8250_omap.yaml

  1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2%YAML 1.2
  3---
  4$id: http://devicetree.org/schemas/serial/8250_omap.yaml#
  5$schema: http://devicetree.org/meta-schemas/core.yaml#
  6
  7title: 8250 compliant UARTs on TI's OMAP2+ and K3 SoCs
  8
  9maintainers:
 10  - Vignesh Raghavendra <vigneshr@ti.com>
 11
 12allOf:
 13  - $ref: /schemas/serial/serial.yaml#
 14  - $ref: /schemas/serial/rs485.yaml#
 15
 16properties:
 17  compatible:
 18    oneOf:
 19      - enum:
 20          - ti,am3352-uart
 21          - ti,am4372-uart
 22          - ti,am654-uart
 23          - ti,dra742-uart
 24          - ti,omap2-uart
 25          - ti,omap3-uart
 26          - ti,omap4-uart
 27      - items:
 28          - enum:
 29              - ti,am64-uart
 30              - ti,j721e-uart
 31          - const: ti,am654-uart
 32
 33  ti,hwmods:
 34    description:
 35      Must be "uart<n>", n being the instance number (1-based)
 36      This property is applicable only on legacy platforms mainly omap2/3
 37      and ti81xx and should not be used on other platforms.
 38    $ref: /schemas/types.yaml#/definitions/string
 39    deprecated: true
 40
 41  dmas:
 42    minItems: 1
 43    maxItems: 2
 44
 45  dma-names:
 46    items:
 47      - const: tx
 48      - const: rx
 49
 50  reg:
 51    maxItems: 1
 52
 53  interrupts:
 54    minItems: 1
 55    maxItems: 2
 56    description:
 57      First entry is module IRQ required for normal IO operation.
 58      Second entry is optional and corresponds to system wakeup IRQ
 59      where supported.
 60
 61  clocks:
 62    maxItems: 1
 63
 64  clock-names:
 65    const: fclk
 66
 67  rs485-rts-active-high: true
 68  power-domains: true
 69  clock-frequency: true
 70  current-speed: true
 71  overrun-throttle-ms: true
 72  wakeup-source: true
 73
 74  pinctrl-0:
 75    description: Default pinctrl state
 76
 77  pinctrl-1:
 78    description: Wakeup pinctrl state
 79
 80  pinctrl-names:
 81    description:
 82      When present should contain at least "default" describing the default pin
 83      states. The second state called "wakeup" describes the pins in their
 84      wakeup configuration required to exit sleep states.
 85    minItems: 1
 86    items:
 87      - const: default
 88      - const: wakeup
 89
 90required:
 91  - compatible
 92  - reg
 93  - interrupts
 94
 95unevaluatedProperties: false
 96
 97if:
 98  properties:
 99    compatible:
100      contains:
101        enum:
102          - ti,omap2-uart
103          - ti,omap3-uart
104          - ti,omap4-uart
105
106then:
107  properties:
108    ti,hwmods:
109      items:
110        - pattern: "^uart([1-9])$"
111
112else:
113  properties:
114    ti,hwmods: false
115
116examples:
117  - |
118    serial@49042000 {
119        compatible = "ti,omap3-uart";
120        reg = <0x49042000 0x400>;
121        interrupts = <80>;
122        dmas = <&sdma 81 &sdma 82>;
123        dma-names = "tx", "rx";
124        ti,hwmods = "uart4";
125        clock-frequency = <48000000>;
126    };