0001 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
0002 %YAML 1.2
0003 ---
0004 $id: http://devicetree.org/schemas/serial/8250_omap.yaml#
0005 $schema: http://devicetree.org/meta-schemas/core.yaml#
0006
0007 title: Bindings for 8250 compliant UARTs on TI's OMAP2+ and K3 SoCs
0008
0009 maintainers:
0010 - Vignesh Raghavendra <vigneshr@ti.com>
0011
0012 allOf:
0013 - $ref: /schemas/serial/serial.yaml#
0014 - $ref: /schemas/serial/rs485.yaml#
0015
0016 properties:
0017 compatible:
0018 oneOf:
0019 - enum:
0020 - ti,am3352-uart
0021 - ti,am4372-uart
0022 - ti,am654-uart
0023 - ti,dra742-uart
0024 - ti,omap2-uart
0025 - ti,omap3-uart
0026 - ti,omap4-uart
0027 - items:
0028 - enum:
0029 - ti,am64-uart
0030 - ti,j721e-uart
0031 - const: ti,am654-uart
0032
0033 ti,hwmods:
0034 description:
0035 Must be "uart<n>", n being the instance number (1-based)
0036 This property is applicable only on legacy platforms mainly omap2/3
0037 and ti81xx and should not be used on other platforms.
0038 $ref: /schemas/types.yaml#/definitions/string
0039 deprecated: true
0040
0041 dmas:
0042 minItems: 1
0043 maxItems: 2
0044
0045 dma-names:
0046 items:
0047 - const: tx
0048 - const: rx
0049
0050 reg:
0051 maxItems: 1
0052
0053 interrupts:
0054 minItems: 1
0055 maxItems: 2
0056 description:
0057 First entry is module IRQ required for normal IO operation.
0058 Second entry is optional and corresponds to system wakeup IRQ
0059 where supported.
0060
0061 clocks:
0062 maxItems: 1
0063
0064 clock-names:
0065 const: fclk
0066
0067 rts-gpios: true
0068 cts-gpios: true
0069 dtr-gpios: true
0070 dsr-gpios: true
0071 rng-gpios: true
0072 dcd-gpios: true
0073 rs485-rts-delay: true
0074 rs485-rts-active-low: true
0075 rs485-rx-during-tx: true
0076 rs485-rts-active-high: true
0077 linux,rs485-enabled-at-boot-time: true
0078 rts-gpio: true
0079 power-domains: true
0080 clock-frequency: true
0081 current-speed: true
0082 overrun-throttle-ms: true
0083
0084 required:
0085 - compatible
0086 - reg
0087 - interrupts
0088
0089 unevaluatedProperties: false
0090
0091 if:
0092 properties:
0093 compatible:
0094 contains:
0095 enum:
0096 - ti,omap2-uart
0097 - ti,omap3-uart
0098 - ti,omap4-uart
0099
0100 then:
0101 properties:
0102 ti,hwmods:
0103 items:
0104 - pattern: "^uart([1-9])$"
0105
0106 else:
0107 properties:
0108 ti,hwmods: false
0109
0110 examples:
0111 - |
0112 serial@49042000 {
0113 compatible = "ti,omap3-uart";
0114 reg = <0x49042000 0x400>;
0115 interrupts = <80>;
0116 dmas = <&sdma 81 &sdma 82>;
0117 dma-names = "tx", "rx";
0118 ti,hwmods = "uart4";
0119 clock-frequency = <48000000>;
0120 };
