© 2014 Digi International Inc.
14
ConnectCore 6 Linux BSP Reference Manual
Backlight
The Dialog DA9030 PMIC provides three PWM outputs two of which are used for LCD backlight
control.
DA9030 PMIC’s gpio binding is described at
Documentation/devicetree/bindings/gpio/gpio-
da9063.txt
For information about backlight control in Linux please refer to the kernel documentation at
Documentation/ABI/stable/sysfs-class-backlight
.
Watchdog
Device Tree binding for watchdog is described at
Documentation/devicetree/bindings/watchdog/
fsl-imx-wdt.txt.
A sample application called
wd_test
is available and can be added to the rootfs by adding “dey-
examples” to the EXTRA_IMAGE_FEATURES of your
local.conf
or by adding “dey-examples-
watchdog” to IMAGE_INSTALL_append.
The watchdog test application sets the watchdog timeout value and refreshes the watchdog
timer every second during the test time. After the test time is over, the watchdog is not
refreshed anymore and the driver executes a reset.
diff
--
git
a
/
arch
/
arm
/
boot
/
dts
/
imx6
-
ccimx6adpt
.
dts
b
/
arch
/
arm
/
boot
/
dts
/
imx6
-
ccimx6adpt
.
dts
index
b00644bdd7a9
..
25e9d5b49846
100644
---
a
/
arch
/
arm
/
boot
/
dts
/
imx6
-
ccimx6adpt
.
dts
+++
b
/
arch
/
arm
/
boot
/
dts
/
imx6
-
ccimx6adpt
.
dts
@@
-
243
,
10
+
243
,
10
@@
&ldb
{
ipu_id
=
<0>;
‐
disp_id
=
<0>;
+
disp_id
=
<1>;
ext_ref
=
<1>;
‐
mode
=
"sin0";
+
mode
=
"sin1";
sec_ipu_id
=
<0>;
‐
sec_disp_id
=
<1>;
+
sec_disp_id
=
<0>;
status
=
"okay";
};
