From 646d1a09f05689a3a4781112a3b3e4747d0ba231 Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Wed, 7 Nov 2018 09:48:28 +0100 Subject: dts: update to v4.20-rc1 Signed-off-by: Sascha Hauer --- dts/Bindings/csky/cpus.txt | 73 ++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 73 insertions(+) create mode 100644 dts/Bindings/csky/cpus.txt (limited to 'dts/Bindings/csky/cpus.txt') diff --git a/dts/Bindings/csky/cpus.txt b/dts/Bindings/csky/cpus.txt new file mode 100644 index 0000000000..ae79412f26 --- /dev/null +++ b/dts/Bindings/csky/cpus.txt @@ -0,0 +1,73 @@ +================== +C-SKY CPU Bindings +================== + +The device tree allows to describe the layout of CPUs in a system through +the "cpus" node, which in turn contains a number of subnodes (ie "cpu") +defining properties for every cpu. + +Only SMP system need to care about the cpus node and single processor +needn't define cpus node at all. + +===================================== +cpus and cpu node bindings definition +===================================== + +- cpus node + + Description: Container of cpu nodes + + The node name must be "cpus". + + A cpus node must define the following properties: + + - #address-cells + Usage: required + Value type: + Definition: must be set to 1 + - #size-cells + Usage: required + Value type: + Definition: must be set to 0 + +- cpu node + + Description: Describes one of SMP cores + + PROPERTIES + + - device_type + Usage: required + Value type: + Definition: must be "cpu" + - reg + Usage: required + Value type: + Definition: CPU index + - compatible: + Usage: required + Value type: + Definition: must contain "csky", eg: + "csky,610" + "csky,807" + "csky,810" + "csky,860" + +Example: +-------- + + cpus { + #address-cells = <1>; + #size-cells = <0>; + cpu@0 { + device_type = "cpu"; + reg = <0>; + status = "ok"; + }; + + cpu@1 { + device_type = "cpu"; + reg = <1>; + status = "ok"; + }; + }; -- cgit v1.2.3