lkml.org 
[lkml]   [2017]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] ARM: dts: omap4-droid4: add bluetooth
Date
Droid 4 has wl1835 connected to the OMAP's UART4 port, which is
used for Bluetooth and most likely can also be used for controlling
the FM radio and GPS receivers.

Signed-off-by: Sebastian Reichel <sre@kernel.org>
---
Hi,

Thanks to the work of Rob adding Bluetooth support for Droid 4 was
straight forward :) I did a short test scanning for available devices
using bluetoothctl. For that I had to rebind the bluetooth device,
since it has been initialized before rootfs/firmware was available
(builtin driver):

echo serial0-0 > /sys/bus/serial/drivers/hci-ti/unbind
echo serial0-0 > /sys/bus/serial/drivers/hci-ti/bind

According to my research the FM module should be functional on
Droid 4 and the wl1835's GPS is also used. Rob, do you have a
plans for supporting the extra resources?

-- Sebastian
---
arch/arm/boot/dts/omap4-droid4-xt894.dts | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)

diff --git a/arch/arm/boot/dts/omap4-droid4-xt894.dts b/arch/arm/boot/dts/omap4-droid4-xt894.dts
index e0fdfe6cc78c..2495faf79a43 100644
--- a/arch/arm/boot/dts/omap4-droid4-xt894.dts
+++ b/arch/arm/boot/dts/omap4-droid4-xt894.dts
@@ -395,6 +395,15 @@
>;
};

+ uart4_pins: pinmux_uart4_pins {
+ pinctrl-single,pins = <
+ OMAP4_IOPAD(0x15c, PIN_INPUT | MUX_MODE0) /* uart4_rx */
+ OMAP4_IOPAD(0x15e, PIN_OUTPUT | MUX_MODE0) /* uart4_tx */
+ OMAP4_IOPAD(0x110, PIN_INPUT_PULLUP | MUX_MODE5) /* uart4_cts */
+ OMAP4_IOPAD(0x112, PIN_OUTPUT_PULLUP | MUX_MODE5) /* uart4_rts */
+ >;
+ };
+
mcbsp2_pins: pinmux_mcbsp2_pins {
pinctrl-single,pins = <
OMAP4_IOPAD(0x0f6, PIN_INPUT | MUX_MODE0) /* abe_mcbsp2_clkx */
@@ -429,6 +438,17 @@
&omap4_pmx_core 0x17c>;
};

+&uart4 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&uart4_pins>;
+
+ bluetooth {
+ compatible = "ti,wl1835-st";
+ enable-gpios = <&gpio6 14 GPIO_ACTIVE_HIGH>; /* gpio 174 */
+ max-speed = <3686400>;
+ };
+};
+
&usbhsehci {
phys = <&hsusb1_phy>;
};
--
2.11.0
\
 
 \ /
  Last update: 2017-04-16 00:20    [W:1.199 / U:0.008 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site