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

From: Quentin Schulz
Date: Wed Dec 07 2022 - 08:19:59 EST


From: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxxxxx>

From: Bin Yang <yangbin@xxxxxxxxxxxxxx>

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@xxxxxxxxxxxxxx>
Signed-off-by: Frank Wang <frank.wang@xxxxxxxxxxxxxx>
Signed-off-by: Quentin Schulz <quentin.schulz@xxxxxxxxxxxxxxxxxxxxx>
---
drivers/usb/dwc2/hcd.c | 7 +++++++
1 file changed, 7 insertions(+)

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

--
b4 0.10.1