1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/serial/snps 4 $id: http://devicetree.org/schemas/serial/snps-dw-apb-uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Synopsys DesignWare ABP UART 7 title: Synopsys DesignWare ABP UART
8 8
9 maintainers: 9 maintainers:
10 - Rob Herring <robh@kernel.org> 10 - Rob Herring <robh@kernel.org>
11 11
12 allOf: 12 allOf:
13 - $ref: serial.yaml# 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 14
30 properties: 15 properties:
31 compatible: 16 compatible:
32 oneOf: 17 oneOf:
33 - items: 18 - items:
34 - enum: 19 - enum:
35 - renesas,r9a06g032-uart 20 - renesas,r9a06g032-uart
36 - renesas,r9a06g033-uart 21 - renesas,r9a06g033-uart
37 - const: renesas,rzn1-uart 22 - const: renesas,rzn1-uart
38 - items: 23 - items:
39 - enum: 24 - enum:
40 - rockchip,px30-uart 25 - rockchip,px30-uart
41 - rockchip,rk1808-uart 26 - rockchip,rk1808-uart
42 - rockchip,rk3036-uart 27 - rockchip,rk3036-uart
43 - rockchip,rk3066-uart 28 - rockchip,rk3066-uart
44 - rockchip,rk3128-uart <<
45 - rockchip,rk3188-uart 29 - rockchip,rk3188-uart
46 - rockchip,rk3288-uart 30 - rockchip,rk3288-uart
47 - rockchip,rk3308-uart 31 - rockchip,rk3308-uart
48 - rockchip,rk3328-uart 32 - rockchip,rk3328-uart
49 - rockchip,rk3368-uart 33 - rockchip,rk3368-uart
50 - rockchip,rk3399-uart 34 - rockchip,rk3399-uart
51 - rockchip,rk3568-uart 35 - rockchip,rk3568-uart
52 - rockchip,rk3588-uart <<
53 - rockchip,rv1108-uart 36 - rockchip,rv1108-uart
54 - rockchip,rv1126-uart <<
55 - const: snps,dw-apb-uart 37 - const: snps,dw-apb-uart
56 - items: 38 - items:
57 - enum: 39 - enum:
58 - brcm,bcm11351-dw-apb-uart 40 - brcm,bcm11351-dw-apb-uart
59 - brcm,bcm21664-dw-apb-uart 41 - brcm,bcm21664-dw-apb-uart
60 - const: snps,dw-apb-uart 42 - 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 43 - const: snps,dw-apb-uart
68 44
69 reg: 45 reg:
70 maxItems: 1 46 maxItems: 1
71 47
72 interrupts: 48 interrupts:
73 maxItems: 1 49 maxItems: 1
74 50
75 clock-frequency: true 51 clock-frequency: true
76 52
77 clocks: 53 clocks:
78 minItems: 1 54 minItems: 1
79 maxItems: 2 55 maxItems: 2
80 56
81 clock-names: 57 clock-names:
82 items: 58 items:
83 - const: baudclk 59 - const: baudclk
84 - const: apb_pclk 60 - const: apb_pclk
85 61
86 dmas: <<
87 maxItems: 2 <<
88 <<
89 dma-names: <<
90 items: <<
91 - const: tx <<
92 - const: rx <<
93 <<
94 snps,uart-16550-compatible: 62 snps,uart-16550-compatible:
95 description: reflects the value of UART_16 63 description: reflects the value of UART_16550_COMPATIBLE configuration
96 parameter. Define this if your UART does 64 parameter. Define this if your UART does not implement the busy functionality.
97 type: boolean 65 type: boolean
98 66
99 resets: 67 resets:
100 minItems: 1 !! 68 maxItems: 1
101 maxItems: 2 <<
102 69
103 reg-shift: true 70 reg-shift: true
104 71
105 reg-io-width: true 72 reg-io-width: true
106 73
107 dcd-override: 74 dcd-override:
108 description: Override the DCD modem status 75 description: Override the DCD modem status signal. This signal will
109 always be reported as active instead of 76 always be reported as active instead of being obtained from the modem
110 status register. Define this if your ser 77 status register. Define this if your serial port does not use this
111 pin. 78 pin.
112 type: boolean 79 type: boolean
113 80
114 dsr-override: 81 dsr-override:
115 description: Override the DTS modem status 82 description: Override the DTS modem status signal. This signal will
116 always be reported as active instead of 83 always be reported as active instead of being obtained from the modem
117 status register. Define this if your ser 84 status register. Define this if your serial port does not use this
118 pin. 85 pin.
119 type: boolean 86 type: boolean
120 87
121 cts-override: 88 cts-override:
122 description: Override the CTS modem status 89 description: Override the CTS modem status signal. This signal will
123 always be reported as active instead of 90 always be reported as active instead of being obtained from the modem
124 status register. Define this if your ser 91 status register. Define this if your serial port does not use this
125 pin. 92 pin.
126 type: boolean 93 type: boolean
127 94
128 ri-override: 95 ri-override:
129 description: Override the RI modem status 96 description: Override the RI modem status signal. This signal will always
130 be reported as inactive instead of being 97 be reported as inactive instead of being obtained from the modem status
131 register. Define this if your serial por 98 register. Define this if your serial port does not use this pin.
132 type: boolean 99 type: boolean
133 100
134 required: 101 required:
135 - compatible 102 - compatible
136 - reg 103 - reg
>> 104 - interrupts
137 105
138 unevaluatedProperties: false 106 unevaluatedProperties: false
139 107
140 examples: 108 examples:
141 - | 109 - |
142 serial@80230000 { 110 serial@80230000 {
143 compatible = "snps,dw-apb-uart"; 111 compatible = "snps,dw-apb-uart";
144 reg = <0x80230000 0x100>; 112 reg = <0x80230000 0x100>;
145 clock-frequency = <3686400>; 113 clock-frequency = <3686400>;
146 interrupts = <10>; 114 interrupts = <10>;
147 reg-shift = <2>; 115 reg-shift = <2>;
148 reg-io-width = <4>; 116 reg-io-width = <4>;
149 dcd-override; 117 dcd-override;
150 dsr-override; 118 dsr-override;
151 cts-override; 119 cts-override;
152 ri-override; 120 ri-override;
153 }; 121 };
154 122
155 - | 123 - |
156 // Example with one clock: 124 // Example with one clock:
157 serial@80230000 { 125 serial@80230000 {
158 compatible = "snps,dw-apb-uart"; 126 compatible = "snps,dw-apb-uart";
159 reg = <0x80230000 0x100>; 127 reg = <0x80230000 0x100>;
160 clocks = <&baudclk>; 128 clocks = <&baudclk>;
161 interrupts = <10>; 129 interrupts = <10>;
162 reg-shift = <2>; 130 reg-shift = <2>;
163 reg-io-width = <4>; 131 reg-io-width = <4>;
164 }; 132 };
165 133
166 - | 134 - |
167 // Example with two clocks: 135 // Example with two clocks:
168 serial@80230000 { 136 serial@80230000 {
169 compatible = "snps,dw-apb-uart"; 137 compatible = "snps,dw-apb-uart";
170 reg = <0x80230000 0x100>; 138 reg = <0x80230000 0x100>;
171 clocks = <&baudclk>, <&apb_pclk>; 139 clocks = <&baudclk>, <&apb_pclk>;
172 clock-names = "baudclk", "apb_pclk"; 140 clock-names = "baudclk", "apb_pclk";
173 interrupts = <10>; 141 interrupts = <10>;
174 reg-shift = <2>; 142 reg-shift = <2>;
175 reg-io-width = <4>; 143 reg-io-width = <4>;
176 }; 144 };
177 ... 145 ...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.