diff mbox series

[3/3] usb: dwc2: prevent core phy initialisation

Message ID 20221206-dwc2-gadget-dual-role-v1-3-36515e1092cd@theobroma-systems.com
State New
Headers show
Series usb: dwc2: fix USB peripheral role in dual-role mode on PX30 | expand

Commit Message

Quentin Schulz Dec. 7, 2022, 1:19 p.m. UTC 
From: Quentin Schulz <quentin.schulz@theobroma-systems.com>

From: Bin Yang <yangbin@rock-chips.com>

The usb phys need to be controlled dynamically on some Rockchip SoCs.
So set the new HCD flag which prevents USB core from trying to manage
our phys.

Signed-off-by: Bin Yang <yangbin@rock-chips.com>
Signed-off-by: Frank Wang <frank.wang@rock-chips.com>
Signed-off-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
---
 drivers/usb/dwc2/hcd.c | 7 +++++++
 1 file changed, 7 insertions(+)
diff mbox series

Patch

diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c
index 657f1f659ffaf..757a66fa32fa8 100644
--- a/drivers/usb/dwc2/hcd.c
+++ b/drivers/usb/dwc2/hcd.c
@@ -5315,6 +5315,13 @@  int dwc2_hcd_init(struct dwc2_hsotg *hsotg)
 	if (!IS_ERR_OR_NULL(hsotg->uphy))
 		otg_set_host(hsotg->uphy->otg, &hcd->self);
 
+	/*
+	 * do not manage the PHY state in the HCD core, instead let the driver
+	 * handle this (for example if the PHY can only be turned on after a
+	 * specific event)
+	 */
+	hcd->skip_phy_initialization = 1;
+
 	/*
 	 * Finish generic HCD initialization and start the HCD. This function
 	 * allocates the DMA buffer pool, registers the USB bus, requests the