1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/serial/brcm,bcm7271-uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Broadcom 8250 based serial port
8
9 maintainers:
10 - Al Cooper <alcooperx@gmail.com>
11
12 allOf:
13 - $ref: serial.yaml#
14
15 description: |+
16 The Broadcom UART is based on the basic 8250 UART but with
17 enhancements for more accurate high speed baud rates and support
18 for DMA.
19
20 properties:
21 compatible:
22 items:
23 - enum:
24 - brcm,bcm7271-uart
25 - brcm,bcm7278-uart
26
27 reg:
28 minItems: 1
29 maxItems: 5
30
31 reg-names:
32 description: The UART register block and optionally the DMA register blocks.
33 oneOf:
34 - items:
35 - const: uart
36 - items:
37 - const: uart
38 - const: dma_arb
39 - const: dma_rx
40 - const: dma_tx
41 - const: dma_intr2
42
43 clocks:
44 minItems: 1
45
46 clock-names:
47 const: sw_baud
48
49 interrupts:
50 minItems: 1
51 maxItems: 2
52
53 interrupt-names:
54 description: The UART interrupt and optionally the DMA interrupt.
55 minItems: 1
56 items:
57 - const: uart
58 - const: dma
59
60 required:
61 - compatible
62 - reg
63 - reg-names
64 - clocks
65 - clock-names
66 - interrupts
67 - interrupt-names
68
69 unevaluatedProperties: false
70
71 examples:
72 - |
73 serial@840d000 {
74 compatible = "brcm,bcm7271-uart";
75 reg = <0x840d000 0x20>;
76 reg-names = "uart";
77 interrupts = <0x0 0x62 0x4>;
78 interrupt-names = "uart";
79 clocks = <&scmi_clk 190>;
80 clock-names = "sw_baud";
81 };
82
83 serial@840e000 {
84 compatible = "brcm,bcm7271-uart";
85 reg = <0x840e000 0x20>,
86 <0x840e080 0x8>,
87 <0x840e100 0xa8>,
88 <0x840e200 0x4c>,
89 <0x840e300 0x30>;
90 reg-names = "uart", "dma_arb", "dma_rx", "dma_tx", "dma_intr2";
91 interrupts = <0x0 0x62 0x4>, <0x0 0x75 0x4>;
92 interrupt-names = "uart", "dma";
93 clocks = <&scmi_clk 190>;
94 clock-names = "sw_baud";
95 };
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