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>
81 lines
2.0 KiB
YAML
81 lines
2.0 KiB
YAML
# SPDX-License-Identifier: GPL-2.0
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/mailbox/allwinner,sun6i-a31-msgbox.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Allwinner sunxi Message Box
|
|
|
|
maintainers:
|
|
- Samuel Holland <samuel@sholland.org>
|
|
|
|
description: |
|
|
The hardware message box on sun6i, sun8i, sun9i, and sun50i SoCs is a
|
|
two-user mailbox controller containing 8 unidirectional FIFOs. An interrupt
|
|
is raised for received messages, but software must poll to know when a
|
|
transmitted message has been acknowledged by the remote user. Each FIFO can
|
|
hold four 32-bit messages; when a FIFO is full, clients must wait before
|
|
attempting more transmissions.
|
|
|
|
Refer to ./mailbox.txt for generic information about mailbox device-tree
|
|
bindings.
|
|
|
|
properties:
|
|
compatible:
|
|
oneOf:
|
|
- items:
|
|
- enum:
|
|
- allwinner,sun8i-a83t-msgbox
|
|
- allwinner,sun8i-h3-msgbox
|
|
- allwinner,sun9i-a80-msgbox
|
|
- allwinner,sun50i-a64-msgbox
|
|
- allwinner,sun50i-h6-msgbox
|
|
- const: allwinner,sun6i-a31-msgbox
|
|
- const: allwinner,sun6i-a31-msgbox
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
clocks:
|
|
maxItems: 1
|
|
description: bus clock
|
|
|
|
resets:
|
|
maxItems: 1
|
|
description: bus reset
|
|
|
|
interrupts:
|
|
maxItems: 1
|
|
|
|
'#mbox-cells':
|
|
const: 1
|
|
description: first cell is the channel number (0-7)
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- clocks
|
|
- resets
|
|
- interrupts
|
|
- '#mbox-cells'
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/clock/sun8i-h3-ccu.h>
|
|
#include <dt-bindings/interrupt-controller/arm-gic.h>
|
|
#include <dt-bindings/reset/sun8i-h3-ccu.h>
|
|
|
|
msgbox: mailbox@1c17000 {
|
|
compatible = "allwinner,sun8i-h3-msgbox",
|
|
"allwinner,sun6i-a31-msgbox";
|
|
reg = <0x01c17000 0x1000>;
|
|
clocks = <&ccu CLK_BUS_MSGBOX>;
|
|
resets = <&ccu RST_BUS_MSGBOX>;
|
|
interrupts = <GIC_SPI 49 IRQ_TYPE_LEVEL_HIGH>;
|
|
#mbox-cells = <1>;
|
|
};
|
|
|
|
...
|