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/sams 4 $id: http://devicetree.org/schemas/serial/samsung_uart.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Samsung S3C, S5P, Exynos, and S5L (Appl 7 title: Samsung S3C, S5P, Exynos, and S5L (Apple SoC) SoC UART Controller
8 8
9 maintainers: 9 maintainers:
10 - Krzysztof Kozlowski <krzk@kernel.org> 10 - Krzysztof Kozlowski <krzk@kernel.org>
11 - Greg Kroah-Hartman <gregkh@linuxfoundation. 11 - Greg Kroah-Hartman <gregkh@linuxfoundation.org>
12 12
13 description: |+ 13 description: |+
14 Each Samsung UART should have an alias corre 14 Each Samsung UART should have an alias correctly numbered in the "aliases"
15 node, according to serialN format, where N i 15 node, according to serialN format, where N is the port number (non-negative
16 decimal integer) as specified by User's Manu 16 decimal integer) as specified by User's Manual of respective SoC.
17 17
18 properties: 18 properties:
19 compatible: 19 compatible:
20 oneOf: 20 oneOf:
21 - enum: 21 - enum:
22 - apple,s5l-uart 22 - apple,s5l-uart
23 - axis,artpec8-uart 23 - axis,artpec8-uart
24 - google,gs101-uart 24 - google,gs101-uart
25 - samsung,s3c6400-uart 25 - samsung,s3c6400-uart
26 - samsung,s5pv210-uart 26 - samsung,s5pv210-uart
27 - samsung,exynos4210-uart 27 - samsung,exynos4210-uart
28 - samsung,exynos5433-uart 28 - samsung,exynos5433-uart
29 - samsung,exynos850-uart 29 - samsung,exynos850-uart
30 - items: 30 - items:
31 - enum: 31 - enum:
32 - samsung,exynos7-uart 32 - samsung,exynos7-uart
33 - tesla,fsd-uart 33 - tesla,fsd-uart
34 - const: samsung,exynos4210-uart 34 - const: samsung,exynos4210-uart
35 - items: 35 - items:
36 - enum: 36 - enum:
37 - samsung,exynos7885-uart 37 - samsung,exynos7885-uart
38 - const: samsung,exynos5433-uart 38 - const: samsung,exynos5433-uart
39 - items: 39 - items:
40 - enum: 40 - enum:
41 - samsung,exynosautov9-uart 41 - samsung,exynosautov9-uart
42 - samsung,exynosautov920-uart 42 - samsung,exynosautov920-uart
43 - const: samsung,exynos850-uart 43 - const: samsung,exynos850-uart
44 44
45 reg: 45 reg:
46 maxItems: 1 46 maxItems: 1
47 47
48 reg-io-width: 48 reg-io-width:
49 description: | 49 description: |
50 The size (in bytes) of the IO accesses t 50 The size (in bytes) of the IO accesses that should be performed
51 on the device. 51 on the device.
52 enum: [ 1, 4 ] 52 enum: [ 1, 4 ]
53 53
54 clocks: 54 clocks:
55 minItems: 2 55 minItems: 2
56 maxItems: 5 56 maxItems: 5
57 57
58 clock-names: 58 clock-names:
59 minItems: 2 59 minItems: 2
60 maxItems: 5 60 maxItems: 5
61 61
62 dmas: 62 dmas:
63 items: 63 items:
64 - description: DMA controller phandle an 64 - description: DMA controller phandle and request line for RX
65 - description: DMA controller phandle an 65 - description: DMA controller phandle and request line for TX
66 66
67 dma-names: 67 dma-names:
68 items: 68 items:
69 - const: rx 69 - const: rx
70 - const: tx 70 - const: tx
71 71
72 interrupts: 72 interrupts:
73 description: RX interrupt and optionally T 73 description: RX interrupt and optionally TX interrupt.
74 minItems: 1 74 minItems: 1
75 maxItems: 2 75 maxItems: 2
76 76
77 power-domains: 77 power-domains:
78 maxItems: 1 78 maxItems: 1
79 79
80 samsung,uart-fifosize: 80 samsung,uart-fifosize:
81 description: The fifo size supported by th 81 description: The fifo size supported by the UART channel.
82 $ref: /schemas/types.yaml#/definitions/uin 82 $ref: /schemas/types.yaml#/definitions/uint32
83 enum: [16, 64, 256] 83 enum: [16, 64, 256]
84 84
85 required: 85 required:
86 - compatible 86 - compatible
87 - clocks 87 - clocks
88 - clock-names 88 - clock-names
89 - interrupts 89 - interrupts
90 - reg 90 - reg
91 91
92 allOf: 92 allOf:
93 - $ref: serial.yaml# 93 - $ref: serial.yaml#
94 94
95 - if: 95 - if:
96 properties: 96 properties:
97 compatible: 97 compatible:
98 contains: 98 contains:
99 enum: 99 enum:
100 - samsung,s3c6400-uart 100 - samsung,s3c6400-uart
101 then: 101 then:
102 properties: 102 properties:
103 clocks: 103 clocks:
104 minItems: 3 104 minItems: 3
105 maxItems: 3 105 maxItems: 3
106 106
107 clock-names: 107 clock-names:
108 items: 108 items:
109 - const: uart 109 - const: uart
110 - const: clk_uart_baud2 110 - const: clk_uart_baud2
111 - const: clk_uart_baud3 111 - const: clk_uart_baud3
112 112
113 else: 113 else:
114 properties: 114 properties:
115 clock-names: 115 clock-names:
116 minItems: 2 116 minItems: 2
117 items: 117 items:
118 - const: uart 118 - const: uart
119 - const: clk_uart_baud0 119 - const: clk_uart_baud0
120 - const: clk_uart_baud1 120 - const: clk_uart_baud1
121 - const: clk_uart_baud2 121 - const: clk_uart_baud2
122 - const: clk_uart_baud3 122 - const: clk_uart_baud3
123 123
124 - if: 124 - if:
125 properties: 125 properties:
126 compatible: 126 compatible:
127 contains: 127 contains:
128 enum: 128 enum:
129 - samsung,s5pv210-uart 129 - samsung,s5pv210-uart
130 then: 130 then:
131 properties: 131 properties:
132 clocks: 132 clocks:
133 minItems: 3 133 minItems: 3
134 maxItems: 3 134 maxItems: 3
135 135
136 clock-names: 136 clock-names:
137 minItems: 3 137 minItems: 3
138 maxItems: 3 138 maxItems: 3
139 139
140 - if: 140 - if:
141 properties: 141 properties:
142 compatible: 142 compatible:
143 contains: 143 contains:
144 enum: 144 enum:
145 - apple,s5l-uart 145 - apple,s5l-uart
146 - axis,artpec8-uart 146 - axis,artpec8-uart
147 - samsung,exynos4210-uart 147 - samsung,exynos4210-uart
148 - samsung,exynos5433-uart 148 - samsung,exynos5433-uart
149 then: 149 then:
150 properties: 150 properties:
151 clocks: 151 clocks:
152 maxItems: 2 152 maxItems: 2
153 153
154 clock-names: 154 clock-names:
155 maxItems: 2 155 maxItems: 2
156 156
157 - if: 157 - if:
158 properties: 158 properties:
159 compatible: 159 compatible:
160 contains: 160 contains:
161 enum: 161 enum:
162 - google,gs101-uart 162 - google,gs101-uart
163 then: 163 then:
164 required: 164 required:
165 - samsung,uart-fifosize 165 - samsung,uart-fifosize
166 properties: 166 properties:
167 reg-io-width: false 167 reg-io-width: false
168 168
169 clocks: 169 clocks:
170 maxItems: 2 170 maxItems: 2
171 171
172 clock-names: 172 clock-names:
173 maxItems: 2 173 maxItems: 2
174 174
175 unevaluatedProperties: false 175 unevaluatedProperties: false
176 176
177 examples: 177 examples:
178 - | 178 - |
179 #include <dt-bindings/clock/samsung,s3c64x 179 #include <dt-bindings/clock/samsung,s3c64xx-clock.h>
180 180
181 uart0: serial@7f005000 { 181 uart0: serial@7f005000 {
182 compatible = "samsung,s3c6400-uart"; 182 compatible = "samsung,s3c6400-uart";
183 reg = <0x7f005000 0x100>; 183 reg = <0x7f005000 0x100>;
184 interrupt-parent = <&vic1>; 184 interrupt-parent = <&vic1>;
185 interrupts = <5>; 185 interrupts = <5>;
186 clock-names = "uart", "clk_uart_baud2" 186 clock-names = "uart", "clk_uart_baud2",
187 "clk_uart_baud3"; 187 "clk_uart_baud3";
188 clocks = <&clocks PCLK_UART0>, <&clock 188 clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>,
189 <&clocks SCLK_UART>; 189 <&clocks SCLK_UART>;
190 samsung,uart-fifosize = <16>; 190 samsung,uart-fifosize = <16>;
191 }; 191 };
192 - | 192 - |
193 #include <dt-bindings/clock/google,gs101.h 193 #include <dt-bindings/clock/google,gs101.h>
194 #include <dt-bindings/interrupt-controller 194 #include <dt-bindings/interrupt-controller/arm-gic.h>
195 #include <dt-bindings/interrupt-controller 195 #include <dt-bindings/interrupt-controller/irq.h>
196 196
197 serial_0: serial@10a00000 { 197 serial_0: serial@10a00000 {
198 compatible = "google,gs101-uart"; 198 compatible = "google,gs101-uart";
199 reg = <0x10a00000 0xc0>; 199 reg = <0x10a00000 0xc0>;
200 clocks = <&cmu_peric0 CLK_GOUT_PERIC0_PE 200 clocks = <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_PCLK_0>,
201 <&cmu_peric0 CLK_GOUT_PERIC0_PE 201 <&cmu_peric0 CLK_GOUT_PERIC0_PERIC0_TOP1_IPCLK_0>;
202 clock-names = "uart", "clk_uart_baud0"; 202 clock-names = "uart", "clk_uart_baud0";
203 interrupts = <GIC_SPI 634 IRQ_TYPE_LEVEL 203 interrupts = <GIC_SPI 634 IRQ_TYPE_LEVEL_HIGH 0>;
204 pinctrl-0 = <&uart0_bus>; 204 pinctrl-0 = <&uart0_bus>;
205 pinctrl-names = "default"; 205 pinctrl-names = "default";
206 samsung,uart-fifosize = <256>; 206 samsung,uart-fifosize = <256>;
207 }; 207 };
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