| 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: |
| Tom Rini | 93743d2 | 2024-04-01 09:08:13 -0400 | [diff] [blame] | 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 |
| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 28 | |
| 29 | '#address-cells': |
| 30 | const: 1 |
| 31 | |
| 32 | clocks: |
| 33 | maxItems: 1 |
| 34 | |
| 35 | clock-names: |
| 36 | items: |
| 37 | - const: i2c |
| 38 | |
| 39 | gpios: |
| 40 | description: | |
| 41 | The order of the GPIOs should be the following:: <SDA, SCL>. The GPIO |
| 42 | specifier depends on the gpio controller. Required in all cases except |
| 43 | for "samsung,s3c2440-hdmiphy-i2c" whose input/output lines are |
| 44 | permanently wired to the respective client. |
| 45 | This property is deprecated. Use "pinctrl-0" and "pinctrl-names" instead. |
| 46 | deprecated: true |
| 47 | |
| 48 | interrupts: |
| 49 | maxItems: 1 |
| 50 | |
| 51 | reg: |
| 52 | maxItems: 1 |
| 53 | |
| 54 | samsung,i2c-max-bus-freq: |
| 55 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 56 | description: |
| 57 | Desired frequency in Hz of the bus. |
| 58 | default: 100000 |
| 59 | |
| 60 | samsung,i2c-sda-delay: |
| 61 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 62 | description: |
| 63 | Delay (in ns) applied to data line (SDA) edges. |
| 64 | default: 0 |
| 65 | |
| 66 | samsung,i2c-slave-addr: |
| 67 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 68 | description: |
| 69 | Slave address in multi-master environment. |
| 70 | default: 0 |
| 71 | |
| 72 | samsung,sysreg-phandle: |
| 73 | $ref: /schemas/types.yaml#/definitions/phandle |
| 74 | description: Pandle to syscon used to control the system registers. |
| 75 | |
| 76 | '#size-cells': |
| 77 | const: 0 |
| 78 | |
| 79 | required: |
| 80 | - compatible |
| 81 | - reg |
| 82 | |
| 83 | allOf: |
| 84 | - $ref: /schemas/i2c/i2c-controller.yaml# |
| 85 | - if: |
| 86 | properties: |
| 87 | compatible: |
| 88 | contains: |
| 89 | enum: |
| 90 | - samsung,s3c2440-hdmiphy-i2c |
| 91 | - samsung,exynos5-sata-phy-i2c |
| 92 | then: |
| 93 | properties: |
| 94 | gpios: false |
| 95 | |
| 96 | - if: |
| 97 | properties: |
| 98 | compatible: |
| 99 | contains: |
| 100 | enum: |
| 101 | - samsung,s3c2410-i2c |
| 102 | - samsung,s3c2440-i2c |
| 103 | - samsung,s3c2440-hdmiphy-i2c |
| 104 | then: |
| 105 | required: |
| 106 | - interrupts |
| 107 | |
| 108 | unevaluatedProperties: false |
| 109 | |
| 110 | examples: |
| 111 | - | |
| 112 | #include <dt-bindings/clock/exynos5250.h> |
| 113 | #include <dt-bindings/interrupt-controller/arm-gic.h> |
| 114 | |
| 115 | i2c@12c60000 { |
| 116 | compatible = "samsung,s3c2440-i2c"; |
| 117 | reg = <0x12C60000 0x100>; |
| 118 | interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>; |
| 119 | #address-cells = <1>; |
| 120 | #size-cells = <0>; |
| 121 | clocks = <&clock CLK_I2C0>; |
| 122 | clock-names = "i2c"; |
| 123 | pinctrl-names = "default"; |
| 124 | pinctrl-0 = <&i2c0_bus>; |
| 125 | |
| 126 | samsung,sysreg-phandle = <&sysreg_system_controller>; |
| 127 | samsung,i2c-sda-delay = <100>; |
| 128 | samsung,i2c-max-bus-freq = <20000>; |
| 129 | samsung,i2c-slave-addr = <0x66>; |
| 130 | |
| 131 | eeprom@50 { |
| 132 | compatible = "samsung,s524ad0xd1", "atmel,24c128"; |
| 133 | reg = <0x50>; |
| 134 | }; |
| 135 | }; |
| 136 | |
| 137 | i2c@12ce0000 { |
| 138 | compatible = "samsung,s3c2440-hdmiphy-i2c"; |
| 139 | reg = <0x12CE0000 0x1000>; |
| 140 | interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>; |
| 141 | #address-cells = <1>; |
| 142 | #size-cells = <0>; |
| 143 | clocks = <&clock CLK_I2C_HDMI>; |
| 144 | clock-names = "i2c"; |
| 145 | |
| 146 | samsung,i2c-sda-delay = <100>; |
| 147 | samsung,i2c-max-bus-freq = <66000>; |
| 148 | |
| 149 | phy-i2c@38 { |
| 150 | compatible = "samsung,exynos4212-hdmiphy"; |
| 151 | reg = <0x38>; |
| 152 | }; |
| 153 | }; |
| 154 | |
| 155 | i2c@121d0000 { |
| 156 | compatible = "samsung,exynos5-sata-phy-i2c"; |
| 157 | reg = <0x121D0000 0x100>; |
| 158 | #address-cells = <1>; |
| 159 | #size-cells = <0>; |
| 160 | clocks = <&clock CLK_SATA_PHYI2C>; |
| 161 | clock-names = "i2c"; |
| 162 | |
| 163 | samsung,i2c-sda-delay = <100>; |
| 164 | samsung,i2c-max-bus-freq = <40000>; |
| 165 | |
| 166 | phy-i2c@38 { |
| 167 | compatible = "samsung,exynos-sataphy-i2c"; |
| 168 | reg = <0x38>; |
| 169 | }; |
| 170 | }; |