marvell,armada-3700-uart.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/serial/marvell,armada-3700-uart.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: Marvell Armada-3700 UART
  8
  9maintainers:
 10  - Pali Rohár <pali@kernel.org>
 11
 12description:
 13  Marvell UART is a non standard UART used in some of Marvell EBU SoCs (e.g.
 14  Armada-3700).
 15
 16properties:
 17  compatible:
 18    enum:
 19      - marvell,armada-3700-uart
 20      - marvell,armada-3700-uart-ext
 21
 22  reg:
 23    maxItems: 1
 24
 25  clocks:
 26    maxItems: 1
 27    description:
 28      UART reference clock used to derive the baud rate. If absent, only fixed
 29      baud rate from the bootloader is supported.
 30
 31  interrupts:
 32    minItems: 2
 33    items:
 34      - description: UART sum interrupt
 35      - description: UART TX interrupt
 36      - description: UART RX interrupt
 37
 38  interrupt-names:
 39    minItems: 2
 40    maxItems: 3
 41
 42required:
 43  - compatible
 44  - reg
 45  - interrupts
 46  - interrupt-names
 47
 48unevaluatedProperties: false
 49
 50allOf:
 51  - $ref: /schemas/serial/serial.yaml#
 52  - if:
 53      properties:
 54        compatible:
 55          const: marvell,armada-3700-uart-ext
 56    then:
 57      properties:
 58        interrupts:
 59          maxItems: 2
 60
 61        interrupt-names:
 62          items:
 63            - const: uart-tx
 64            - const: uart-rx
 65    else:
 66      properties:
 67        interrupts:
 68          minItems: 3
 69
 70        interrupt-names:
 71          items:
 72            - const: uart-sum
 73            - const: uart-tx
 74            - const: uart-rx
 75
 76examples:
 77  - |
 78    #include <dt-bindings/interrupt-controller/arm-gic.h>
 79
 80    serial@12000 {
 81        compatible = "marvell,armada-3700-uart";
 82        reg = <0x12000 0x18>;
 83        clocks = <&uartclk 0>;
 84        interrupts =
 85            <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
 86            <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
 87            <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
 88        interrupt-names = "uart-sum", "uart-tx", "uart-rx";
 89    };
 90
 91  - |
 92    #include <dt-bindings/interrupt-controller/arm-gic.h>
 93
 94    serial@12200 {
 95        compatible = "marvell,armada-3700-uart-ext";
 96        reg = <0x12200 0x30>;
 97        clocks = <&uartclk 1>;
 98        interrupts =
 99            <GIC_SPI 30 IRQ_TYPE_EDGE_RISING>,
100            <GIC_SPI 31 IRQ_TYPE_EDGE_RISING>;
101        interrupt-names = "uart-tx", "uart-rx";
102    };