+compatible: must contain "al,alpine"
+
+* Example:
+
+/ {
+ model = "Annapurna Labs Alpine Dev Board";
+ compatible = "al,alpine";
+
+ ...
+}
+
+* CPU node:
+
+The Alpine platform includes cortex-a15 cores.
+enable-method: must be "al,alpine-smp" to allow smp [1]
+
+Example:
+
+cpus {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ enable-method = "al,alpine-smp";
+
+ cpu@0 {
+ compatible = "arm,cortex-a15";
+ device_type = "cpu";
+ reg = <0>;
+ };
+
+ cpu@1 {
+ compatible = "arm,cortex-a15";
+ device_type = "cpu";
+ reg = <1>;
+ };
+
+ cpu@2 {
+ compatible = "arm,cortex-a15";
+ device_type = "cpu";
+ reg = <2>;
+ };
+
+ cpu@3 {
+ compatible = "arm,cortex-a15";
+ device_type = "cpu";
+ reg = <3>;
+ };
+};
+
+
+* Alpine CPU resume registers
+
+The CPU resume register are used to define required resume address after
+reset.
+
+Properties:
+- compatible : Should contain "al,alpine-cpu-resume".
+- reg : Offset and length of the register set for the device
+
+Example:
+
+cpu_resume {
+ compatible = "al,alpine-cpu-resume";
+ reg = <0xfbff5ed0 0x30>;
+};
+
+* Alpine System-Fabric Service Registers
+
+The System-Fabric Service Registers allow various operation on CPU and
+system fabric, like powering CPUs off.
+
+Properties:
+- compatible : Should contain "al,alpine-sysfabric-service" and "syscon".
+- reg : Offset and length of the register set for the device
+
+Example:
+
+nb_service {
+ compatible = "al,alpine-sysfabric-service", "syscon";
+ reg = <0xfb070000 0x10000>;
+};
+
+[1] arm/cpu-enable-method/al,alpine-smp