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Message-ID: <1375109728-5931-1-git-send-email-coelho@ti.com>
Date: Mon, 29 Jul 2013 17:55:28 +0300
From: Luciano Coelho <coelho@...com>
To: <devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>
CC: <mturquette@...aro.org>, <mark.rutland@....com>, <balbi@...com>,
<grant.likely@...aro.org>, <rob.herring@...xeda.com>,
<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
<linux-wireless@...r.kernel.org>, <linux-arm@...r.kernel.org>,
<tony@...mide.com>, <nm@...com>,
<laurent.pinchart@...asonboard.com>
Subject: [PATCH v2] Documentation: dt: bindings: TI WiLink modules
Add device tree bindings documentation for the TI WiLink modules.
Currently only the WLAN part of the WiLink6, WiLink7 and WiLink8
modules is supported.
Signed-off-by: Luciano Coelho <coelho@...com>
---
Changes in v2:
Use generic clock definitions to get the clock data instead of passing
the frequencies directly. Also added definition for "internal"
ti,wilink-clock.
Please review.
Luca.
.../devicetree/bindings/net/wireless/ti-wilink.txt | 68 ++++++++++++++++++++++
1 file changed, 68 insertions(+)
create mode 100644 Documentation/devicetree/bindings/net/wireless/ti-wilink.txt
diff --git a/Documentation/devicetree/bindings/net/wireless/ti-wilink.txt b/Documentation/devicetree/bindings/net/wireless/ti-wilink.txt
new file mode 100644
index 0000000..5fd27dc
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/wireless/ti-wilink.txt
@@ -0,0 +1,68 @@
+TI WiLink Wireless Modules Device Tree Bindings
+===============================================
+
+The WiLink modules provide wireless connectivity, such as WLAN,
+Bluetooth, FM and NFC.
+
+There are several different modules available, which can be grouped by
+their generation: WiLink6, WiLink7 and WiLink8. WiLink4 is not
+currently supported with device tree.
+
+Currently, only the WLAN portion of the modules is supported with
+device tree.
+
+Required properties:
+--------------------
+
+- compatible: should be "ti,wilink6", "ti,wilink7" or "ti,wilink8"
+- interrupt-parent: the interrupt controller
+- interrupts: out-of-band WLAN interrupt
+ See the interrupt controller's bindings documentation for
+ detailed definition.
+
+Optional properties:
+--------------------
+
+- clocks: list of clocks needed by the chip as follows:
+
+ refclock: the internal WLAN reference clock frequency (required for
+ WiLink6 and WiLink7; not used for WiLink8).
+
+ tcxoclock: the internal WLAN TCXO clock frequency (required for
+ WiLink7 not used for WiLink6 and WiLink8).
+
+ The clocks must be defined and named accordingly. For example:
+
+ clocks = <&refclock>
+ clock-names = "refclock";
+
+ refclock: refclock {
+ compatible = "ti,wilink-clock";
+ #clock-cells = <0>;
+ clock-frequency = <38400000>;
+ };
+
+ Some modules that contain the WiLink chip provide clocks in the
+ module itself. In this case, we define a "ti,wilink-clock" as shown
+ above. But any other clock could in theory be used, so the proper
+ clock definition should be used.
+
+
+Example:
+--------
+
+Example definition that can be used in OMAP4 Panda:
+
+wlan {
+ compatible = "ti,wilink6";
+ interrupt-parent = <&gpio2>;
+ interrupts = <21 0x4>; /* gpio line 53, high level triggered */
+ clocks = <&refclock>;
+ clock-names = "refclock";
+
+ refclock: refclock {
+ compatible = "ti,wilink-clock";
+ #clock-cells = <0>;
+ clock-frequency = <38400000>;
+ };
+};
--
1.8.3.2
--
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