[PATCH] dwc3: Fix fastboot re-run failure with flat DTS

[Marek Vasut]

On 5/29/26 2:22 PM, Balaji Selvanathan wrote:
> Problem: The first "run fastboot" works and enumerates on the host.
> Subsequent runs fail, with no USB enumeration observed.
> 
> With flat DTS configurations, the peripheral device inherits
> power-domains from its parent (glue) node, as both reference the
> same DT node. During teardown after "fastboot continue",
> device_remove() of peripheral device invokes dev_power_domain_off(),
> which powers off the shared USB GDSC.
> 
> As a result, the next "run fastboot" fails because the power
> domain is left in an uninitialized state.
> 
> Add DM_FLAG_LEAVE_PD_ON to dwc3_generic_peripheral to prevent
> power domain shutdown during peripheral removal.
It seems the driver does not handle its power domains correctly, 
inhibiting PD control is not a fix, sorry.