Re: [PATCH v 4] usb: dwc2: gadget: Fix enter to hibernation for UTMI+ PHY

On Tue, Jun 03, 2025 at 07:16:32AM +0000, Minas Harutyunyan wrote:

For UTMI+ PHY, according to programming guide, first should be set PMUACTV bit then STOPPCLK bit. Otherwise, when the device issues Remote Wakeup, then host notices disconnect instead. For ULPI PHY, above mentioned bits must be set in reversed order: STOPPCLK then PMUACTV.

Fixes: 4483ef3c1685 ("usb: dwc2: Add hibernation updates for ULPI PHY") Cc: stable@vger.kernel.org Reported-by: Tomasz Mon tomasz.mon@nordicsemi.no Signed-off-by: Minas Harutyunyan Minas.Harutyunyan@synopsys.com

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Changes in v4:

• Rebased on top of Linux 6.15-rc6

Changes in v3:

• Rebased on top of 6.15-rc4

Changes in v2:

• Added Cc: stable@vger.kernel.org

drivers/usb/dwc2/gadget.c | 37 +++++++++++++++++++++++++------------ 1 file changed, 25 insertions(+), 12 deletions(-)

Fails to apply on top of 6.16-rc2 :(