diff options
Diffstat (limited to 'Documentation/devicetree/bindings/arm/vexpress.txt')
| -rw-r--r-- | Documentation/devicetree/bindings/arm/vexpress.txt | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/Documentation/devicetree/bindings/arm/vexpress.txt b/Documentation/devicetree/bindings/arm/vexpress.txt index 5d9996b9eabf..ae49161e478a 100644 --- a/Documentation/devicetree/bindings/arm/vexpress.txt +++ b/Documentation/devicetree/bindings/arm/vexpress.txt @@ -141,14 +141,19 @@ can be used to obtain required phandle in the tile's "aliases" node: - SP804 timers: v2m_timer01 and v2m_timer23 -Current Linux implementation requires a "arm,v2m_timer" alias -pointing at one of the motherboard's SP804 timers, if it is to be -used as the system timer. This alias should be defined in the -motherboard files. - -The tile description must define "ranges", "interrupt-map-mask" and -"interrupt-map" properties to translate the motherboard's address -and interrupt space into one used by the tile's processor. +The tile description should define a "smb" node, describing the +Static Memory Bus between the tile and motherboard. It must define +the following properties: +- "simple-bus" compatible value (to ensure creation of the children) + compatible = "simple-bus"; +- mapping of the SMB CS/offset addresses into main address space: + #address-cells = <2>; + #size-cells = <1>; + ranges = <...>; +- interrupts mapping: + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 63>; + interrupt-map = <...>; Example of a VE tile description (simplified) @@ -200,13 +205,20 @@ Example of a VE tile description (simplified) }; }; - motherboard { + smb { + compatible = "simple-bus"; + + #address-cells = <2>; + #size-cells = <1>; /* CS0 is visible at 0x08000000 */ ranges = <0 0 0x08000000 0x04000000>; + + #interrupt-cells = <1>; interrupt-map-mask = <0 0 63>; /* Active high IRQ 0 is connected to GIC's SPI0 */ interrupt-map = <0 0 0 &gic 0 0 4>; + + /include/ "vexpress-v2m-rs1.dtsi" }; }; -/include/ "vexpress-v2m-rs1.dtsi" |