1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/serial/snps
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Synopsys DesignWare ABP UART
8
9 maintainers:
10 - Rob Herring <robh@kernel.org>
11
12 allOf:
13 - $ref: serial.yaml#
14 - $ref: rs485.yaml#
15
16 - if:
17 properties:
18 compatible:
19 contains:
20 const: starfive,jh7110-uart
21 then:
22 properties:
23 resets:
24 minItems: 2
25 else:
26 properties:
27 resets:
28 maxItems: 1
29
30 properties:
31 compatible:
32 oneOf:
33 - items:
34 - enum:
35 - renesas,r9a06g032-uart
36 - renesas,r9a06g033-uart
37 - const: renesas,rzn1-uart
38 - items:
39 - enum:
40 - rockchip,px30-uart
41 - rockchip,rk1808-uart
42 - rockchip,rk3036-uart
43 - rockchip,rk3066-uart
44 - rockchip,rk3128-uart
45 - rockchip,rk3188-uart
46 - rockchip,rk3288-uart
47 - rockchip,rk3308-uart
48 - rockchip,rk3328-uart
49 - rockchip,rk3368-uart
50 - rockchip,rk3399-uart
51 - rockchip,rk3568-uart
52 - rockchip,rk3588-uart
53 - rockchip,rv1108-uart
54 - rockchip,rv1126-uart
55 - const: snps,dw-apb-uart
56 - items:
57 - enum:
58 - brcm,bcm11351-dw-apb-uart
59 - brcm,bcm21664-dw-apb-uart
60 - const: snps,dw-apb-uart
61 - items:
62 - enum:
63 - starfive,jh7100-hsuart
64 - starfive,jh7100-uart
65 - starfive,jh7110-uart
66 - const: snps,dw-apb-uart
67 - const: snps,dw-apb-uart
68
69 reg:
70 maxItems: 1
71
72 interrupts:
73 maxItems: 1
74
75 clock-frequency: true
76
77 clocks:
78 minItems: 1
79 maxItems: 2
80
81 clock-names:
82 items:
83 - const: baudclk
84 - const: apb_pclk
85
86 dmas:
87 maxItems: 2
88
89 dma-names:
90 items:
91 - const: tx
92 - const: rx
93
94 snps,uart-16550-compatible:
95 description: reflects the value of UART_16
96 parameter. Define this if your UART does
97 type: boolean
98
99 resets:
100 minItems: 1
101 maxItems: 2
102
103 reg-shift: true
104
105 reg-io-width: true
106
107 dcd-override:
108 description: Override the DCD modem status
109 always be reported as active instead of
110 status register. Define this if your ser
111 pin.
112 type: boolean
113
114 dsr-override:
115 description: Override the DTS modem status
116 always be reported as active instead of
117 status register. Define this if your ser
118 pin.
119 type: boolean
120
121 cts-override:
122 description: Override the CTS modem status
123 always be reported as active instead of
124 status register. Define this if your ser
125 pin.
126 type: boolean
127
128 ri-override:
129 description: Override the RI modem status
130 be reported as inactive instead of being
131 register. Define this if your serial por
132 type: boolean
133
134 required:
135 - compatible
136 - reg
137
138 unevaluatedProperties: false
139
140 examples:
141 - |
142 serial@80230000 {
143 compatible = "snps,dw-apb-uart";
144 reg = <0x80230000 0x100>;
145 clock-frequency = <3686400>;
146 interrupts = <10>;
147 reg-shift = <2>;
148 reg-io-width = <4>;
149 dcd-override;
150 dsr-override;
151 cts-override;
152 ri-override;
153 };
154
155 - |
156 // Example with one clock:
157 serial@80230000 {
158 compatible = "snps,dw-apb-uart";
159 reg = <0x80230000 0x100>;
160 clocks = <&baudclk>;
161 interrupts = <10>;
162 reg-shift = <2>;
163 reg-io-width = <4>;
164 };
165
166 - |
167 // Example with two clocks:
168 serial@80230000 {
169 compatible = "snps,dw-apb-uart";
170 reg = <0x80230000 0x100>;
171 clocks = <&baudclk>, <&apb_pclk>;
172 clock-names = "baudclk", "apb_pclk";
173 interrupts = <10>;
174 reg-shift = <2>;
175 reg-io-width = <4>;
176 };
177 ...
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