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Diffstat (limited to 'Documentation')
4 files changed, 176 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/csky/cpus.txt b/Documentation/devicetree/bindings/csky/cpus.txt new file mode 100644 index 000000000000..ae79412f2680 --- /dev/null +++ b/Documentation/devicetree/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: <u32> + Definition: must be set to 1 + - #size-cells + Usage: required + Value type: <u32> + Definition: must be set to 0 + +- cpu node + + Description: Describes one of SMP cores + + PROPERTIES + + - device_type + Usage: required + Value type: <string> + Definition: must be "cpu" + - reg + Usage: required + Value type: <u32> + Definition: CPU index + - compatible: + Usage: required + Value type: <string> + 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"; + }; + }; diff --git a/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt new file mode 100644 index 000000000000..44286dcbac62 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/csky,apb-intc.txt @@ -0,0 +1,62 @@ +============================== +C-SKY APB Interrupt Controller +============================== + +C-SKY APB Interrupt Controller is a simple soc interrupt controller +on the apb bus and we only use it as root irq controller. + + - csky,apb-intc is used in a lot of csky fpgas and socs, it support 64 irq nums. + - csky,dual-apb-intc consists of 2 apb-intc and 128 irq nums supported. + - csky,gx6605s-intc is gx6605s soc internal irq interrupt controller, 64 irq nums. + +============================= +intc node bindings definition +============================= + + Description: Describes APB interrupt controller + + PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: must be "csky,apb-intc" + "csky,dual-apb-intc" + "csky,gx6605s-intc" + - #interrupt-cells + Usage: required + Value type: <u32> + Definition: must be <1> + - reg + Usage: required + Value type: <u32 u32> + Definition: <phyaddr size> in soc from cpu view + - interrupt-controller: + Usage: required + - csky,support-pulse-signal: + Usage: select + Description: to support pulse signal flag + +Examples: +--------- + + intc: interrupt-controller@500000 { + compatible = "csky,apb-intc"; + #interrupt-cells = <1>; + reg = <0x00500000 0x400>; + interrupt-controller; + }; + + intc: interrupt-controller@500000 { + compatible = "csky,dual-apb-intc"; + #interrupt-cells = <1>; + reg = <0x00500000 0x400>; + interrupt-controller; + }; + + intc: interrupt-controller@500000 { + compatible = "csky,gx6605s-intc"; + #interrupt-cells = <1>; + reg = <0x00500000 0x400>; + interrupt-controller; + }; diff --git a/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt b/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt new file mode 100644 index 000000000000..ab921f1698fb --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/csky,mpintc.txt @@ -0,0 +1,40 @@ +=========================================== +C-SKY Multi-processors Interrupt Controller +=========================================== + +C-SKY Multi-processors Interrupt Controller is designed for ck807/ck810/ck860 +SMP soc, and it also could be used in non-SMP system. + +Interrupt number definition: + + 0-15 : software irq, and we use 15 as our IPI_IRQ. + 16-31 : private irq, and we use 16 as the co-processor timer. + 31-1024: common irq for soc ip. + +============================= +intc node bindings definition +============================= + + Description: Describes SMP interrupt controller + + PROPERTIES + + - compatible + Usage: required + Value type: <string> + Definition: must be "csky,mpintc" + - #interrupt-cells + Usage: required + Value type: <u32> + Definition: must be <1> + - interrupt-controller: + Usage: required + +Examples: +--------- + + intc: interrupt-controller { + compatible = "csky,mpintc"; + #interrupt-cells = <1>; + interrupt-controller; + }; diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt index 376f24484182..14818137a029 100644 --- a/Documentation/devicetree/bindings/vendor-prefixes.txt +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt @@ -84,6 +84,7 @@ cosmic Cosmic Circuits crane Crane Connectivity Solutions creative Creative Technology Ltd crystalfontz Crystalfontz America, Inc. +csky Hangzhou C-SKY Microsystems Co., Ltd cubietech Cubietech, Ltd. cypress Cypress Semiconductor Corporation cznic CZ.NIC, z.s.p.o. |