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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/net/nfc/pn532.txt | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/net/nfc/pn532.txt')
-rw-r--r-- | Documentation/devicetree/bindings/net/nfc/pn532.txt | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/pn532.txt b/Documentation/devicetree/bindings/net/nfc/pn532.txt new file mode 100644 index 000000000..a5507dc49 --- /dev/null +++ b/Documentation/devicetree/bindings/net/nfc/pn532.txt @@ -0,0 +1,46 @@ +* NXP Semiconductors PN532 NFC Controller + +Required properties: +- compatible: Should be + - "nxp,pn532" Place a node with this inside the devicetree node of the bus + where the NFC chip is connected to. + Currently the kernel has phy bindings for uart and i2c. + - "nxp,pn532-i2c" (DEPRECATED) only works for the i2c binding. + - "nxp,pn533-i2c" (DEPRECATED) only works for the i2c binding. + +Required properties if connected on i2c: +- clock-frequency: I²C work frequency. +- reg: for the I²C bus address. This is fixed at 0x24 for the PN532. +- interrupts: GPIO interrupt to which the chip is connected + +Optional SoC Specific Properties: +- pinctrl-names: Contains only one value - "default". +- pintctrl-0: Specifies the pin control groups used for this controller. + +Example (for ARM-based BeagleBone with PN532 on I2C2): + +&i2c2 { + + + pn532: nfc@24 { + + compatible = "nxp,pn532"; + + reg = <0x24>; + clock-frequency = <400000>; + + interrupt-parent = <&gpio1>; + interrupts = <17 IRQ_TYPE_EDGE_FALLING>; + + }; +}; + +Example (for PN532 connected via uart): + +uart4: serial@49042000 { + compatible = "ti,omap3-uart"; + + pn532: nfc { + compatible = "nxp,pn532"; + }; +}; |