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https://github.com/brain-hackers/u-boot-brain
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21a1bc6a90
For the proper reboot Odroid-C4 board requires to switch TFLASH_VDD_EN pin to the high impedance mode, otherwise the board is stuck in the middle of loading early stages of the bootloader from SD card. This can be achieved by using the OPEN_DRAIN flag instead if the ACTIVE_HIGH, what will leave the pin in input to achieve high state (pin has the pull-up) and solve the issue. Suggested-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
18 lines
392 B
Plaintext
18 lines
392 B
Plaintext
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (c) 2020 BayLibre, SAS
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* Author: Neil Armstrong <narmstrong@baylibre.com>
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*/
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#include "meson-sm1-u-boot.dtsi"
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ðmac {
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snps,reset-gpio = <&gpio GPIOZ_15 (GPIO_ACTIVE_LOW | GPIO_OPEN_DRAIN)>;
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snps,reset-delays-us = <0 10000 1000000>;
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snps,reset-active-low;
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};
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&tflash_vdd {
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gpio = <&gpio_ao GPIOAO_3 GPIO_OPEN_DRAIN>;
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};
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