107 lines
2.7 KiB
YAML
107 lines
2.7 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/ipmi/aspeed,ast2400-kcs-bmc.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: ASPEED BMC KCS Devices
|
|
|
|
maintainers:
|
|
- Andrew Jeffery <andrew@aj.id.au>
|
|
|
|
description: |
|
|
The Aspeed BMC SoCs typically use the Keyboard-Controller-Style (KCS)
|
|
interfaces on the LPC bus for in-band IPMI communication with their host.
|
|
|
|
properties:
|
|
compatible:
|
|
oneOf:
|
|
- description: Channel ID derived from reg
|
|
items:
|
|
enum:
|
|
- aspeed,ast2400-kcs-bmc-v2
|
|
- aspeed,ast2500-kcs-bmc-v2
|
|
- aspeed,ast2600-kcs-bmc
|
|
|
|
- description: Old-style with explicit channel ID, no reg
|
|
deprecated: true
|
|
items:
|
|
enum:
|
|
- aspeed,ast2400-kcs-bmc
|
|
- aspeed,ast2500-kcs-bmc
|
|
|
|
interrupts:
|
|
maxItems: 1
|
|
|
|
reg:
|
|
# maxItems: 3
|
|
items:
|
|
- description: IDR register
|
|
- description: ODR register
|
|
- description: STR register
|
|
|
|
aspeed,lpc-io-reg:
|
|
$ref: /schemas/types.yaml#/definitions/uint32-array
|
|
minItems: 1
|
|
maxItems: 2
|
|
description: |
|
|
The host CPU LPC IO data and status addresses for the device. For most
|
|
channels the status address is derived from the data address, but the
|
|
status address may be optionally provided.
|
|
|
|
aspeed,lpc-interrupts:
|
|
$ref: /schemas/types.yaml#/definitions/uint32-array
|
|
minItems: 2
|
|
maxItems: 2
|
|
description: |
|
|
A 2-cell property expressing the LPC SerIRQ number and the interrupt
|
|
level/sense encoding (specified in the standard fashion).
|
|
|
|
Note that the generated interrupt is issued from the BMC to the host, and
|
|
thus the target interrupt controller is not captured by the BMC's
|
|
devicetree.
|
|
|
|
kcs_chan:
|
|
deprecated: true
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: The LPC channel number in the controller
|
|
|
|
kcs_addr:
|
|
deprecated: true
|
|
$ref: /schemas/types.yaml#/definitions/uint32
|
|
description: The host CPU IO map address
|
|
|
|
required:
|
|
- compatible
|
|
- interrupts
|
|
|
|
additionalProperties: false
|
|
|
|
allOf:
|
|
- if:
|
|
properties:
|
|
compatible:
|
|
contains:
|
|
enum:
|
|
- aspeed,ast2400-kcs-bmc
|
|
- aspeed,ast2500-kcs-bmc
|
|
then:
|
|
required:
|
|
- kcs_chan
|
|
- kcs_addr
|
|
else:
|
|
required:
|
|
- reg
|
|
- aspeed,lpc-io-reg
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/interrupt-controller/irq.h>
|
|
kcs3: kcs@24 {
|
|
compatible = "aspeed,ast2600-kcs-bmc";
|
|
reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>;
|
|
aspeed,lpc-io-reg = <0xca2>;
|
|
aspeed,lpc-interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
|
|
interrupts = <8>;
|
|
};
|