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      1 /*
      2  * Copyright 2016 Hans de Goede <hdegoede (at) redhat.com>
      3  *
      4  * This file is dual-licensed: you can use it either under the terms
      5  * of the GPL or the X11 license, at your option. Note that this dual
      6  * licensing only applies to this file, and not this project as a
      7  * whole.
      8  *
      9  *  a) This file is free software; you can redistribute it and/or
     10  *     modify it under the terms of the GNU General Public License as
     11  *     published by the Free Software Foundation; either version 2 of the
     12  *     License, or (at your option) any later version.
     13  *
     14  *     This file is distributed in the hope that it will be useful,
     15  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
     16  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     17  *     GNU General Public License for more details.
     18  *
     19  * Or, alternatively,
     20  *
     21  *  b) Permission is hereby granted, free of charge, to any person
     22  *     obtaining a copy of this software and associated documentation
     23  *     files (the "Software"), to deal in the Software without
     24  *     restriction, including without limitation the rights to use,
     25  *     copy, modify, merge, publish, distribute, sublicense, and/or
     26  *     sell copies of the Software, and to permit persons to whom the
     27  *     Software is furnished to do so, subject to the following
     28  *     conditions:
     29  *
     30  *     The above copyright notice and this permission notice shall be
     31  *     included in all copies or substantial portions of the Software.
     32  *
     33  *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     34  *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
     35  *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
     36  *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
     37  *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
     38  *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     39  *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
     40  *     OTHER DEALINGS IN THE SOFTWARE.
     41  */
     42 
     43 /dts-v1/;
     44 #include "sun8i-a23.dtsi"
     45 #include "sun8i-reference-design-tablet.dtsi"
     46 
     47 / {
     48 	model = "Polaroid MID2407PXE03 tablet";
     49 	compatible = "polaroid,mid2407pxe03", "allwinner,sun8i-a23";
     50 
     51 	aliases {
     52 		ethernet0 = &esp8089;
     53 	};
     54 
     55 	wifi_pwrseq: wifi_pwrseq {
     56 		compatible = "mmc-pwrseq-simple";
     57 		pinctrl-names = "default";
     58 		pinctrl-0 = <&wifi_pwrseq_pin_mid2407>;
     59 		reset-gpios = <&r_pio 0 6 GPIO_ACTIVE_LOW>; /* PL6 */
     60 		/* The esp8089 needs 200 ms after driving wifi-en high */
     61 		post-power-on-delay-ms = <200>;
     62 	};
     63 };
     64 
     65 &gsl1680 {
     66 	vddio-supply = <&reg_ldo_io1>;
     67 	touchscreen-size-x = <960>;
     68 	touchscreen-size-y = <640>;
     69 	touchscreen-inverted-x;
     70 	touchscreen-inverted-y;
     71 	touchscreen-fw-name = "silead/gsl1680-polaroid-mid2407pxe03.fw";
     72 	status = "okay";
     73 };
     74 
     75 &mmc1 {
     76 	pinctrl-names = "default";
     77 	pinctrl-0 = <&mmc1_pins_a>;
     78 	vmmc-supply = <&reg_dldo1>;
     79 	mmc-pwrseq = <&wifi_pwrseq>;
     80 	bus-width = <4>;
     81 	non-removable;
     82 	status = "okay";
     83 
     84 	esp8089: sdio_wifi@1 {
     85 		compatible = "esp,esp8089";
     86 		reg = <1>;
     87 		esp,crystal-26M-en = <2>;
     88 	};
     89 };
     90 
     91 &mmc1_pins_a {
     92 	allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
     93 };
     94 
     95 &r_pio {
     96 	wifi_pwrseq_pin_mid2407: wifi_pwrseq_pin@0 {
     97 		allwinner,pins = "PL6";
     98 		allwinner,function = "gpio_out";
     99 		allwinner,drive = <SUN4I_PINCTRL_10_MA>;
    100 		allwinner,pull = <SUN4I_PINCTRL_NO_PULL>;
    101 	};
    102 };
    103 
    104 &reg_ldo_io1 {
    105 	regulator-min-microvolt = <3300000>;
    106 	regulator-max-microvolt = <3300000>;
    107 	regulator-name = "vcc-touchscreen";
    108 	status = "okay";
    109 };
    110