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The USB VBUS supply for the type-A port is enabled via a GPIO regulator. This is incorrectly modelled in Linux where only the PCIe dependency is expressed. The correct way to handle this will be through a usb-connector node, but for now we'll just mark the regulator as always-on so that it will be enabled automatically during boot. Reviewed-by: Sumit Garg <sumit.garg@linaro.org> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
10 lines
306 B
Plaintext
10 lines
306 B
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/* Needed for Linux to boot from USB, otherwise if PCIe driver is not in initramfs
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* the VBUS supply will never get turned on.
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* https://lore.kernel.org/linux-arm-msm/20240320122515.3243711-1-caleb.connolly@linaro.org/
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*/
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&pcie0_3p3v_dual {
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regulator-always-on;
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};
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