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| author | Patrick Delaunay <patrick.delaunay@foss.st.com> | 2022-09-20 13:39:56 +0200 |
|---|---|---|
| committer | Patrice Chotard <patrice.chotard@foss.st.com> | 2022-12-12 11:25:19 +0100 |
| commit | 91dae6d0a19e4d19715243487f0d0f8ca5b0c443 (patch) | |
| tree | 18dcea4a86fc8db14652e57f921ef884da69ae8c /lib/efi_loader/efi_conformance.c | |
| parent | 7a7b0856ca01f0dadc940f6f1bc6df44129ad9d0 (diff) | |
phy: usbphyc: use regulator_set_enable_if_allowed for disabling vbus supply
Use regulator_set_enable_if_allowed() api instead of regulator_set_enable()
while disabling vbus supply. This way the driver doesn't see an error
when it disable an always-on regulator for VBUS.
This patch is needed for STM32MP157C-DK2 board when the regulator
v3v3: buck4 used as the phy vbus supply in kernel device tree
is always on with the next hack for low power use-case:
&usbphyc_port0 {
...
/*
* Hack to keep hub active until all connected devices are suspended
* otherwise the hub will be powered off as soon as the v3v3 is disabled
* and it can disturb connected devices.
*/
connector {
compatible = "usb-a-connector";
vbus-supply = <&v3v3>;
};
};
Without this patch and the previous update in DT the command
"usb stop" failed and the next command "usb start" cause a crash.
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Diffstat (limited to 'lib/efi_loader/efi_conformance.c')
0 files changed, 0 insertions, 0 deletions