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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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80204f37d6
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>
120 lines
3.4 KiB
Plaintext
120 lines
3.4 KiB
Plaintext
/*
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* Copyright 2014 Chen-Yu Tsai
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*
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* Chen-Yu Tsai <wens@csie.org>
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*
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* This file is dual-licensed: you can use it either under the terms
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* of the GPL or the X11 license, at your option. Note that this dual
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* licensing only applies to this file, and not this project as a
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* whole.
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*
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* a) This file is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or (at your option) any later version.
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*
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* This file is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this file; if not, write to the Free
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* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*
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* Or, alternatively,
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*
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* b) Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/dts-v1/;
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/include/ "sun9i-a80.dtsi"
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/ {
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model = "Merrii A80 Optimus Board";
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compatible = "merrii,a80-optimus", "allwinner,sun9i-a80";
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chosen {
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bootargs = "earlyprintk console=ttyS0,115200";
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};
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soc {
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pio: pinctrl@06000800 {
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i2c3_pins_a: i2c3@0 {
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/* Enable internal pull-up */
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allwinner,pull = <1>;
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};
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led_pins_optimus: led-pins@0 {
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allwinner,pins = "PH0", "PH1";
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allwinner,function = "gpio_out";
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allwinner,drive = <0>;
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allwinner,pull = <0>;
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};
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uart4_pins_a: uart4@0 {
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/* Enable internal pull-up */
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allwinner,pull = <1>;
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};
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};
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uart0: serial@07000000 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart0_pins_a>;
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status = "okay";
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};
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uart4: serial@07001000 {
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pinctrl-names = "default";
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pinctrl-0 = <&uart4_pins_a>;
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status = "okay";
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};
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i2c3: i2c@07003400 {
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pinctrl-names = "default";
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pinctrl-0 = <&i2c3_pins_a>;
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status = "okay";
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};
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};
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leds {
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compatible = "gpio-leds";
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pinctrl-names = "default";
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pinctrl-0 = <&led_pins_optimus>;
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/* The LED names match those found on the board */
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led2 {
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label = "optimus:led2:usr";
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gpios = <&pio 7 1 0>;
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};
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/* led3 is on PM15, in R_PIO */
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led4 {
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label = "optimus:led4:usr";
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gpios = <&pio 7 0 0>;
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};
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};
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};
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