On 06/02/14 07:00, Matt Ranostay wrote:
Document compatible string, required and optional DT properties for
AS3935 chipset driver.
Signed-off-by: Matt Ranostay <[email protected]>
---
.../devicetree/bindings/iio/proximity/as3935.txt | 28 ++++++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.txt | 1 +
2 files changed, 29 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/proximity/as3935.txt
diff --git a/Documentation/devicetree/bindings/iio/proximity/as3935.txt
b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
new file mode 100644
index 0000000..574d49c
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/proximity/as3935.txt
@@ -0,0 +1,28 @@
+Austrian Microsystems AS3935 Franklin lightning sensor device driver
+
+Required properties:
+ - compatible: must be "ams,as3935"
+ - reg: SPI chip select number for the device
+ - spi-cpha: SPI Mode 1. Refer to spi/spi-bus.txt for generic SPI
+ slave node bindings.
+ - interrupt-parent : should be the phandle for the interrupt controller
+ - interrupts : interrupt mapping for GPIO IRQ
Why does it need to be a GPIO IRQ? As far as I can see any irq will do
(note there are devices that provide suitable interrupts without the ability
to read the level). Oops, we have a couple of other IIO bindings stating
exactly this. I doubt they need to be GPIOs either.
+
+ Refer to interrupt-controller/interrupts.txt for generic
+ interrupt client node bindings.
+
+Optional properties:
+ - ams,tune-cap: Calibration tuning capacitor stepping value 0 - 15.
+ Range of 0 to 120 pF, 8pF steps. This will require using the
+ calibration data from the manufacturer.
Why not have this as the actual value rather than a magic number? Might
as well keep the device tree as human readable as possible.
+
+Example:
+
+as3935@0 {
+ compatible = "ams,as3935";
+ reg = <0>;
+ spi-cpha;
+ interrupt-parent = <&gpio1>;
+ interrupts = <16 1>;
+ ams,tune-cap = <10>;
+};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt
b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 3c31b40..9dd66ca 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -10,6 +10,7 @@ aeroflexgaisler Aeroflex Gaisler AB
ak Asahi Kasei Corp.
altr Altera Corp.
amcc Applied Micro Circuits Corporation (APM, formally AMCC)
+ams AMS AG
amstaos AMS-Taos Inc.
apm Applied Micro Circuits Corporation (APM)
arm ARM Ltd.
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