Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
68 lines
1.8 KiB
YAML
68 lines
1.8 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/interrupt-controller/st,spear300-shirq.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: SPEAr3xx Shared IRQ controller
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maintainers:
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- Viresh Kumar <vireshk@kernel.org>
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- Shiraz Hashim <shiraz.linux.kernel@gmail.com>
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description: |
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SPEAr3xx architecture includes shared/multiplexed irqs for certain set of
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devices. The multiplexor provides a single interrupt to parent interrupt
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controller (VIC) on behalf of a group of devices.
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There can be multiple groups available on SPEAr3xx variants but not exceeding
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4. The number of devices in a group can differ, further they may share same
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set of status/mask registers spanning across different bit masks. Also in some
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cases the group may not have enable or other registers. This makes software
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little complex.
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A single node in the device tree is used to describe the shared interrupt
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multiplexer (one node for all groups). A group in the interrupt controller
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shares config/control registers with other groups. For example, a 32-bit
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interrupt enable/disable config register can accommodate up to 4 interrupt
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groups.
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properties:
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compatible:
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enum:
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- st,spear300-shirq
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- st,spear310-shirq
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- st,spear320-shirq
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reg:
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maxItems: 1
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'#interrupt-cells':
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const: 1
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interrupt-controller: true
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interrupts:
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description: Interrupt specifier array for SHIRQ groups
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minItems: 1
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maxItems: 4
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required:
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- compatible
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- reg
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- '#interrupt-cells'
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- interrupt-controller
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- interrupts
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additionalProperties: false
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examples:
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- |
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interrupt-controller@b3000000 {
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compatible = "st,spear320-shirq";
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reg = <0xb3000000 0x1000>;
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interrupts = <28 29 30 1>;
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#interrupt-cells = <1>;
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interrupt-controller;
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};
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