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 items:
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 - samsung,s3c2410-uart
>> 25 - samsung,s3c2412-uart
>> 26 - samsung,s3c2440-uart
25 - samsung,s3c6400-uart 27 - samsung,s3c6400-uart
26 - samsung,s5pv210-uart 28 - samsung,s5pv210-uart
27 - samsung,exynos4210-uart 29 - samsung,exynos4210-uart
28 - samsung,exynos5433-uart 30 - samsung,exynos5433-uart
29 - samsung,exynos850-uart 31 - samsung,exynos850-uart
30 - items: <<
31 - enum: <<
32 - samsung,exynos7-uart <<
33 - tesla,fsd-uart <<
34 - const: samsung,exynos4210-uart <<
35 - items: <<
36 - enum: <<
37 - samsung,exynos7885-uart <<
38 - const: samsung,exynos5433-uart <<
39 - items: <<
40 - enum: <<
41 - samsung,exynosautov9-uart <<
42 - samsung,exynosautov920-uart <<
43 - const: samsung,exynos850-uart <<
44 32
45 reg: 33 reg:
46 maxItems: 1 34 maxItems: 1
47 35
48 reg-io-width: 36 reg-io-width:
49 description: | 37 description: |
50 The size (in bytes) of the IO accesses t 38 The size (in bytes) of the IO accesses that should be performed
51 on the device. 39 on the device.
>> 40 $ref: /schemas/types.yaml#/definitions/uint32
52 enum: [ 1, 4 ] 41 enum: [ 1, 4 ]
53 42
54 clocks: 43 clocks:
55 minItems: 2 44 minItems: 2
56 maxItems: 5 45 maxItems: 5
57 46
58 clock-names: 47 clock-names:
>> 48 description: N = 0 is allowed for SoCs without internal baud clock mux.
59 minItems: 2 49 minItems: 2
60 maxItems: 5 !! 50 items:
>> 51 - const: uart
>> 52 - pattern: '^clk_uart_baud[0-3]$'
>> 53 - pattern: '^clk_uart_baud[0-3]$'
>> 54 - pattern: '^clk_uart_baud[0-3]$'
>> 55 - pattern: '^clk_uart_baud[0-3]$'
61 56
62 dmas: 57 dmas:
63 items: 58 items:
64 - description: DMA controller phandle an 59 - description: DMA controller phandle and request line for RX
65 - description: DMA controller phandle an 60 - description: DMA controller phandle and request line for TX
66 61
67 dma-names: 62 dma-names:
68 items: 63 items:
69 - const: rx 64 - const: rx
70 - const: tx 65 - const: tx
71 66
72 interrupts: 67 interrupts:
73 description: RX interrupt and optionally T 68 description: RX interrupt and optionally TX interrupt.
74 minItems: 1 69 minItems: 1
75 maxItems: 2 70 maxItems: 2
76 71
77 power-domains: <<
78 maxItems: 1 <<
79 <<
80 samsung,uart-fifosize: 72 samsung,uart-fifosize:
81 description: The fifo size supported by th 73 description: The fifo size supported by the UART channel.
82 $ref: /schemas/types.yaml#/definitions/uin 74 $ref: /schemas/types.yaml#/definitions/uint32
83 enum: [16, 64, 256] 75 enum: [16, 64, 256]
84 76
85 required: 77 required:
86 - compatible 78 - compatible
87 - clocks 79 - clocks
88 - clock-names 80 - clock-names
89 - interrupts 81 - interrupts
90 - reg 82 - reg
91 83
>> 84 unevaluatedProperties: false
>> 85
92 allOf: 86 allOf:
93 - $ref: serial.yaml# 87 - $ref: serial.yaml#
94 88
95 - if: 89 - if:
96 properties: 90 properties:
97 compatible: 91 compatible:
98 contains: 92 contains:
99 enum: 93 enum:
100 - samsung,s3c6400-uart !! 94 - samsung,s3c2410-uart
>> 95 - samsung,s5pv210-uart
101 then: 96 then:
102 properties: 97 properties:
103 clocks: 98 clocks:
104 minItems: 3 !! 99 minItems: 2
105 maxItems: 3 100 maxItems: 3
106 <<
107 clock-names: <<
108 items: <<
109 - const: uart <<
110 - const: clk_uart_baud2 <<
111 - const: clk_uart_baud3 <<
112 <<
113 else: <<
114 properties: <<
115 clock-names: 101 clock-names:
116 minItems: 2 102 minItems: 2
117 items: 103 items:
118 - const: uart 104 - const: uart
119 - const: clk_uart_baud0 !! 105 - pattern: '^clk_uart_baud[0-1]$'
120 - const: clk_uart_baud1 !! 106 - pattern: '^clk_uart_baud[0-1]$'
121 - const: clk_uart_baud2 <<
122 - const: clk_uart_baud3 <<
123 <<
124 - if: <<
125 properties: <<
126 compatible: <<
127 contains: <<
128 enum: <<
129 - samsung,s5pv210-uart <<
130 then: <<
131 properties: <<
132 clocks: <<
133 minItems: 3 <<
134 maxItems: 3 <<
135 <<
136 clock-names: <<
137 minItems: 3 <<
138 maxItems: 3 <<
139 107
140 - if: 108 - if:
141 properties: 109 properties:
142 compatible: 110 compatible:
143 contains: 111 contains:
144 enum: 112 enum:
145 - apple,s5l-uart 113 - apple,s5l-uart
146 - axis,artpec8-uart 114 - axis,artpec8-uart
147 - samsung,exynos4210-uart 115 - samsung,exynos4210-uart
148 - samsung,exynos5433-uart 116 - samsung,exynos5433-uart
149 then: 117 then:
150 properties: 118 properties:
151 clocks: 119 clocks:
152 maxItems: 2 120 maxItems: 2
153 <<
154 clock-names: <<
155 maxItems: 2 <<
156 <<
157 - if: <<
158 properties: <<
159 compatible: <<
160 contains: <<
161 enum: <<
162 - google,gs101-uart <<
163 then: <<
164 required: <<
165 - samsung,uart-fifosize <<
166 properties: <<
167 reg-io-width: false <<
168 <<
169 clocks: <<
170 maxItems: 2 <<
171 <<
172 clock-names: 121 clock-names:
173 maxItems: 2 !! 122 items:
174 !! 123 - const: uart
175 unevaluatedProperties: false !! 124 - const: clk_uart_baud0
176 125
177 examples: 126 examples:
178 - | 127 - |
179 #include <dt-bindings/clock/samsung,s3c64x 128 #include <dt-bindings/clock/samsung,s3c64xx-clock.h>
180 129
181 uart0: serial@7f005000 { 130 uart0: serial@7f005000 {
182 compatible = "samsung,s3c6400-uart"; 131 compatible = "samsung,s3c6400-uart";
183 reg = <0x7f005000 0x100>; 132 reg = <0x7f005000 0x100>;
184 interrupt-parent = <&vic1>; 133 interrupt-parent = <&vic1>;
185 interrupts = <5>; 134 interrupts = <5>;
186 clock-names = "uart", "clk_uart_baud2" 135 clock-names = "uart", "clk_uart_baud2",
187 "clk_uart_baud3"; 136 "clk_uart_baud3";
188 clocks = <&clocks PCLK_UART0>, <&clock 137 clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>,
189 <&clocks SCLK_UART>; 138 <&clocks SCLK_UART>;
190 samsung,uart-fifosize = <16>; 139 samsung,uart-fifosize = <16>;
191 }; <<
192 - | <<
193 #include <dt-bindings/clock/google,gs101.h <<
194 #include <dt-bindings/interrupt-controller <<
195 #include <dt-bindings/interrupt-controller <<
196 <<
197 serial_0: serial@10a00000 { <<
198 compatible = "google,gs101-uart"; <<
199 reg = <0x10a00000 0xc0>; <<
200 clocks = <&cmu_peric0 CLK_GOUT_PERIC0_PE <<
201 <&cmu_peric0 CLK_GOUT_PERIC0_PE <<
202 clock-names = "uart", "clk_uart_baud0"; <<
203 interrupts = <GIC_SPI 634 IRQ_TYPE_LEVEL <<
204 pinctrl-0 = <&uart0_bus>; <<
205 pinctrl-names = "default"; <<
206 samsung,uart-fifosize = <256>; <<
207 }; 140 };
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