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Diffstat (limited to 'Documentation/devicetree/bindings/interrupt-controller/marvell,icu.txt')
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1 files changed, 0 insertions, 112 deletions
diff --git a/Documentation/devicetree/bindings/interrupt-controller/marvell,icu.txt b/Documentation/devicetree/bindings/interrupt-controller/marvell,icu.txt deleted file mode 100644 index 1c94a57a661e..000000000000 --- a/Documentation/devicetree/bindings/interrupt-controller/marvell,icu.txt +++ /dev/null @@ -1,112 +0,0 @@ -Marvell ICU Interrupt Controller --------------------------------- - -The Marvell ICU (Interrupt Consolidation Unit) controller is -responsible for collecting all wired-interrupt sources in the CP and -communicating them to the GIC in the AP, the unit translates interrupt -requests on input wires to MSG memory mapped transactions to the GIC. -These messages will access a different GIC memory area depending on -their type (NSR, SR, SEI, REI, etc). - -Required properties: - -- compatible: Should be "marvell,cp110-icu" - -- reg: Should contain ICU registers location and length. - -Subnodes: Each group of interrupt is declared as a subnode of the ICU, -with their own compatible. - -Required properties for the icu_nsr/icu_sei subnodes: - -- compatible: Should be one of: - * "marvell,cp110-icu-nsr" - * "marvell,cp110-icu-sr" - * "marvell,cp110-icu-sei" - * "marvell,cp110-icu-rei" - -- #interrupt-cells: Specifies the number of cells needed to encode an - interrupt source. The value shall be 2. - - The 1st cell is the index of the interrupt in the ICU unit. - - The 2nd cell is the type of the interrupt. See arm,gic.txt for - details. - -- interrupt-controller: Identifies the node as an interrupt - controller. - -- msi-parent: Should point to the GICP controller, the GIC extension - that allows to trigger interrupts using MSG memory mapped - transactions. - -Note: each 'interrupts' property referring to any 'icu_xxx' node shall - have a different number within [0:206]. - -Example: - -icu: interrupt-controller@1e0000 { - compatible = "marvell,cp110-icu"; - reg = <0x1e0000 0x440>; - - CP110_LABEL(icu_nsr): interrupt-controller@10 { - compatible = "marvell,cp110-icu-nsr"; - reg = <0x10 0x20>; - #interrupt-cells = <2>; - interrupt-controller; - msi-parent = <&gicp>; - }; - - CP110_LABEL(icu_sei): interrupt-controller@50 { - compatible = "marvell,cp110-icu-sei"; - reg = <0x50 0x10>; - #interrupt-cells = <2>; - interrupt-controller; - msi-parent = <&sei>; - }; -}; - -node1 { - interrupt-parent = <&icu_nsr>; - interrupts = <106 IRQ_TYPE_LEVEL_HIGH>; -}; - -node2 { - interrupt-parent = <&icu_sei>; - interrupts = <107 IRQ_TYPE_LEVEL_HIGH>; -}; - -/* Would not work with the above nodes */ -node3 { - interrupt-parent = <&icu_nsr>; - interrupts = <107 IRQ_TYPE_LEVEL_HIGH>; -}; - -The legacy bindings were different in this way: - -- #interrupt-cells: The value was 3. - The 1st cell was the group type of the ICU interrupt. Possible - group types were: - ICU_GRP_NSR (0x0) : Shared peripheral interrupt, non-secure - ICU_GRP_SR (0x1) : Shared peripheral interrupt, secure - ICU_GRP_SEI (0x4) : System error interrupt - ICU_GRP_REI (0x5) : RAM error interrupt - The 2nd cell was the index of the interrupt in the ICU unit. - The 3rd cell was the type of the interrupt. See arm,gic.txt for - details. - -Example: - -icu: interrupt-controller@1e0000 { - compatible = "marvell,cp110-icu"; - reg = <0x1e0000 0x440>; - - #interrupt-cells = <3>; - interrupt-controller; - msi-parent = <&gicp>; -}; - -node1 { - interrupt-parent = <&icu>; - interrupts = <ICU_GRP_NSR 106 IRQ_TYPE_LEVEL_HIGH>; -}; |