From a6be357e9720a7f8e11e2997e60626179151d190 Mon Sep 17 00:00:00 2001 From: Christophe Ricard Date: Fri, 14 Aug 2015 22:33:38 +0200 Subject: [PATCH] nfc: st-nci: Add device tree documentation for spi phy Add st-nci-spi phy devicetree documentation Signed-off-by: Christophe Ricard Signed-off-by: Samuel Ortiz --- .../net/nfc/{st-nci.txt => st-nci-i2c.txt} | 0 .../bindings/net/nfc/st-nci-spi.txt | 31 +++++++++++++++++++ 2 files changed, 31 insertions(+) rename Documentation/devicetree/bindings/net/nfc/{st-nci.txt => st-nci-i2c.txt} (100%) create mode 100644 Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt diff --git a/Documentation/devicetree/bindings/net/nfc/st-nci.txt b/Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt similarity index 100% rename from Documentation/devicetree/bindings/net/nfc/st-nci.txt rename to Documentation/devicetree/bindings/net/nfc/st-nci-i2c.txt diff --git a/Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt b/Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt new file mode 100644 index 000000000000..525681b6dc39 --- /dev/null +++ b/Documentation/devicetree/bindings/net/nfc/st-nci-spi.txt @@ -0,0 +1,31 @@ +* STMicroelectronics SAS. ST NCI NFC Controller + +Required properties: +- compatible: Should be "st,st21nfcb-spi" +- spi-max-frequency: Maximum SPI frequency (<= 10000000). +- interrupt-parent: phandle for the interrupt gpio controller +- interrupts: GPIO interrupt to which the chip is connected +- reset-gpios: Output GPIO pin used to reset the ST21NFCB + +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 ST21NFCB on SPI4): + +&mcspi4 { + + status = "okay"; + + st21nfcb: st21nfcb@0 { + + compatible = "st,st21nfcb-spi"; + + clock-frequency = <4000000>; + + interrupt-parent = <&gpio5>; + interrupts = <2 IRQ_TYPE_EDGE_RISING>; + + reset-gpios = <&gpio5 29 GPIO_ACTIVE_HIGH>; + }; +}; -- 2.39.5