Link Power Management (LPM) on STM32MP15 OTG HS encounters instabilities
with some Host controllers. OTG core fails to exit L1 state in 200us:
"dwc2
49000000.usb-otg: Failed to exit L1 sleep state in 200us."
Then the device is still not enumerated.
To avoid this issue, disable Link Power Management on STM32MP15 HS OTG.
Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Link: https://lore.kernel.org/r/20210105094855.30763-4-amelie.delaunay@foss.st.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
p->host_perio_tx_fifo_size = 256;
p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT;
p->power_down = DWC2_POWER_DOWN_PARAM_NONE;
+ p->lpm = false;
+ p->lpm_clock_gating = false;
+ p->besl = false;
+ p->hird_threshold_en = false;
}
const struct of_device_id dwc2_of_match_table[] = {