From b4b7ff4b08e691656c9d77c758fc355833128ac0 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Wed, 20 Jan 2016 14:01:31 -0300 Subject: Linux-libre 4.4-gnu --- .../devicetree/bindings/arm/spear/shirq.txt | 48 ---------------------- 1 file changed, 48 deletions(-) delete mode 100644 Documentation/devicetree/bindings/arm/spear/shirq.txt (limited to 'Documentation/devicetree/bindings/arm/spear') diff --git a/Documentation/devicetree/bindings/arm/spear/shirq.txt b/Documentation/devicetree/bindings/arm/spear/shirq.txt deleted file mode 100644 index 715a013ed..000000000 --- a/Documentation/devicetree/bindings/arm/spear/shirq.txt +++ /dev/null @@ -1,48 +0,0 @@ -* SPEAr Shared IRQ layer (shirq) - -SPEAr3xx architecture includes shared/multiplexed irqs for certain set -of devices. The multiplexor provides a single interrupt to parent -interrupt controller (VIC) on behalf of a group of devices. - -There can be multiple groups available on SPEAr3xx variants but not -exceeding 4. The number of devices in a group can differ, further they -may share same set of status/mask registers spanning across different -bit masks. Also in some cases the group may not have enable or other -registers. This makes software little complex. - -A single node in the device tree is used to describe the shared -interrupt multiplexor (one node for all groups). A group in the -interrupt controller shares config/control registers with other groups. -For example, a 32-bit interrupt enable/disable config register can -accommodate up to 4 interrupt groups. - -Required properties: - - compatible: should be, either of - - "st,spear300-shirq" - - "st,spear310-shirq" - - "st,spear320-shirq" - - interrupt-controller: Identifies the node as an interrupt controller. - - #interrupt-cells: should be <1> which basically contains the offset - (starting from 0) of interrupts for all the groups. - - reg: Base address and size of shirq registers. - - interrupts: The list of interrupts generated by the groups which are - then connected to a parent interrupt controller. Each group is - associated with one of the interrupts, hence number of interrupts (to - parent) is equal to number of groups. The format of the interrupt - specifier depends in the interrupt parent controller. - - Optional properties: - - interrupt-parent: pHandle of the parent interrupt controller, if not - inherited from the parent node. - -Example: - -The following is an example from the SPEAr320 SoC dtsi file. - -shirq: interrupt-controller@0xb3000000 { - compatible = "st,spear320-shirq"; - reg = <0xb3000000 0x1000>; - interrupts = <28 29 30 1>; - #interrupt-cells = <1>; - interrupt-controller; -}; -- cgit v1.2.3-54-g00ecf