diff options
author | Lars Poeschel <poeschel@lemonage.de> | 2019-10-29 15:45:58 +0100 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2019-10-29 21:05:26 -0700 |
commit | 3c57b3954701fbbac954986198edb030d84873e0 (patch) | |
tree | 95bc0336182d59cda47771098eb85379fac3c462 /Documentation/devicetree/bindings/net | |
parent | 3d5f3a67e466f08920b3a2e5964bc03743932552 (diff) | |
download | linux-3c57b3954701fbbac954986198edb030d84873e0.tar.bz2 |
nfc: pn532: Add uart phy docs and rename it
This adds documentation about the uart phy to the pn532 binding doc. As
the filename "pn533-i2c.txt" is not appropriate any more, rename it to
the more general "pn532.txt".
This also documents the deprecation of the compatible strings ending
with "...-i2c".
Cc: Johan Hovold <johan@kernel.org>
Cc: Simon Horman <horms@verge.net.au>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lars Poeschel <poeschel@lemonage.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/devicetree/bindings/net')
-rw-r--r-- | Documentation/devicetree/bindings/net/nfc/pn532.txt | 46 | ||||
-rw-r--r-- | Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt | 29 |
2 files changed, 46 insertions, 29 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/pn532.txt b/Documentation/devicetree/bindings/net/nfc/pn532.txt new file mode 100644 index 000000000000..a5507dc499bc --- /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"; + }; +}; diff --git a/Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt b/Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt deleted file mode 100644 index 2efe3886b95b..000000000000 --- a/Documentation/devicetree/bindings/net/nfc/pn533-i2c.txt +++ /dev/null @@ -1,29 +0,0 @@ -* NXP Semiconductors PN532 NFC Controller - -Required properties: -- compatible: Should be "nxp,pn532-i2c" or "nxp,pn533-i2c". -- clock-frequency: I²C work frequency. -- reg: address on the bus -- 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: pn532@24 { - - compatible = "nxp,pn532-i2c"; - - reg = <0x24>; - clock-frequency = <400000>; - - interrupt-parent = <&gpio1>; - interrupts = <17 IRQ_TYPE_EDGE_FALLING>; - - }; -}; |