| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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 | enum: |
| 15 | - samsung,s3c2410-i2c |
| 16 | - samsung,s3c2440-i2c |
| 17 | # For s3c2440-like I2C used inside HDMIPHY block found on several SoCs: |
| 18 | - samsung,s3c2440-hdmiphy-i2c |
| 19 | # For s3c2440-like I2C used as a host to SATA PHY controller on an |
| 20 | # internal bus: |
| 21 | - samsung,exynos5-sata-phy-i2c |
| 22 | |
| 23 | '#address-cells': |
| 24 | const: 1 |
| 25 | |
| 26 | clocks: |
| 27 | maxItems: 1 |
| 28 | |
| 29 | clock-names: |
| 30 | items: |
| 31 | - const: i2c |
| 32 | |
| 33 | gpios: |
| 34 | description: | |
| 35 | The order of the GPIOs should be the following:: <SDA, SCL>. The GPIO |
| 36 | specifier depends on the gpio controller. Required in all cases except |
| 37 | for "samsung,s3c2440-hdmiphy-i2c" whose input/output lines are |
| 38 | permanently wired to the respective client. |
| 39 | This property is deprecated. Use "pinctrl-0" and "pinctrl-names" instead. |
| 40 | deprecated: true |
| 41 | |
| 42 | interrupts: |
| 43 | maxItems: 1 |
| 44 | |
| 45 | reg: |
| 46 | maxItems: 1 |
| 47 | |
| 48 | samsung,i2c-max-bus-freq: |
| 49 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 50 | description: |
| 51 | Desired frequency in Hz of the bus. |
| 52 | default: 100000 |
| 53 | |
| 54 | samsung,i2c-sda-delay: |
| 55 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 56 | description: |
| 57 | Delay (in ns) applied to data line (SDA) edges. |
| 58 | default: 0 |
| 59 | |
| 60 | samsung,i2c-slave-addr: |
| 61 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 62 | description: |
| 63 | Slave address in multi-master environment. |
| 64 | default: 0 |
| 65 | |
| 66 | samsung,sysreg-phandle: |
| 67 | $ref: /schemas/types.yaml#/definitions/phandle |
| 68 | description: Pandle to syscon used to control the system registers. |
| 69 | |
| 70 | '#size-cells': |
| 71 | const: 0 |
| 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 | }; |