Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/Documentation/devicetree/bindings/i2c/i2c-exynos5.yaml
26307 views
1
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

2
%YAML 1.2

3
---

4
$id: http://devicetree.org/schemas/i2c/i2c-exynos5.yaml#

5
$schema: http://devicetree.org/meta-schemas/core.yaml#

6


7
title: Samsung's High Speed I2C controller

8


9
maintainers:

10
  - Krzysztof Kozlowski <krzk@kernel.org>

11


12
description: |

13
  The Samsung's High Speed I2C controller is used to interface with I2C devices

14
  at various speeds ranging from 100kHz to 3.4MHz.

15


16
  In case the HSI2C controller is encapsulated within USI block (it's the case

17
  e.g. for Exynos850 and Exynos Auto V9 SoCs), it might be also necessary to

18
  define USI node in device tree file, choosing "i2c" configuration. Please see

19
  Documentation/devicetree/bindings/soc/samsung/exynos-usi.yaml for details.

20


21
properties:

22
  compatible:

23
    oneOf:

24
      - enum:

25
          - samsung,exynos5250-hsi2c    # Exynos5250 and Exynos5420

26
          - samsung,exynos5260-hsi2c    # Exynos5260

27
          - samsung,exynos7-hsi2c       # Exynos7

28
          - samsung,exynos8895-hsi2c

29
          - samsung,exynosautov9-hsi2c

30
      - items:

31
          - enum:

32
              - samsung,exynos5433-hsi2c

33
              - samsung,exynos7870-hsi2c

34
              - tesla,fsd-hsi2c

35
          - const: samsung,exynos7-hsi2c

36
      - items:

37
          - enum:

38
              - google,gs101-hsi2c

39
              - samsung,exynos2200-hsi2c

40
              - samsung,exynos850-hsi2c

41
          - const: samsung,exynosautov9-hsi2c

42
      - const: samsung,exynos5-hsi2c    # Exynos5250 and Exynos5420

43
        deprecated: true

44


45
  reg:

46
    maxItems: 1

47


48
  interrupts:

49
    maxItems: 1

50


51
  clock-frequency:

52
    default: 100000

53
    description:

54
      Desired operating frequency in Hz of the bus.

55


56
      If not specified, the bus operates in fast-speed mode at 100kHz.

57


58
      If specified, the bus operates in high-speed mode only if the

59
      clock-frequency is >= 1MHz.

60


61
  clocks:

62
    minItems: 1

63
    items:

64
      - description: I2C operating clock

65
      - description: Bus clock (APB)

66


67
  clock-names:

68
    minItems: 1

69
    items:

70
      - const: hsi2c

71
      - const: hsi2c_pclk

72


73
required:

74
  - compatible

75
  - reg

76
  - interrupts

77
  - clocks

78


79
allOf:

80
  - $ref: /schemas/i2c/i2c-controller.yaml#

81
  - if:

82
      properties:

83
        compatible:

84
          contains:

85
            enum:

86
              - samsung,exynosautov9-hsi2c

87


88
    then:

89
      properties:

90
        clocks:

91
          minItems: 2

92


93
        clock-names:

94
          minItems: 2

95


96
      required:

97
        - clock-names

98


99
    else:

100
      properties:

101
        clocks:

102
          maxItems: 1

103


104
unevaluatedProperties: false

105


106
examples:

107
  - |

108
    #include <dt-bindings/clock/exynos5420.h>

109
    #include <dt-bindings/interrupt-controller/arm-gic.h>

110
    #include <dt-bindings/interrupt-controller/irq.h>

111


112
    hsi2c_8: i2c@12e00000 {

113
        compatible = "samsung,exynos5250-hsi2c";

114
        reg = <0x12e00000 0x1000>;

115
        interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;

116
        #address-cells = <1>;

117
        #size-cells = <0>;

118
        clock-frequency = <100000>;

119
        clocks = <&clock CLK_USI4>;

120
        clock-names = "hsi2c";

121


122
        pmic@66 {

123
            /* compatible = "samsung,s2mps11-pmic"; */

124
            reg = <0x66>;

125
        };

126
    };

127


128
  - |

129
    #include <dt-bindings/clock/exynos850.h>

130
    #include <dt-bindings/interrupt-controller/arm-gic.h>

131


132
    hsi2c_2: i2c@138c0000 {

133
        compatible = "samsung,exynosautov9-hsi2c";

134
        reg = <0x138c0000 0xc0>;

135
        interrupts = <GIC_SPI 195 IRQ_TYPE_LEVEL_HIGH>;

136
        #address-cells = <1>;

137
        #size-cells = <0>;

138
        clocks = <&cmu_peri CLK_GOUT_HSI2C2_IPCLK>,

139
                 <&cmu_peri CLK_GOUT_HSI2C2_PCLK>;

140
        clock-names = "hsi2c", "hsi2c_pclk";

141


142
        pmic@66 {

143
            /* compatible = "samsung,s2mps11-pmic"; */

144
            reg = <0x66>;

145
        };

146
    };

147


148