| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| # # Copyright (c) 2018 Google LLC |
| # # Copyright (c) 2021 Aspeed Technology Inc. |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/soc/aspeed/uart-routing.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: Aspeed UART Routing Controller |
| |
| maintainers: |
| - Oskar Senft <osk@google.com> |
| - Chia-Wei Wang <chiawei_wang@aspeedtech.com> |
| |
| description: |
| The Aspeed UART routing control allow to dynamically route the inputs for |
| the built-in UARTS and physical serial I/O ports. |
| |
| This allows, for example, to connect the output of UART to another UART. |
| This can be used to enable Host <-> BMC communication via UARTs, e.g. to |
| allow access to the Host's serial console. |
| |
| This driver is for the BMC side. The sysfs files allow the BMC userspace |
| which owns the system configuration policy, to configure how UARTs and |
| physical serial I/O ports are routed. |
| |
| properties: |
| compatible: |
| items: |
| - enum: |
| - aspeed,ast2400-uart-routing |
| - aspeed,ast2500-uart-routing |
| - aspeed,ast2600-uart-routing |
| reg: |
| maxItems: 1 |
| |
| required: |
| - compatible |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| lpc: lpc@1e789000 { |
| compatible = "aspeed,ast2600-lpc-v2", "simple-mfd", "syscon"; |
| reg = <0x1e789000 0x1000>; |
| |
| #address-cells = <1>; |
| #size-cells = <1>; |
| ranges = <0x0 0x1e789000 0x1000>; |
| |
| uart_routing: uart-routing@98 { |
| compatible = "aspeed,ast2600-uart-routing"; |
| reg = <0x98 0x8>; |
| }; |
| }; |
