165 lines
4.1 KiB
YAML
165 lines
4.1 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/i2c/samsung,s3c2410-i2c.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Samsung S3C/S5P/Exynos SoC I2C Controller
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maintainers:
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- Krzysztof Kozlowski <krzk@kernel.org>
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properties:
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compatible:
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enum:
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- samsung,s3c2410-i2c
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- samsung,s3c2440-i2c
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# For s3c2440-like I2C used inside HDMIPHY block found on several SoCs:
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- samsung,s3c2440-hdmiphy-i2c
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# For s3c2440-like I2C used as a host to SATA PHY controller on an
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# internal bus:
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- samsung,exynos5-sata-phy-i2c
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'#address-cells':
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const: 1
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clocks:
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maxItems: 1
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clock-names:
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items:
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- const: i2c
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gpios:
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description: |
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The order of the GPIOs should be the following:: <SDA, SCL>. The GPIO
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specifier depends on the gpio controller. Required in all cases except
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for "samsung,s3c2440-hdmiphy-i2c" whose input/output lines are
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permanently wired to the respective client.
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This property is deprecated. Use "pinctrl-0" and "pinctrl-names" instead.
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deprecated: yes
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interrupts:
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maxItems: 1
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reg:
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maxItems: 1
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samsung,i2c-max-bus-freq:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Desired frequency in Hz of the bus.
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default: 100000
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samsung,i2c-sda-delay:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Delay (in ns) applied to data line (SDA) edges.
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default: 0
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samsung,i2c-slave-addr:
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$ref: /schemas/types.yaml#/definitions/uint32
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description:
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Slave address in multi-master environment.
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default: 0
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samsung,sysreg-phandle:
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$ref: /schemas/types.yaml#/definitions/phandle
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description: Pandle to syscon used to control the system registers.
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'#size-cells':
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const: 0
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required:
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- compatible
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- reg
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allOf:
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- $ref: /schemas/i2c/i2c-controller.yaml#
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- if:
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properties:
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compatible:
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contains:
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enum:
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- samsung,s3c2440-hdmiphy-i2c
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- samsung,exynos5-sata-phy-i2c
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then:
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properties:
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gpios: false
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- if:
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properties:
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compatible:
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contains:
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enum:
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- samsung,s3c2410-i2c
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- samsung,s3c2440-i2c
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- samsung,s3c2440-hdmiphy-i2c
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then:
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required:
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- interrupts
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/clock/exynos5250.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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i2c@12c60000 {
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compatible = "samsung,s3c2440-i2c";
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reg = <0x12C60000 0x100>;
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interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
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#address-cells = <1>;
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#size-cells = <0>;
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clocks = <&clock CLK_I2C0>;
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clock-names = "i2c";
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pinctrl-names = "default";
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pinctrl-0 = <&i2c0_bus>;
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samsung,sysreg-phandle = <&sysreg_system_controller>;
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samsung,i2c-sda-delay = <100>;
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samsung,i2c-max-bus-freq = <20000>;
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samsung,i2c-slave-addr = <0x66>;
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eeprom@50 {
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compatible = "samsung,s524ad0xd1", "atmel,24c128";
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reg = <0x50>;
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};
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};
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i2c@12ce0000 {
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compatible = "samsung,s3c2440-hdmiphy-i2c";
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reg = <0x12CE0000 0x1000>;
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interrupts = <GIC_SPI 64 IRQ_TYPE_LEVEL_HIGH>;
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#address-cells = <1>;
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#size-cells = <0>;
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clocks = <&clock CLK_I2C_HDMI>;
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clock-names = "i2c";
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samsung,i2c-sda-delay = <100>;
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samsung,i2c-max-bus-freq = <66000>;
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phy-i2c@38 {
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compatible = "samsung,exynos4212-hdmiphy";
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reg = <0x38>;
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};
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};
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i2c@121d0000 {
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compatible = "samsung,exynos5-sata-phy-i2c";
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reg = <0x121D0000 0x100>;
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#address-cells = <1>;
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#size-cells = <0>;
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clocks = <&clock CLK_SATA_PHYI2C>;
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clock-names = "i2c";
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samsung,i2c-sda-delay = <100>;
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samsung,i2c-max-bus-freq = <40000>;
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phy-i2c@38 {
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compatible = "samsung,exynos-sataphy-i2c";
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reg = <0x38>;
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};
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};
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