1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/i2c/samsung,s3c2410-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Samsung S3C/S5P/Exynos SoC I2C Controller
8
9 maintainers:
10 - Krzysztof Kozlowski <krzk@kernel.org>
11
12 properties:
13 compatible:
14 oneOf:
15 - enum:
16 - samsung,s3c2410-i2c
17 - samsung,s3c2440-i2c
18 # For s3c2440-like I2C used inside HDMIPHY block found on several SoCs:
19 - samsung,s3c2440-hdmiphy-i2c
20 # For s3c2440-like I2C used as a host to SATA PHY controller on an
21 # internal bus:
22 - samsung,exynos5-sata-phy-i2c
23 - items:
24 - enum:
25 - samsung,exynos7885-i2c
26 - samsung,exynos850-i2c
27 - const: samsung,s3c2440-i2c
28
29 clocks:
30 maxItems: 1
31
32 clock-names:
33 items:
34 - const: i2c
35
36 gpios:
37 description: |
38 The order of the GPIOs should be the following:: <SDA, SCL>. The GPIO
39 specifier depends on the gpio controller. Required in all cases except
40 for "samsung,s3c2440-hdmiphy-i2c" whose input/output lines are
41 permanently wired to the respective client.
42 This property is deprecated. Use "pinctrl-0" and "pinctrl-names" instead.
43 deprecated: true
44
45 interrupts:
46 maxItems: 1
47
48 reg:
49 maxItems: 1
50
51 samsung,i2c-max-bus-freq:
52 $ref: /schemas/types.yaml#/definitions/uint32
53 description:
54 Desired frequency in Hz of the bus.
55 default: 100000
56
57 samsung,i2c-sda-delay:
58 $ref: /schemas/types.yaml#/definitions/uint32
59 description:
60 Delay (in ns) applied to data line (SDA) edges.
61 default: 0
62
63 samsung,i2c-slave-addr:
64 $ref: /schemas/types.yaml#/definitions/uint32
65 description:
66 Slave address in multi-master environment.
67 default: 0
68
69 samsung,sysreg-phandle:
70 $ref: /schemas/types.yaml#/definitions/phandle
71 description: Pandle to syscon used to control the system registers.
72
73 required:
74 - compatible
75 - reg
76
77 allOf:
78 - $ref: /schemas/i2c/i2c-controller.yaml#
79 - if:
80 properties:
81 compatible:
82 contains:
83 enum:
84 - samsung,s3c2440-hdmiphy-i2c
85 - samsung,exynos5-sata-phy-i2c
86 then:
87 properties:
88 gpios: false
89
90 - if:
91 properties:
92 compatible:
93 contains:
94 enum:
95 - samsung,s3c2410-i2c
96 - samsung,s3c2440-i2c
97 - samsung,s3c2440-hdmiphy-i2c
98 then:
99 required:
100 - interrupts
101
102 unevaluatedProperties: false
103
104 examples:
105 - |
106 #include <dt-bindings/clock/exynos5250.h>
107 #include <dt-bindings/interrupt-controller/arm-gic.h>
108
109 i2c@12c60000 {
110 compatible = "samsung,s3c2440-i2c";
111 reg = <0x12C60000 0x100>;
112 interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
113 #address-cells = <1>;
114 #size-cells = <0>;
115 clocks = <&clock CLK_I2C0>;
116 clock-names = "i2c";
117 pinctrl-names = "default";
118 pinctrl-0 = <&i2c0_bus>;
119
120 samsung,sysreg-phandle = <&sysreg_system_controller>;
121 samsung,i2c-sda-delay = <100>;
122 samsung,i2c-max-bus-freq = <20000>;
123 samsung,i2c-slave-addr = <0x66>;
124
125 eeprom@50 {
126 compatible = "samsung,s524ad0xd1", "atmel,24c128";
127 reg = <0x50>;
128 };
129 };
130
131 i2c@12ce0000 {
132 compatible = "samsung,s3c2440-hdmiphy-i2c";
133 reg = <0x12CE0000 0x1000>;
134 interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
135 #address-cells = <1>;
136 #size-cells = <0>;
137 clocks = <&clock CLK_I2C_HDMI>;
138 clock-names = "i2c";
139
140 samsung,i2c-sda-delay = <100>;
141 samsung,i2c-max-bus-freq = <66000>;
142
143 phy-i2c@38 {
144 compatible = "samsung,exynos4212-hdmiphy";
145 reg = <0x38>;
146 };
147 };
148
149 i2c@121d0000 {
150 compatible = "samsung,exynos5-sata-phy-i2c";
151 reg = <0x121D0000 0x100>;
152 #address-cells = <1>;
153 #size-cells = <0>;
154 clocks = <&clock CLK_SATA_PHYI2C>;
155 clock-names = "i2c";
156
157 samsung,i2c-sda-delay = <100>;
158 samsung,i2c-max-bus-freq = <40000>;
159
160 phy-i2c@38 {
161 compatible = "samsung,exynos-sataphy-i2c";
162 reg = <0x38>;
163 };
164 };
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