arch/arm64/boot/dts/freescale/imx8mp-verdin-dev.dtsi

   1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
   2 /*
   3  * Copyright 2022 Toradex
   4  */
   5
   6 #include "imx8mp-verdin-dahlia.dtsi"
   7
   8 / {
   9         /* TODO: Audio Codec */
  10
  11         reg_eth2phy: regulator-eth2phy {
  12                 compatible = "regulator-fixed";
  13                 enable-active-high;
  14                 gpio = <&gpio_expander_21 4 GPIO_ACTIVE_HIGH>; /* ETH_PWR_EN */
  15                 off-on-delay-us = <500000>;
  16                 regulator-max-microvolt = <3300000>;
  17                 regulator-min-microvolt = <3300000>;
  18                 regulator-name = "+V3.3_ETH";
  19                 startup-delay-us = <200000>;
  20                 vin-supply = <&reg_3p3v>;
  21         };
  22 };
  23
  24 &fec {
  25         phy-supply = <&reg_eth2phy>;
  26         status = "okay";
  27 };
  28
  29 &gpio_expander_21 {
  30         status = "okay";
  31         vcc-supply = <&reg_1p8v>;
  32 };
  33
  34 /* TODO: Verdin I2C_1 with Audio Codec */
  35
  36 /* Verdin UART_1, connector X50 through RS485 transceiver */
  37 &uart1 {
  38         linux,rs485-enabled-at-boot-time;
  39         rs485-rts-active-low;
  40         rs485-rx-during-tx;
  41 };
  42
  43 /* Limit frequency on dev board due to long traces and bad signal integrity */
  44 &usdhc2 {
  45         max-frequency = <100000000>;
  46 };