Commit da680c04 authored by Michal Simek's avatar Michal Simek Committed by Greg Kroah-Hartman
Browse files

dt-bindings: serial: Describe ARM dcc interface 



Debug Communication Channel (DCC) provides the way how to pass data between
target CPU and host via JTAG interface. Every CPU has own interface for
communication via dbgdtrtx_el0 and dbgdtrrx_el0 registers.

Signed-off-by: default avatarMichal Simek <michal.simek@amd.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/9d7e85914eb1cdb313b28cb019093a84dd9b4773.1703167505.git.michal.simek@amd.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 83e571f0

Documentation/devicetree/bindings/serial/arm,dcc.yaml

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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/serial/arm,dcc.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: ARM DCC (Data communication channel) serial emulation



maintainers:

  - Michal Simek <michal.simek@amd.com>



description: |

  ARM DCC (Data communication channel) serial emulation interface available

  via JTAG can be also used as one of serial line tightly coupled with every

  ARM CPU available in the system.



properties:

  compatible:

    const: arm,dcc



required:

  - compatible



additionalProperties: false



examples:

  - |

    serial {

      compatible = "arm,dcc";

    };