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