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 - items:
>> 22 - const: samsung,exynosautov9-uart
>> 23 - const: samsung,exynos850-uart
21 - enum: 24 - enum:
22 - apple,s5l-uart 25 - apple,s5l-uart
23 - axis,artpec8-uart 26 - axis,artpec8-uart
24 - google,gs101-uart !! 27 - samsung,s3c2410-uart
>> 28 - samsung,s3c2412-uart
>> 29 - samsung,s3c2440-uart
25 - samsung,s3c6400-uart 30 - samsung,s3c6400-uart
26 - samsung,s5pv210-uart 31 - samsung,s5pv210-uart
27 - samsung,exynos4210-uart 32 - samsung,exynos4210-uart
28 - samsung,exynos5433-uart 33 - samsung,exynos5433-uart
29 - samsung,exynos850-uart 34 - 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 35
45 reg: 36 reg:
46 maxItems: 1 37 maxItems: 1
47 38
48 reg-io-width: 39 reg-io-width:
49 description: | 40 description: |
50 The size (in bytes) of the IO accesses t 41 The size (in bytes) of the IO accesses that should be performed
51 on the device. 42 on the device.
52 enum: [ 1, 4 ] 43 enum: [ 1, 4 ]
53 44
54 clocks: 45 clocks:
55 minItems: 2 46 minItems: 2
56 maxItems: 5 47 maxItems: 5
57 48
58 clock-names: 49 clock-names:
>> 50 description: N = 0 is allowed for SoCs without internal baud clock mux.
59 minItems: 2 51 minItems: 2
60 maxItems: 5 !! 52 items:
>> 53 - const: uart
>> 54 - pattern: '^clk_uart_baud[0-3]$'
>> 55 - pattern: '^clk_uart_baud[0-3]$'
>> 56 - pattern: '^clk_uart_baud[0-3]$'
>> 57 - pattern: '^clk_uart_baud[0-3]$'
61 58
62 dmas: 59 dmas:
63 items: 60 items:
64 - description: DMA controller phandle an 61 - description: DMA controller phandle and request line for RX
65 - description: DMA controller phandle an 62 - description: DMA controller phandle and request line for TX
66 63
67 dma-names: 64 dma-names:
68 items: 65 items:
69 - const: rx 66 - const: rx
70 - const: tx 67 - const: tx
71 68
72 interrupts: 69 interrupts:
73 description: RX interrupt and optionally T 70 description: RX interrupt and optionally TX interrupt.
74 minItems: 1 71 minItems: 1
75 maxItems: 2 72 maxItems: 2
76 73
77 power-domains: 74 power-domains:
78 maxItems: 1 75 maxItems: 1
79 76
80 samsung,uart-fifosize: 77 samsung,uart-fifosize:
81 description: The fifo size supported by th 78 description: The fifo size supported by the UART channel.
82 $ref: /schemas/types.yaml#/definitions/uin 79 $ref: /schemas/types.yaml#/definitions/uint32
83 enum: [16, 64, 256] 80 enum: [16, 64, 256]
84 81
85 required: 82 required:
86 - compatible 83 - compatible
87 - clocks 84 - clocks
88 - clock-names 85 - clock-names
89 - interrupts 86 - interrupts
90 - reg 87 - reg
91 88
>> 89 unevaluatedProperties: false
>> 90
92 allOf: 91 allOf:
93 - $ref: serial.yaml# 92 - $ref: serial.yaml#
94 93
95 - if: 94 - if:
96 properties: 95 properties:
97 compatible: 96 compatible:
98 contains: 97 contains:
99 enum: 98 enum:
100 - samsung,s3c6400-uart !! 99 - samsung,s3c2410-uart
>> 100 - samsung,s5pv210-uart
101 then: 101 then:
102 properties: 102 properties:
103 clocks: 103 clocks:
104 minItems: 3 !! 104 minItems: 2
105 maxItems: 3 105 maxItems: 3
106 <<
107 clock-names: <<
108 items: <<
109 - const: uart <<
110 - const: clk_uart_baud2 <<
111 - const: clk_uart_baud3 <<
112 <<
113 else: <<
114 properties: <<
115 clock-names: 106 clock-names:
116 minItems: 2 107 minItems: 2
117 items: 108 items:
118 - const: uart 109 - const: uart
119 - const: clk_uart_baud0 !! 110 - pattern: '^clk_uart_baud[0-1]$'
120 - const: clk_uart_baud1 !! 111 - 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 <<
139 112
140 - if: 113 - if:
141 properties: 114 properties:
142 compatible: 115 compatible:
143 contains: 116 contains:
144 enum: 117 enum:
145 - apple,s5l-uart 118 - apple,s5l-uart
146 - axis,artpec8-uart 119 - axis,artpec8-uart
147 - samsung,exynos4210-uart 120 - samsung,exynos4210-uart
148 - samsung,exynos5433-uart 121 - samsung,exynos5433-uart
149 then: 122 then:
150 properties: 123 properties:
151 clocks: 124 clocks:
152 maxItems: 2 125 maxItems: 2
153 <<
154 clock-names: 126 clock-names:
155 maxItems: 2 !! 127 items:
156 !! 128 - const: uart
157 - if: !! 129 - const: clk_uart_baud0
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: <<
173 maxItems: 2 <<
174 <<
175 unevaluatedProperties: false <<
176 130
177 examples: 131 examples:
178 - | 132 - |
179 #include <dt-bindings/clock/samsung,s3c64x 133 #include <dt-bindings/clock/samsung,s3c64xx-clock.h>
180 134
181 uart0: serial@7f005000 { 135 uart0: serial@7f005000 {
182 compatible = "samsung,s3c6400-uart"; 136 compatible = "samsung,s3c6400-uart";
183 reg = <0x7f005000 0x100>; 137 reg = <0x7f005000 0x100>;
184 interrupt-parent = <&vic1>; 138 interrupt-parent = <&vic1>;
185 interrupts = <5>; 139 interrupts = <5>;
186 clock-names = "uart", "clk_uart_baud2" 140 clock-names = "uart", "clk_uart_baud2",
187 "clk_uart_baud3"; 141 "clk_uart_baud3";
188 clocks = <&clocks PCLK_UART0>, <&clock 142 clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>,
189 <&clocks SCLK_UART>; 143 <&clocks SCLK_UART>;
190 samsung,uart-fifosize = <16>; 144 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 }; 145 };
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