Hi,
On 06/18/2014 02:35 PM, Mark Rutland wrote:
On Wed, Jun 18, 2014 at 06:16:05AM +0100, Varka Bhadram wrote:
devicetree bindings for cc2520 radio driver.
Signed-off-by: Varka Bhadram <varkab@xxxxxxx>
---
.../devicetree/bindings/net/ieee802154/cc2520.txt | 26 ++++++++++++++++++++
1 file changed, 26 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/ieee802154/cc2520.txt
diff --git a/Documentation/devicetree/bindings/net/ieee802154/cc2520.txt b/Documentation/devicetree/bindings/net/ieee802154/cc2520.txt
new file mode 100644
index 0000000..f0a749d
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/ieee802154/cc2520.txt
@@ -0,0 +1,26 @@
+CC2520 IEEE 802.15.4 Compatible Radio
+
+Required properties:
+ - compatible: should be "ti,cc2520"
+ - spi-max-frequency: maximal bus speed (8000000), should be set to 4000000 depends
+ sync or async operation mode
+ - reg: the chipselect index
+ - mode: SPI mode
What exactly is this property? It doesn't seem to be used by the driver,
the example is opaque, and this doesn't seem to match any existing
bindings (a grep for "mode" in Documentation/devicetree/bindings/spi
only found me a string "mode" property).
The example has several properties (the GPIOs and pinctrl) not listed
here...
Previously is used this 'mode' property to set the SPI mode. but i am not using now. I will remove it.
And also i will add the optional properties GPIO and pinctrl in next version.
Thanks for comments.
-Varka Bhadram.
Mark.
+Example:
+
+ cc2520@0 {
+ compatible = "ti,cc2520";
+ reg = <0>;
+ spi-max-frequency = <4000000>;
+ mode = <1>;
+
+ pinctrl-names = "default";
+ pinctrl-0 = <&cc2520_cape_pins>; /*GPIO pin muxing details*/
+
+ fifo-gpio = <&gpio1 18 0>;
+ fifop-gpio = <&gpio1 19 0>;
+ sfd-gpio = <&gpio1 13 0>;
+ cca-gpio = <&gpio1 16 0>;
+ vreg-gpio = <&gpio0 31 0>;
+ reset-gpio = <&gpio1 12 0>;
+ };
--
1.7.9.5
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