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NFC: dts: st21nfca: Document ese-present & uicc-present DTS property 

On st21nfca, the mechanism to enable a secure element needs to add 2
properties in order manage the SWP line correctly.

Document ese-present and uicc-present properties.

Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Christophe Ricard 2015-01-27 01:18:20 +01:00 committed by Samuel Ortiz
parent 2130fb97fe
commit 3b06053262
1 changed files with 7 additions and 0 deletions
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7
Documentation/devicetree/bindings/net/nfc/st21nfca.txt
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@ -11,6 +11,10 @@ Required properties:
Optional SoC Specific Properties: Optional SoC Specific Properties:
- pinctrl-names: Contains only one value - "default". - pinctrl-names: Contains only one value - "default".
- pintctrl-0: Specifies the pin control groups used for this controller. - 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): Example (for ARM-based BeagleBoard xM with ST21NFCA on I2C2):
@ -29,5 +33,8 @@ Example (for ARM-based BeagleBoard xM with ST21NFCA on I2C2):
interrupts = <2 IRQ_TYPE_LEVEL_LOW>; interrupts = <2 IRQ_TYPE_LEVEL_LOW>;
enable-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; enable-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>;
ese-present;
uicc-present;
}; };
}; };