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 <[email protected]> --- arch/arm/boot/dts/sun9i-a80-optimus.dts | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm/boot/dts/sun9i-a80-optimus.dts b/arch/arm/boot/dts/sun9i-a80-optimus.dts index 87b1355..506948f 100644 --- a/arch/arm/boot/dts/sun9i-a80-optimus.dts +++ b/arch/arm/boot/dts/sun9i-a80-optimus.dts @@ -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>; -- 2.1.1 -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
