From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 274E31B0117; Wed, 5 Jun 2024 11:53:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717588402; cv=none; b=AMJi8JnDmXPxBoEqdnDNoqCJpNVAlLcymlSkvXlEXGvZGloSge1fHZmRK0gzmTya6NZEb6rkoZuS3yZ5fpRCuOBtxY0+5XgjJl6VxRyxs5AegxyrzEPydVIWQW0J3eX97BJ4YtqL6CNhuK0YHkoAR86ukVqVVKKOn6Fj2TIaMBk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717588402; c=relaxed/simple; bh=JUFUBLSPCoj+I9mnYkjmtKDkiyT83/kvukVxvmt/7KE=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=CbacEDhPzx4W4kNZuHhvuGjqQnjI8ll/hpenXMPmm3YrOsd4WO8IE1GLeYt88m3uqVeIfZ8ncKuTBKO/FAWOhae8KXKh8nrPLlPxw4Lg+VnBWZjv6FJ26WV8Sc7zGB46dAJqteYn4kQSvPVoVAC9EvUQfAcuGxgIkM5peycoO5U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Gta6f3D6; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Gta6f3D6" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BC6F6C3277B; Wed, 5 Jun 2024 11:53:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1717588401; bh=JUFUBLSPCoj+I9mnYkjmtKDkiyT83/kvukVxvmt/7KE=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Gta6f3D6odVBdNeiHvZRcRfIvNLsNrzMCuubTl/PJpa2q44HECwEPD8iRL7h8cyK0 l2tIOd0fPJgef+aOJbUd39PEUf1xaS0DfFYNMWBqtQxV/r1r6phaJOKlC8ECu1eNIe LHFJyNvsPFtW0kWRPD1kSGHWLQP+UXYlDwbulW4cVV//Pgyc+LHtd1H3eDFGT7m2h7 F4SwouJwQdzDbTSK5mmUqThEaNTQRvawXIF7atrxDFq7md9f073RxNhpAg2ZlngJ/y zeEWcDEn2aV9J5DfEZdQ2boFJ2Qg6f06EovcOY2jauA6j3PZFGGOtbH+nQMdgvVWKc Sa0CNswms8GBA== Received: from johan by xi.lan with local (Exim 4.97.1) (envelope-from ) id 1sEpCk-000000000wA-2ky3; Wed, 05 Jun 2024 13:53:23 +0200 Date: Wed, 5 Jun 2024 13:53:22 +0200 From: Johan Hovold To: Sasha Levin Cc: linux-kernel@vger.kernel.org, stable@vger.kernel.org, Krishna Kurapati , Bjorn Andersson , Thinh Nguyen , Johan Hovold , Greg Kroah-Hartman , linux-usb@vger.kernel.org Subject: Re: [PATCH AUTOSEL 6.9 16/28] usb: dwc3: core: Access XHCI address space temporarily to read port info Message-ID: References: <20240605114927.2961639-1-sashal@kernel.org> <20240605114927.2961639-16-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240605114927.2961639-16-sashal@kernel.org> On Wed, Jun 05, 2024 at 07:48:45AM -0400, Sasha Levin wrote: > From: Krishna Kurapati > > [ Upstream commit 921e109c6200741499ad0136e41cca9d16431c92 ] > > All DWC3 Multi Port controllers that exist today only support host mode. > Temporarily map XHCI address space for host-only controllers and parse > XHCI Extended Capabilities registers to read number of usb2 ports and > usb3 ports present on multiport controller. Each USB Port is at least HS > capable. > > The port info for usb2 and usb3 phy are identified as num_usb2_ports > and num_usb3_ports and these are used as iterators for phy operations > and for modifying GUSB2PHYCFG/ GUSB3PIPECTL registers accordingly. > > Signed-off-by: Krishna Kurapati > Reviewed-by: Bjorn Andersson > Acked-by: Thinh Nguyen > Reviewed-by: Johan Hovold > Tested-by: Johan Hovold > Link: https://lore.kernel.org/r/20240420044901.884098-3-quic_kriskura@quicinc.com > Signed-off-by: Greg Kroah-Hartman > Signed-off-by: Sasha Levin This is not a fix. Please drop. Johan