Documentation/devicetree/bindings/serial/renesas,em-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/renesas,em-uart.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Renesas EMMA Mobile UART Interface
   8
   9 maintainers:
  10   - Magnus Damm <magnus.damm@gmail.com>
  11
  12 properties:
  13   compatible:
  14     oneOf:
  15       - items:
  16           - enum:
  17               - renesas,r9a09g011-uart    # RZ/V2M
  18           - const: renesas,em-uart        # generic EMMA Mobile compatible UART
  19
  20       - items:
  21           - const: renesas,em-uart        # generic EMMA Mobile compatible UART
  22
  23   reg:
  24     maxItems: 1
  25
  26   interrupts:
  27     maxItems: 1
  28
  29   clocks:
  30     minItems: 1
  31     items:
  32       - description: UART functional clock
  33       - description: Internal clock to access the registers
  34
  35   clock-names:
  36     minItems: 1
  37     items:
  38       - const: sclk
  39       - const: pclk
  40
  41 required:
  42   - compatible
  43   - reg
  44   - interrupts
  45   - clocks
  46   - clock-names
  47
  48 allOf:
  49   - $ref: serial.yaml#
  50
  51   - if:
  52       properties:
  53         compatible:
  54           contains:
  55             const: renesas,r9a09g011-uart
  56     then:
  57       properties:
  58         clocks:
  59           minItems: 2
  60         clock-names:
  61           minItems: 2
  62
  63 unevaluatedProperties: false
  64
  65 examples:
  66   - |
  67     #include <dt-bindings/interrupt-controller/arm-gic.h>
  68     uart0: serial@e1020000 {
  69         compatible = "renesas,em-uart";
  70         reg = <0xe1020000 0x38>;
  71         interrupts = <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>;
  72         clocks = <&usia_u0_sclk>;
  73         clock-names = "sclk";
  74     };