8250_omap.yaml

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    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 
    7 title: Bindings for 8250 compliant UARTs on TI's OMAP2+ and K3 SoCs
    8 
    9 maintainers:
   10   - Vignesh Raghavendra <vigneshr@ti.com>
   11 
   12 allOf:
   13   - $ref: /schemas/serial/serial.yaml#
   14   - $ref: /schemas/serial/rs485.yaml#
   15 
   16 properties:
   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     $ref: /schemas/types.yaml#/definitions/string
   39     deprecated: true
   40 
   41   dmas:
   42     minItems: 1
   43     maxItems: 2
   44 
   45   dma-names:
   46     items:
   47       - const: tx
   48       - const: rx
   49 
   50   reg:
   51     maxItems: 1
   52 
   53   interrupts:
   54     minItems: 1
   55     maxItems: 2
   56     description:
   57       First entry is module IRQ required for normal IO operation.
   58       Second entry is optional and corresponds to system wakeup IRQ
   59       where supported.
   60 
   61   clocks:
   62     maxItems: 1
   63 
   64   clock-names:
   65     const: fclk
   66 
   67   rts-gpios: true
   68   cts-gpios: true
   69   dtr-gpios: true
   70   dsr-gpios: true
   71   rng-gpios: true
   72   dcd-gpios: true
   73   rs485-rts-delay: true
   74   rs485-rts-active-low: true
   75   rs485-rx-during-tx: true
   76   rs485-rts-active-high: true
   77   linux,rs485-enabled-at-boot-time: true
   78   rts-gpio: true
   79   power-domains: true
   80   clock-frequency: true
   81   current-speed: true
   82   overrun-throttle-ms: true
   83 
   84 required:
   85   - compatible
   86   - reg
   87   - interrupts
   88 
   89 unevaluatedProperties: false
   90 
   91 if:
   92   properties:
   93     compatible:
   94       contains:
   95         enum:
   96           - ti,omap2-uart
   97           - ti,omap3-uart
   98           - ti,omap4-uart
   99 
  100 then:
  101   properties:
  102     ti,hwmods:
  103       items:
  104         - pattern: "^uart([1-9])$"
  105 
  106 else:
  107   properties:
  108     ti,hwmods: false
  109 
  110 examples:
  111   - |
  112           serial@49042000 {
  113             compatible = "ti,omap3-uart";
  114             reg = <0x49042000 0x400>;
  115             interrupts = <80>;
  116             dmas = <&sdma 81 &sdma 82>;
  117             dma-names = "tx", "rx";
  118             ti,hwmods = "uart4";
  119             clock-frequency = <48000000>;
  120           };

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sys/contrib/device-tree/Bindings/serial/8250_omap.yaml