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29 lines
952 B
Plaintext
29 lines
952 B
Plaintext
STMicroelectonics Multi-Function eXpander (STMFX) Core bindings
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ST Multi-Function eXpander (STMFX) is a slave controller using I2C for
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communication with the main MCU. Its main features are GPIO expansion, main
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MCU IDD measurement (IDD is the amount of current that flows through VDD) and
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resistive touchscreen controller.
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Required properties:
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- compatible: should be "st,stmfx-0300".
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- reg: I2C slave address of the device.
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- interrupts: interrupt specifier triggered by MFX_IRQ_OUT signal.
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Please refer to ../interrupt-controller/interrupt.txt
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Optional properties:
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- drive-open-drain: configure MFX_IRQ_OUT as open drain.
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- vdd-supply: phandle of the regulator supplying STMFX.
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Example:
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stmfx: stmfx@42 {
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compatible = "st,stmfx-0300";
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reg = <0x42>;
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interrupts = <8 IRQ_TYPE_EDGE_RISING>;
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interrupt-parent = <&gpioi>;
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vdd-supply = <&v3v3>;
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};
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Please refer to ../pinctrl/pinctrl-stmfx.txt for STMFX GPIO expander function bindings.
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