44 lines
1.4 KiB
Plaintext
44 lines
1.4 KiB
Plaintext
* Texas Instruments Davinci/Keystone I2C
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This file provides information, what the device node for the
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davinci/keystone i2c interface contains.
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Required properties:
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- compatible: "ti,davinci-i2c" or "ti,keystone-i2c";
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- reg : Offset and length of the register set for the device
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- clocks: I2C functional clock phandle.
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For 66AK2G this property should be set per binding,
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Documentation/devicetree/bindings/clock/ti,sci-clk.yaml
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SoC-specific Required Properties:
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The following are mandatory properties for Keystone 2 66AK2G SoCs only:
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- power-domains: Should contain a phandle to a PM domain provider node
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and an args specifier containing the I2C device id
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value. This property is as per the binding,
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Documentation/devicetree/bindings/soc/ti/sci-pm-domain.yaml
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Recommended properties :
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- interrupts : standard interrupt property.
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- clock-frequency : desired I2C bus clock frequency in Hz.
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- ti,has-pfunc: boolean; if defined, it indicates that SoC supports PFUNC
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registers. PFUNC registers allow to switch I2C pins to function as
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GPIOs, so they can be toggled manually.
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Example (enbw_cmc board):
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i2c@1c22000 {
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compatible = "ti,davinci-i2c";
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reg = <0x22000 0x1000>;
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clock-frequency = <100000>;
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interrupts = <15>;
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interrupt-parent = <&intc>;
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#address-cells = <1>;
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#size-cells = <0>;
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dtt@48 {
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compatible = "national,lm75";
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reg = <0x48>;
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};
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};
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