* STMicroelectronics SAS. ST NCI NFC Controller
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Required properties:
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- compatible: Should be "st,st21nfcb-spi"
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- spi-max-frequency: Maximum SPI frequency (<= 4000000).
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- interrupts: GPIO interrupt to which the chip is connected
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- reset-gpios: Output GPIO pin used to reset the ST21NFCB
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Optional SoC Specific Properties:
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- pinctrl-names: Contains only one value - "default".
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- pintctrl-0: Specifies the pin control groups used for this controller.
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- ese-present: Specifies that an ese is physically connected to the nfc
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controller.
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- uicc-present: Specifies that the uicc swp signal can be physically
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connected to the nfc controller.
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Example (for ARM-based BeagleBoard xM with ST21NFCB on SPI4):
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&mcspi4 {
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st21nfcb: st21nfcb@0 {
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compatible = "st,st21nfcb-spi";
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clock-frequency = <4000000>;
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interrupt-parent = <&gpio5>;
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interrupts = <2 IRQ_TYPE_EDGE_RISING>;
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reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
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ese-present;
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uicc-present;
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};
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};
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