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review.shift-gmbh.com / SHIFTPHONES / mainline / linux / ae9fdd23e6284979ba9829a2e7acdf295d554a32 / . / Documentation / devicetree / bindings / serial / snps-dw-apb-uart.yaml
blob: b962f8db4ce973562db98443952fe11e1b4543bc [file] [log] [blame]
Rob Herringdf230072019-01-14 11:29:29 -0600[diff] [blame]1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/serial/snps-dw-apb-uart.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Synopsys DesignWare ABP UART
8
9maintainers:
10 - Rob Herring <robh@kernel.org>
11
12allOf:
13 - $ref: /schemas/serial.yaml#
14
15properties:
16 compatible:
17 oneOf:
18 - items:
19 - enum:
Rob Herring896efcc2019-01-14 11:29:30 -0600[diff] [blame]20 - renesas,r9a06g032-uart
21 - renesas,r9a06g033-uart
22 - const: renesas,rzn1-uart
23 - items:
24 - enum:
Rob Herringdf230072019-01-14 11:29:29 -0600[diff] [blame]25 - rockchip,px30-uart
26 - rockchip,rk3036-uart
27 - rockchip,rk3066-uart
28 - rockchip,rk3188-uart
29 - rockchip,rk3288-uart
Johan Jonkerae9fdd22020-03-02 14:39:10 +0100[diff] [blame^]30 - rockchip,rk3308-uart
Rob Herringdf230072019-01-14 11:29:29 -0600[diff] [blame]31 - rockchip,rk3328-uart
32 - rockchip,rk3368-uart
33 - rockchip,rk3399-uart
34 - rockchip,rv1108-uart
35 - const: snps,dw-apb-uart
36 - items:
37 - enum:
38 - brcm,bcm11351-dw-apb-uart
39 - brcm,bcm21664-dw-apb-uart
40 - const: snps,dw-apb-uart
41 - const: snps,dw-apb-uart
42
43 reg:
44 maxItems: 1
45
46 interrupts:
47 maxItems: 1
48
49 clock-frequency: true
50
51 clocks:
52 minItems: 1
53 maxItems: 2
54
55 clock-names:
56 items:
57 - const: baudclk
58 - const: apb_pclk
59
60 snps,uart-16550-compatible:
61 description: reflects the value of UART_16550_COMPATIBLE configuration
62 parameter. Define this if your UART does not implement the busy functionality.
63 type: boolean
64
65 resets:
66 maxItems: 1
67
68 reg-shift: true
69
70 reg-io-width: true
71
72 dcd-override:
73 description: Override the DCD modem status signal. This signal will
74 always be reported as active instead of being obtained from the modem
75 status register. Define this if your serial port does not use this
76 pin.
77 type: boolean
78
79 dsr-override:
80 description: Override the DTS modem status signal. This signal will
81 always be reported as active instead of being obtained from the modem
82 status register. Define this if your serial port does not use this
83 pin.
84 type: boolean
85
86 cts-override:
87 description: Override the CTS modem status signal. This signal will
88 always be reported as active instead of being obtained from the modem
89 status register. Define this if your serial port does not use this
90 pin.
91 type: boolean
92
93 ri-override:
94 description: Override the RI modem status signal. This signal will always
95 be reported as inactive instead of being obtained from the modem status
96 register. Define this if your serial port does not use this pin.
97 type: boolean
98
99required:
100 - compatible
101 - reg
102 - interrupts
103
104examples:
105 - |
106 serial@80230000 {
107 compatible = "snps,dw-apb-uart";
108 reg = <0x80230000 0x100>;
109 clock-frequency = <3686400>;
110 interrupts = <10>;
111 reg-shift = <2>;
112 reg-io-width = <4>;
113 dcd-override;
114 dsr-override;
115 cts-override;
116 ri-override;
117 };
118
119 - |
120 // Example with one clock:
121 serial@80230000 {
122 compatible = "snps,dw-apb-uart";
123 reg = <0x80230000 0x100>;
124 clocks = <&baudclk>;
125 interrupts = <10>;
126 reg-shift = <2>;
127 reg-io-width = <4>;
128 };
129
130 - |
131 // Example with two clocks:
132 serial@80230000 {
133 compatible = "snps,dw-apb-uart";
134 reg = <0x80230000 0x100>;
135 clocks = <&baudclk>, <&apb_pclk>;
136 clock-names = "baudclk", "apb_pclk";
137 interrupts = <10>;
138 reg-shift = <2>;
139 reg-io-width = <4>;
140 };
141...