17 Apr
2023
17 Apr
'23
7 p.m.
On 4/17/23 18:56, Patrice Chotard wrote:
In case USB hub regulator is shared, unexpected behavior occurs. On stm32mp135f-dk, stm32mp157c-ev1 and stm32mp157x-dkx, regulator v3v3 is shared between several IP/devices (USB, panel, ethernet phy, camera, ...). Running command "usb stop", v3v3 regulator is switched off and the splashscreen content disappear.
v3v3 shouldn't be disabled on usb_onboard_hub_remove() callback.
Isn't the regulator enable/disable refcounted ? If not, it should be, that would be the correct fix.