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ARM: dts: sun9i: Enable uart4 for A80 Optimus board 

The A80 Optimus board exposes uart4 on the GPIO expansion header.
Enable it so we can use it.

Also enable the internal pull-ups, as there doesn't seem to be
external pull-up resistors for pins on the expansion header.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit is contained in:
Chen-Yu Tsai 2014-10-31 11:05:51 +08:00 committed by Maxime Ripard
parent 7ed8e0ff22
commit 80204f37d6
1 changed files with 11 additions and 0 deletions
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11
arch/arm/boot/dts/sun9i-a80-optimus.dts
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@ -71,6 +71,11 @@
allwinner,drive = <0>;
allwinner,pull = <0>;
};
uart4_pins_a: uart4@0 {
/* Enable internal pull-up */
allwinner,pull = <1>;
};
};
uart0: serial@07000000 {
@ -79,6 +84,12 @@
status = "okay";
};
uart4: serial@07001000 {
pinctrl-names = "default";
pinctrl-0 = <&uart4_pins_a>;
status = "okay";
};
i2c3: i2c@07003400 {
pinctrl-names = "default";
pinctrl-0 = <&i2c3_pins_a>;