| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/serial/nvidia,tegra264-utc.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: NVIDIA Tegra UTC (UART Trace Controller) client |
| |
| maintainers: |
| - Kartik Rajput <kkartik@nvidia.com> |
| - Thierry Reding <thierry.reding@gmail.com> |
| - Jonathan Hunter <jonathanh@nvidia.com> |
| |
| description: |
| Represents a client interface of the Tegra UTC (UART Trace Controller). The |
| Tegra UTC allows multiple clients within the Tegra SoC to share a physical |
| UART interface. It supports up to 16 clients. Each client operates as an |
| independent UART endpoint with a dedicated interrupt and 128-character TX/RX |
| FIFOs. |
| |
| The Tegra UTC clients use 8-N-1 configuration and operates on a baudrate |
| configured by the bootloader at the controller level. |
| |
| allOf: |
| - $ref: serial.yaml# |
| |
| properties: |
| compatible: |
| const: nvidia,tegra264-utc |
| |
| reg: |
| items: |
| - description: TX region. |
| - description: RX region. |
| |
| reg-names: |
| items: |
| - const: tx |
| - const: rx |
| |
| interrupts: |
| maxItems: 1 |
| |
| tx-threshold: |
| minimum: 1 |
| maximum: 128 |
| |
| rx-threshold: |
| minimum: 1 |
| maximum: 128 |
| |
| required: |
| - compatible |
| - reg |
| - reg-names |
| - interrupts |
| - tx-threshold |
| - rx-threshold |
| |
| additionalProperties: false |
| |
| examples: |
| - | |
| #include <dt-bindings/interrupt-controller/arm-gic.h> |
| |
| tegra_utc: serial@c4e0000 { |
| compatible = "nvidia,tegra264-utc"; |
| reg = <0xc4e0000 0x8000>, <0xc4e8000 0x8000>; |
| reg-names = "tx", "rx"; |
| interrupts = <GIC_SPI 514 IRQ_TYPE_LEVEL_HIGH>; |
| tx-threshold = <4>; |
| rx-threshold = <4>; |
| }; |
