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author | Christophe Ricard <christophe.ricard@gmail.com> | 2014-05-13 22:03:40 +0200 |
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committer | Samuel Ortiz <sameo@linux.intel.com> | 2014-05-20 00:47:43 +0200 |
commit | f517a5f370de4171afe1487d67345d7eef1f1822 (patch) | |
tree | 57bf43bd63464f90a0a13aceefcb86f9db047214 /Documentation/devicetree | |
parent | c44cb2edd01ca31471d9385f0895891b006ab904 (diff) | |
download | op-kernel-dev-f517a5f370de4171afe1487d67345d7eef1f1822.zip op-kernel-dev-f517a5f370de4171afe1487d67345d7eef1f1822.tar.gz |
NFC: dts: st21nfca_i2c: Add DTS Documentation
Describe the properties used by the st21nfca NFC controller driver.
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r-- | Documentation/devicetree/bindings/net/nfc/st21nfca.txt | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/nfc/st21nfca.txt b/Documentation/devicetree/bindings/net/nfc/st21nfca.txt new file mode 100644 index 0000000..4724fe6 --- /dev/null +++ b/Documentation/devicetree/bindings/net/nfc/st21nfca.txt @@ -0,0 +1,33 @@ +* 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. + +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>; + }; +}; |