Add binding for SiRFstar-based GNSS receivers.
Note that while four compatible-strings are initially added representing
devices which differ in which I/O interfaces they support, they
otherwise essentially share the same feature set.
Pin and supply names (and some recommended timings) vary slightly, but
the binding recommends using a common set of names.
Note that the wakeup gpio is not intended to be as a wakeup source, but
rather to detect the current power state of the device (active or
hibernate).
Signed-off-by: Johan Hovold <jo...@kernel.org>
---
.../devicetree/bindings/gnss/sirfstar.txt | 38 +++++++++++++++++++
.../devicetree/bindings/vendor-prefixes.txt | 3 ++
2 files changed, 41 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gnss/sirfstar.txt
diff --git a/Documentation/devicetree/bindings/gnss/sirfstar.txt
b/Documentation/devicetree/bindings/gnss/sirfstar.txt
new file mode 100644
index 000000000000..5e6a02aec49a
--- /dev/null
+++ b/Documentation/devicetree/bindings/gnss/sirfstar.txt
@@ -0,0 +1,38 @@
+SiRFstar-based GNSS Receiver DT binding
+
+SiRFstar chipsets are used in GNSS-receiver modules produced by several
+vendors and can use UART, SPI or I2C interfaces.
+
+Please see Documentation/devicetree/bindings/gnss/gnss.txt for generic
+properties.
+
+Required Properties:
+
+- compatible : Must be one of
+
+ "fastrax,uc430"
+ "linx,r4"
+ "wi2wi,w2sg0008i"
+ "wi2wi,w2sg0084i"
+
+- vcc-supply : Main voltage regulator (3V3_IN, VDD, VCC)
+
+Optional Properties:
+
+- enable-gpios : GPIO used to power on and off device (ON_OFF)
+- wakeup-gpios : GPIO used to determine device power state (WAKEUP, RFPWRUP)
+- timepulse-gpios : Timepulse (e.g 1PPS) GPIO (1PPS, TM)
+
+Example:
+
+serial@1234 {
+ compatible = "ns16550a";
+
+ gnss {
+ compatible = "wi2wi,w2sg0084i";
+
+ vcc-supply = <&gnss_reg>;
+ enable-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
+ wakeup-gpios = <&gpio0 17 GPIO_ACTIVE_HIGH>;
+ };
+};
diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt
b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 2128dfdf73f1..ddd81c82082d 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -120,6 +120,7 @@ excito Excito
ezchip EZchip Semiconductor
fairphone Fairphone B.V.
faraday Faraday Technology Corporation
+fastrax Fastrax Oy
fcs Fairchild Semiconductor
firefly Firefly
focaltech FocalTech Systems Co.,Ltd
@@ -197,6 +198,7 @@ licheepi Lichee Pi
linaro Linaro Limited
linksys Belkin International, Inc. (Linksys)
linux Linux-specific binding
+linx Linx Technologies
lltc Linear Technology Corporation
lsi LSI Corp. (LSI Logic)
lwn Liebherr-Werk Nenzing GmbH
@@ -390,6 +392,7 @@ vivante Vivante Corporation
vocore VoCore Studio
voipac Voipac Technologies s.r.o.
vot Vision Optical Technology Co., Ltd.
+wi2wi Wi2Wi
wd Western Digital Corp.
wetek WeTek Electronics, limited.
wexler Wexler
--
2.17.0
