linux_dsm_epyc7002/arch/arm/boot/dts/sun9i-a80-optimus.dts
Chen-Yu Tsai 80204f37d6 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>
2014-11-23 16:53:04 +01:00

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/*
* Copyright 2014 Chen-Yu Tsai
*
* Chen-Yu Tsai <wens@csie.org>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this file; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
* MA 02110-1301 USA
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
/dts-v1/;
/include/ "sun9i-a80.dtsi"
/ {
model = "Merrii A80 Optimus Board";
compatible = "merrii,a80-optimus", "allwinner,sun9i-a80";
chosen {
bootargs = "earlyprintk console=ttyS0,115200";
};
soc {
pio: pinctrl@06000800 {
i2c3_pins_a: i2c3@0 {
/* Enable internal pull-up */
allwinner,pull = <1>;
};
led_pins_optimus: led-pins@0 {
allwinner,pins = "PH0", "PH1";
allwinner,function = "gpio_out";
allwinner,drive = <0>;
allwinner,pull = <0>;
};
uart4_pins_a: uart4@0 {
/* Enable internal pull-up */
allwinner,pull = <1>;
};
};
uart0: serial@07000000 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pins_a>;
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>;
status = "okay";
};
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&led_pins_optimus>;
/* The LED names match those found on the board */
led2 {
label = "optimus:led2:usr";
gpios = <&pio 7 1 0>;
};
/* led3 is on PM15, in R_PIO */
led4 {
label = "optimus:led4:usr";
gpios = <&pio 7 0 0>;
};
};
};