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|
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/hisilicon/controller/sysctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Hisilicon system controller
maintainers:
- Wei Xu <xuwei5@hisilicon.com>
description: |
The Hisilicon system controller is used on many Hisilicon boards, it can be
used to assist the slave core startup, reboot the system, etc.
There are some variants of the Hisilicon system controller, such as HiP01,
Hi3519, Hi6220 system controller, each of them is mostly compatible with the
Hisilicon system controller, but some same registers located at different
offset. In addition, the HiP01 system controller has some specific control
registers for HIP01 SoC family, such as slave core boot.
The compatible names of each system controller are as follows:
Hisilicon system controller --> hisilicon,sysctrl
HiP01 system controller --> hisilicon,hip01-sysctrl
Hi6220 system controller --> hisilicon,hi6220-sysctrl
Hi3519 system controller --> hisilicon,hi3519-sysctrl
allOf:
- if:
properties:
compatible:
contains:
const: hisilicon,hi6220-sysctrl
then:
required:
- '#clock-cells'
properties:
compatible:
oneOf:
- items:
- enum:
- hisilicon,sysctrl
- hisilicon,hi6220-sysctrl
- hisilicon,hi3519-sysctrl
- const: syscon
- items:
- const: hisilicon,hip01-sysctrl
- const: hisilicon,sysctrl
reg:
maxItems: 1
smp-offset:
description: |
offset in sysctrl for notifying slave cpu booting
cpu 1, reg;
cpu 2, reg + 0x4;
cpu 3, reg + 0x8;
If reg value is not zero, cpun exit wfi and go
$ref: /schemas/types.yaml#/definitions/uint32
resume-offset:
description: offset in sysctrl for notifying cpu0 when resume
$ref: /schemas/types.yaml#/definitions/uint32
reboot-offset:
description: offset in sysctrl for system reboot
$ref: /schemas/types.yaml#/definitions/uint32
'#clock-cells':
const: 1
'#reset-cells':
const: 1
'#address-cells':
const: 1
'#size-cells':
const: 1
ranges: true
required:
- compatible
- reg
additionalProperties:
type: object
examples:
- |
/* Hisilicon system controller */
system-controller@802000 {
compatible = "hisilicon,sysctrl", "syscon";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x802000 0x1000>;
reg = <0x802000 0x1000>;
smp-offset = <0x31c>;
resume-offset = <0x308>;
reboot-offset = <0x4>;
clock: clock@0 {
compatible = "hisilicon,hi3620-clock";
reg = <0 0x10000>;
#clock-cells = <1>;
};
};
/* HiP01 system controller */
system-controller@10000000 {
compatible = "hisilicon,hip01-sysctrl", "hisilicon,sysctrl";
reg = <0x10000000 0x1000>;
reboot-offset = <0x4>;
};
/* Hi6220 system controller */
system-controller@f7030000 {
compatible = "hisilicon,hi6220-sysctrl", "syscon";
reg = <0xf7030000 0x2000>;
#clock-cells = <1>;
};
/* Hi3519 system controller */
system-controller@12010000 {
compatible = "hisilicon,hi3519-sysctrl", "syscon";
reg = <0x12010000 0x1000>;
};
...
|
