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https://github.com/brain-hackers/u-boot-brain
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062baa2566
If the VBUS regulator is always-on, XHCI will fail to detect USB 3.0 devices; USB 2.0 devices will work however. Make the VBUS regulator controllable and tie it to only the XHCI. This makes all three USB ports usable. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
28 lines
649 B
Plaintext
28 lines
649 B
Plaintext
// SPDX-License-Identifier: GPL-2.0+
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/*
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* (C) Copyright 2018-2019 Rockchip Electronics Co., Ltd
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*/
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#include "rk3328-u-boot.dtsi"
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#include "rk3328-sdram-lpddr3-1600.dtsi"
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/ {
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chosen {
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u-boot,spl-boot-order = "same-as-spl", &sdmmc, &emmc;
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};
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};
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&usb_host0_xhci {
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vbus-supply = <&vcc_host_5v>;
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status = "okay";
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};
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/*
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* This makes XHCI responsible for toggling VBUS. This is needed to work
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* around an issue where either XHCI only works with USB 2.0 or OTG doesn't
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* work, depending on how VBUS is configured. Having USB 3.0 seems better.
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*/
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&vcc_host_5v {
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/delete-property/ regulator-always-on;
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/delete-property/ regulator-boot-on;
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};
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