linux-kernel - [RFC 3/7] dt: bindings: Add nokia-bluetooth

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Message-Id: <1471058078-5579-4-git-send-email-sre@kernel.org>
Date:	Sat, 13 Aug 2016 05:14:34 +0200
From:	Sebastian Reichel <sre@...nel.org>
To:	Sebastian Reichel <sre@...nel.org>,
	Tony Lindgren <tony@...mide.com>,
	Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Marcel Holtmann <marcel@...tmann.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.com>
Cc:	Ville Tervo <ville.tervo@....fi>,
	Filip Matijević <filip.matijevic.pz@...il.com>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Pavel Machek <pavel@....cz>,
	Pali Rohár <pali.rohar@...il.com>,
	ivo.g.dimitrov.75@...il.com, linux-bluetooth@...r.kernel.org,
	linux-serial@...r.kernel.org, linux-omap@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC 3/7] dt: bindings: Add nokia-bluetooth

---
 .../devicetree/bindings/net/nokia-bluetooth.txt    | 43 ++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/nokia-bluetooth.txt

diff --git a/Documentation/devicetree/bindings/net/nokia-bluetooth.txt b/Documentation/devicetree/bindings/net/nokia-bluetooth.txt
new file mode 100644
index 000000000000..a0fceabb4cce
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/nokia-bluetooth.txt
@@ -0,0 +1,43 @@
+Nokia bluetooth UART devices
+------
+
+Some vendors have custom versions of their chips, that can be found in Nokia
+devices. These chips are controlled differently, than the non-Nokia version,
+so a different binding is required. All chips listed here implement the Nokia
+H4+ protocol.
+
+Required properties:
+
+  - compatible: should be one of the following:
+	* "nokia,brcm,bcm2048"
+	* "nokia,ti,wl1271-bluetooth"
+  - reset-gpios:		Should specify the gpio for bluetooth reset
+  - host-wakeup-gpios:		Should specify the gpio for host wakeup
+  - bluetooth-wakeup-gpios:	Should specify the gpio for bluetooth wakeup
+  - clock-names:		Should be "sysclk"
+  - clocks:			Should contain a clock phandle for system clock
+
+Example:
+
+/ {
+	/* controlled (enabled/disabled) directly by wl1271 */
+	vctcxo: vctcxo {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <38400000>;
+	};
+};
+
+&uart2 {
+	bluetooth {
+		compatible = "nokia,ti,wl1271-bluetooth";
+
+		reset-gpios = <&gpio1 26 GPIO_ACTIVE_HIGH>; /* 26 */
+		host-wakeup-gpios = <&gpio4 5 GPIO_ACTIVE_HIGH>; /* 101 */
+		bluetooth-wakeup-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>; /* 37 */
+
+		clocks = <&vctcxo>;
+		clock-names = "sysclk";
+	};
+
+};
-- 
2.8.1