38 lines
1.2 KiB
Plaintext
38 lines
1.2 KiB
Plaintext
* I2C
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Required properties :
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- reg : Offset and length of the register set for the device
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- compatible : should be "mrvl,mmp-twsi" where CHIP is the name of a
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compatible processor, e.g. pxa168, pxa910, mmp2, mmp3.
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For the pxa2xx/pxa3xx, an additional node "mrvl,pxa-i2c" is required
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as shown in the example below.
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Recommended properties :
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- interrupts : <a b> where a is the interrupt number and b is a
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field that represents an encoding of the sense and level
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information for the interrupt. This should be encoded based on
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the information in section 2) depending on the type of interrupt
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controller you have.
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- interrupt-parent : the phandle for the interrupt controller that
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services interrupts for this device.
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- mrvl,i2c-polling : Disable interrupt of i2c controller. Polling
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status register of i2c controller instead.
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- mrvl,i2c-fast-mode : Enable fast mode of i2c controller.
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Examples:
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twsi1: i2c@d4011000 {
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compatible = "mrvl,mmp-twsi", "mrvl,pxa-i2c";
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reg = <0xd4011000 0x1000>;
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interrupts = <7>;
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mrvl,i2c-fast-mode;
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};
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twsi2: i2c@d4025000 {
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compatible = "mrvl,mmp-twsi", "mrvl,pxa-i2c";
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reg = <0xd4025000 0x1000>;
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interrupts = <58>;
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};
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