From: Florian Fainelli Date: Fri, 17 Dec 2021 16:05:45 +0000 (-0800) Subject: dt-bindings: interrupt-controller: Convert BCM7120 L2 to YAML X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=07f7f6867ecabe9c807bb17ce7449bd6bfd3a8dc;p=uclinux-h8%2Flinux.git dt-bindings: interrupt-controller: Convert BCM7120 L2 to YAML Convert the Broadcom BCM7120 Level 2 interrupt controller Device Tree binding to YAML to help with validation. Signed-off-by: Florian Fainelli Signed-off-by: Rob Herring Link: https://lore.kernel.org/r/20211217160546.497012-2-f.fainelli@gmail.com --- diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt deleted file mode 100644 index addd86b6ca2f..000000000000 --- a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.txt +++ /dev/null @@ -1,88 +0,0 @@ -Broadcom BCM7120-style Level 2 interrupt controller - -This interrupt controller hardware is a second level interrupt controller that -is hooked to a parent interrupt controller: e.g: ARM GIC for ARM-based -platforms. It can be found on BCM7xxx products starting with BCM7120. - -Such an interrupt controller has the following hardware design: - -- outputs multiple interrupts signals towards its interrupt controller parent - -- controls how some of the interrupts will be flowing, whether they will - directly output an interrupt signal towards the interrupt controller parent, - or if they will output an interrupt signal at this 2nd level interrupt - controller, in particular for UARTs - -- has one 32-bit enable word and one 32-bit status word - -- no atomic set/clear operations - -- not all bits within the interrupt controller actually map to an interrupt - -The typical hardware layout for this controller is represented below: - -2nd level interrupt line Outputs for the parent controller (e.g: ARM GIC) - -0 -----[ MUX ] ------------|==========> GIC interrupt 75 - \-----------\ - | -1 -----[ MUX ] --------)---|==========> GIC interrupt 76 - \------------| - | -2 -----[ MUX ] --------)---|==========> GIC interrupt 77 - \------------| - | -3 ---------------------| -4 ---------------------| -5 ---------------------| -7 ---------------------|---|===========> GIC interrupt 66 -9 ---------------------| -10 --------------------| -11 --------------------/ - -6 ------------------------\ - |===========> GIC interrupt 64 -8 ------------------------/ - -12 ........................ X -13 ........................ X (not connected) -.. -31 ........................ X - -Required properties: - -- compatible: should be "brcm,bcm7120-l2-intc" -- reg: specifies the base physical address and size of the registers -- interrupt-controller: identifies the node as an interrupt controller -- #interrupt-cells: specifies the number of cells needed to encode an interrupt - source, should be 1. -- interrupts: specifies the interrupt line(s) in the interrupt-parent controller - node, valid values depend on the type of parent interrupt controller -- brcm,int-map-mask: 32-bits bit mask describing how many and which interrupts - are wired to this 2nd level interrupt controller, and how they match their - respective interrupt parents. Should match exactly the number of interrupts - specified in the 'interrupts' property. - -Optional properties: - -- brcm,irq-can-wake: if present, this means the L2 controller can be used as a - wakeup source for system suspend/resume. - -- brcm,int-fwd-mask: if present, a bit mask to configure the interrupts which - have a mux gate, typically UARTs. Setting these bits will make their - respective interrupt outputs bypass this 2nd level interrupt controller - completely; it is completely transparent for the interrupt controller - parent. This should have one 32-bit word per enable/status pair. - -Example: - -irq0_intc: interrupt-controller@f0406800 { - compatible = "brcm,bcm7120-l2-intc"; - interrupt-parent = <&intc>; - #interrupt-cells = <1>; - reg = <0xf0406800 0x8>; - interrupt-controller; - interrupts = <0x0 0x42 0x0>, <0x0 0x40 0x0>; - brcm,int-map-mask = <0xeb8>, <0x140>; - brcm,int-fwd-mask = <0x7>; -}; diff --git a/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.yaml b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.yaml new file mode 100644 index 000000000000..5d7731ea4182 --- /dev/null +++ b/Documentation/devicetree/bindings/interrupt-controller/brcm,bcm7120-l2-intc.yaml @@ -0,0 +1,126 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/interrupt-controller/brcm,bcm7120-l2-intc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Broadcom BCM7120-style Level 2 interrupt controller + +maintainers: + - Florian Fainelli + +description: > + This interrupt controller hardware is a second level interrupt controller that + is hooked to a parent interrupt controller: e.g: ARM GIC for ARM-based + platforms. It can be found on BCM7xxx products starting with BCM7120. + + Such an interrupt controller has the following hardware design: + + - outputs multiple interrupts signals towards its interrupt controller parent + + - controls how some of the interrupts will be flowing, whether they will + directly output an interrupt signal towards the interrupt controller parent, + or if they will output an interrupt signal at this 2nd level interrupt + controller, in particular for UARTs + + - has one 32-bit enable word and one 32-bit status word + + - no atomic set/clear operations + + - not all bits within the interrupt controller actually map to an interrupt + + The typical hardware layout for this controller is represented below: + + 2nd level interrupt line Outputs for the parent controller (e.g: ARM GIC) + + 0 -----[ MUX ] ------------|==========> GIC interrupt 75 + \-----------\ + | + 1 -----[ MUX ] --------)---|==========> GIC interrupt 76 + \------------| + | + 2 -----[ MUX ] --------)---|==========> GIC interrupt 77 + \------------| + | + 3 ---------------------| + 4 ---------------------| + 5 ---------------------| + 7 ---------------------|---|===========> GIC interrupt 66 + 9 ---------------------| + 10 --------------------| + 11 --------------------/ + + 6 ------------------------\ + |===========> GIC interrupt 64 + 8 ------------------------/ + + 12 ........................ X + 13 ........................ X (not connected) + .. + 31 ........................ X + +allOf: + - $ref: /schemas/interrupt-controller.yaml# + +properties: + compatible: + const: brcm,bcm7120-l2-intc + + reg: + maxItems: 1 + description: > + Specifies the base physical address and size of the registers + + interrupt-controller: true + + "#interrupt-cells": + const: 1 + + interrupts: + minItems: 1 + maxItems: 32 + + brcm,int-map-mask: + $ref: /schemas/types.yaml#/definitions/uint32-array + description: > + 32-bits bit mask describing how many and which interrupts are wired to + this 2nd level interrupt controller, and how they match their respective + interrupt parents. Should match exactly the number of interrupts + specified in the 'interrupts' property. + + brcm,irq-can-wake: + type: boolean + description: > + If present, this means the L2 controller can be used as a wakeup source + for system suspend/resume. + + brcm,int-fwd-mask: + $ref: /schemas/types.yaml#/definitions/uint32 + description: > + if present, a bit mask to configure the interrupts which have a mux gate, + typically UARTs. Setting these bits will make their respective interrupt + outputs bypass this 2nd level interrupt controller completely; it is + completely transparent for the interrupt controller parent. This should + have one 32-bit word per enable/status pair. + +additionalProperties: false + +required: + - compatible + - reg + - interrupt-controller + - "#interrupt-cells" + - interrupts + +examples: + - | + irq0_intc: interrupt-controller@f0406800 { + compatible = "brcm,bcm7120-l2-intc"; + interrupt-parent = <&intc>; + #interrupt-cells = <1>; + reg = <0xf0406800 0x8>; + interrupt-controller; + interrupts = <0x0 0x42 0x0>, <0x0 0x40 0x0>; + brcm,int-map-mask = <0xeb8>, <0x140>; + brcm,int-fwd-mask = <0x7>; + };