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https://github.com/brain-hackers/u-boot-brain
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32f67bb7a1
The Libretech ALL-H3-CC has a high density connector for attaching an eMMC module. The module form factor and connection is specific to Libretech, and has provisions for split vmmc/vqmmc (core and I/O) voltage supplies, but this board does not wire the vqmmc side. The H2+/H3/H5 SoCs do not support alternate I/O voltages for eMMC either. Only 3.3V is supported. A specific module that ties vqmmc to vmmc, with both at 3.3V, must be used. Given that a) eMMC is not designed to be hotplugged, b) power is always provided on the pins, and c) MMC controllers can deal with missing cards, we can enable this by default. If a module is attached it will be picked up by the system. The device tree change was also submitted to the Linux Kernel and has already been queued up for 4.19. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Reviewed-by: Jagan Teki <jagan@openedev.com>
176 lines
3.3 KiB
Plaintext
176 lines
3.3 KiB
Plaintext
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (C) 2017 Chen-Yu Tsai <wens@csie.org>
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*/
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#include <dt-bindings/gpio/gpio.h>
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#include <dt-bindings/input/input.h>
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/ {
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aliases {
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ethernet0 = &emac;
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serial0 = &uart0;
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};
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chosen {
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stdout-path = "serial0:115200n8";
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};
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leds {
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compatible = "gpio-leds";
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pwr_led {
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label = "librecomputer:green:pwr";
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gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>; /* PL10 */
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default-state = "on";
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};
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status_led {
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label = "librecomputer:blue:status";
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gpios = <&pio 0 7 GPIO_ACTIVE_HIGH>; /* PA7 */
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};
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};
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gpio_keys {
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compatible = "gpio-keys";
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power {
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label = "power";
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linux,code = <KEY_POWER>;
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gpios = <&r_pio 0 2 GPIO_ACTIVE_LOW>; /* PL2 */
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};
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};
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reg_vcc1v2: vcc1v2 {
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compatible = "regulator-fixed";
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regulator-name = "vcc1v2";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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regulator-boot-on;
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vin-supply = <®_vcc5v0>;
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gpio = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
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enable-active-high;
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};
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reg_vcc3v3: vcc3v3 {
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compatible = "regulator-fixed";
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regulator-name = "vcc3v3";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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vin-supply = <®_vcc5v0>;
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};
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/* This represents the board's 5V input */
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reg_vcc5v0: vcc5v0 {
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compatible = "regulator-fixed";
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regulator-name = "vcc5v0";
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regulator-min-microvolt = <5000000>;
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regulator-max-microvolt = <5000000>;
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};
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reg_vcc_dram: vcc-dram {
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compatible = "regulator-fixed";
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regulator-name = "vcc-dram";
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regulator-min-microvolt = <1500000>;
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regulator-max-microvolt = <1500000>;
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regulator-always-on;
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regulator-boot-on;
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vin-supply = <®_vcc5v0>;
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gpio = <&r_pio 0 9 GPIO_ACTIVE_HIGH>; /* PL9 */
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enable-active-high;
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};
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reg_vcc_io: vcc-io {
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compatible = "regulator-fixed";
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regulator-name = "vcc-io";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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regulator-boot-on;
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vin-supply = <®_vcc3v3>;
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gpio = <&r_pio 0 5 GPIO_ACTIVE_LOW>; /* PL5 */
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};
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reg_vdd_cpux: vdd-cpux {
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compatible = "regulator-fixed";
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regulator-name = "vdd-cpux";
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regulator-min-microvolt = <3300000>;
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regulator-max-microvolt = <3300000>;
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regulator-always-on;
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regulator-boot-on;
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vin-supply = <®_vcc5v0>;
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gpio = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
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enable-active-high;
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};
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};
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&ehci1 {
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status = "okay";
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};
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&ehci2 {
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status = "okay";
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};
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&ehci3 {
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status = "okay";
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};
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&emac {
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phy-handle = <&int_mii_phy>;
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phy-mode = "mii";
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allwinner,leds-active-low;
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status = "okay";
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};
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&ir {
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pinctrl-names = "default";
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pinctrl-0 = <&ir_pins_a>;
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status = "okay";
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};
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&mmc0 {
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vmmc-supply = <®_vcc_io>;
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bus-width = <4>;
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cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
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cd-inverted;
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status = "okay";
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};
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&mmc2 {
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pinctrl-names = "default";
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pinctrl-0 = <&mmc2_8bit_pins>;
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vmmc-supply = <®_vcc_io>;
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bus-width = <8>;
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non-removable;
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status = "okay";
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};
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&ohci1 {
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status = "okay";
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};
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&ohci2 {
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status = "okay";
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};
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&ohci3 {
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status = "okay";
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};
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&uart0 {
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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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&usbphy {
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/* VBUS on USB ports are always on */
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usb0_vbus-supply = <®_vcc5v0>;
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usb1_vbus-supply = <®_vcc5v0>;
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usb2_vbus-supply = <®_vcc5v0>;
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usb3_vbus-supply = <®_vcc5v0>;
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status = "okay";
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};
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