| * STMicroelectronics SAS. ST21NFCA NFC Controller |
| |
| Required properties: |
| - compatible: Should be "st,st21nfca-i2c". |
| - clock-frequency: I²C work frequency. |
| - reg: address on the bus |
| - interrupt-parent: phandle for the interrupt gpio controller |
| - interrupts: GPIO interrupt to which the chip is connected |
| - enable-gpios: Output GPIO pin used for enabling/disabling the ST21NFCA |
| |
| Optional SoC Specific Properties: |
| - pinctrl-names: Contains only one value - "default". |
| - pintctrl-0: Specifies the pin control groups used for this controller. |
| - ese-present: Specifies that an ese is physically connected to the nfc |
| controller. |
| - uicc-present: Specifies that the uicc swp signal can be physically |
| connected to the nfc controller. |
| |
| Example (for ARM-based BeagleBoard xM with ST21NFCA on I2C2): |
| |
| &i2c2 { |
| |
| status = "okay"; |
| |
| st21nfca: st21nfca@1 { |
| |
| compatible = "st,st21nfca-i2c"; |
| |
| reg = <0x01>; |
| clock-frequency = <400000>; |
| |
| interrupt-parent = <&gpio5>; |
| interrupts = <2 IRQ_TYPE_LEVEL_LOW>; |
| |
| enable-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; |
| |
| ese-present; |
| uicc-present; |
| }; |
| }; |
