65 lines
1.9 KiB
Plaintext
65 lines
1.9 KiB
Plaintext
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* Marvell MV64XXX I2C controller
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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 either:
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- "allwinner,sun4i-a10-i2c"
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- "allwinner,sun6i-a31-i2c"
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- "marvell,mv64xxx-i2c"
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- "marvell,mv78230-i2c"
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- "marvell,mv78230-a0-i2c"
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* Note: Only use "marvell,mv78230-a0-i2c" for a
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very rare, initial version of the SoC which
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had broken offload support. Linux
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auto-detects this and sets it appropriately.
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- interrupts : The interrupt number
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Optional properties :
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- clock-frequency : Desired I2C bus clock frequency in Hz. If not set the
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default frequency is 100kHz
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- resets : phandle to the parent reset controller. Mandatory
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whenever you're using the "allwinner,sun6i-a31-i2c"
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compatible.
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- clocks: : pointers to the reference clocks for this device, the
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first one is the one used for the clock on the i2c bus,
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the second one is the clock used to acces the registers
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of the controller
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- clock-names : names of used clocks, mandatory if the second clock is
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used, the name must be "core", and "reg" (the latter is
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only for Armada 7K/8K).
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Examples:
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i2c@11000 {
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compatible = "marvell,mv64xxx-i2c";
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reg = <0x11000 0x20>;
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interrupts = <29>;
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clock-frequency = <100000>;
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};
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For the Armada XP:
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i2c@11000 {
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compatible = "marvell,mv78230-i2c", "marvell,mv64xxx-i2c";
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reg = <0x11000 0x100>;
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interrupts = <29>;
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clock-frequency = <100000>;
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};
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For the Armada 7040:
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i2c@701000 {
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compatible = "marvell,mv78230-i2c";
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reg = <0x701000 0x20>;
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interrupts = <29>;
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clock-frequency = <100000>;
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clock-names = "core", "reg";
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clocks = <&core_clock>, <®_clock>;
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};
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