Date: Fri, 15 Jan 2021 15:28:33 +0000 From: bugzilla-noreply@freebsd.org To: usb@FreeBSD.org Subject: [Bug 252712] Webcam does not work when attached to xhci(4) but does attached to ehci(4) Message-ID: <bug-252712-19105-Czdk6gYG1v@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-252712-19105@https.bugs.freebsd.org/bugzilla/> References: <bug-252712-19105@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D252712 Hans Petter Selasky <hselasky@FreeBSD.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hselasky@FreeBSD.org --- Comment #1 from Hans Petter Selasky <hselasky@FreeBSD.org> --- It is likely a bug regarding the bandwidth allocation for XHCI ISOCH endpoi= nts. When we setup an endpoint context we need to fill in some parameters to tell the hardware how many bytes to reserve. Likely these are wrong: Refer to: XHCI_EPCTX_4_MAX_ESIT_PAYLOAD_SET(max_frame_size) in xhci.c Maybe you can play with the parameter. --HPS --=20 You are receiving this mail because: You are the assignee for the bug.=
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