mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-08-31 22:23:05 +00:00
672d644a7d
Convert APM X-Gene Standby GPIO binding to DT schema format. It's a straight forward conversion. Signed-off-by: Rob Herring (Arm) <robh@kernel.org> Link: https://lore.kernel.org/r/20250714202821.3011099-1-robh@kernel.org Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
95 lines
2.6 KiB
YAML
95 lines
2.6 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/apm,xgene-gpio-sb.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: APM X-Gene Standby GPIO controller
|
|
|
|
maintainers:
|
|
- Khuong Dinh <khuong@os.amperecomputing.com>
|
|
|
|
description: |
|
|
This is a gpio controller in the standby domain. It also supports interrupt in
|
|
some particular pins which are sourced to its parent interrupt controller
|
|
as diagram below:
|
|
+-----------------+
|
|
| X-Gene standby |
|
|
| GPIO controller +------ GPIO_0
|
|
+------------+ | | ...
|
|
| Parent IRQ | EXT_INT_0 | +------ GPIO_8/EXT_INT_0
|
|
| controller | (SPI40) | | ...
|
|
| (GICv2) +--------------+ +------ GPIO_[N+8]/EXT_INT_N
|
|
| | ... | |
|
|
| | EXT_INT_N | +------ GPIO_[N+9]
|
|
| | (SPI[40 + N])| | ...
|
|
| +--------------+ +------ GPIO_MAX
|
|
+------------+ +-----------------+
|
|
|
|
properties:
|
|
compatible:
|
|
const: apm,xgene-gpio-sb
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
'#gpio-cells':
|
|
const: 2
|
|
|
|
gpio-controller: true
|
|
|
|
interrupts:
|
|
description:
|
|
List of interrupt specifiers for EXT_INT_0 through EXT_INT_N. The first
|
|
entry must correspond to EXT_INT_0.
|
|
|
|
'#interrupt-cells':
|
|
const: 2
|
|
description:
|
|
First cell selects EXT_INT_N (0-N), second cell specifies flags
|
|
|
|
interrupt-controller: true
|
|
|
|
apm,nr-gpios:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: Number of GPIO pins
|
|
|
|
apm,nr-irqs:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: Number of interrupt pins
|
|
|
|
apm,irq-start:
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: Lowest GPIO pin supporting interrupts
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- '#gpio-cells'
|
|
- gpio-controller
|
|
- interrupts
|
|
- '#interrupt-cells'
|
|
- interrupt-controller
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
gpio@17001000 {
|
|
compatible = "apm,xgene-gpio-sb";
|
|
reg = <0x17001000 0x400>;
|
|
#gpio-cells = <2>;
|
|
gpio-controller;
|
|
interrupts = <0x0 0x28 0x1>,
|
|
<0x0 0x29 0x1>,
|
|
<0x0 0x2a 0x1>,
|
|
<0x0 0x2b 0x1>,
|
|
<0x0 0x2c 0x1>,
|
|
<0x0 0x2d 0x1>;
|
|
#interrupt-cells = <2>;
|
|
interrupt-controller;
|
|
apm,nr-gpios = <22>;
|
|
apm,nr-irqs = <6>;
|
|
apm,irq-start = <8>;
|
|
};
|