From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id D392FC352A3 for ; Tue, 11 Feb 2020 14:44:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B0ACF2086A for ; Tue, 11 Feb 2020 14:44:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730227AbgBKOod (ORCPT ); Tue, 11 Feb 2020 09:44:33 -0500 Received: from mga06.intel.com ([134.134.136.31]:54897 "EHLO mga06.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727728AbgBKOoc (ORCPT ); Tue, 11 Feb 2020 09:44:32 -0500 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga104.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 11 Feb 2020 06:44:31 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.70,428,1574150400"; d="scan'208";a="347290682" Received: from kuha.fi.intel.com ([10.237.72.53]) by fmsmga001.fm.intel.com with SMTP; 11 Feb 2020 06:44:29 -0800 Received: by kuha.fi.intel.com (sSMTP sendmail emulation); Tue, 11 Feb 2020 16:44:29 +0200 Date: Tue, 11 Feb 2020 16:44:29 +0200 From: Heikki Krogerus To: Oliver Neukum Cc: linux-usb@vger.kernel.org Subject: Re: No PNP0CA0 device on a Dell Precision 5520 laptop Message-ID: <20200211144429.GD1498@kuha.fi.intel.com> References: <1581427518.1580.3.camel@suse.de> <20200211135920.GB1498@kuha.fi.intel.com> <1581430450.1580.5.camel@suse.de> <20200211142855.GC1498@kuha.fi.intel.com> <1581431677.1580.7.camel@suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1581431677.1580.7.camel@suse.de> Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org On Tue, Feb 11, 2020 at 03:34:37PM +0100, Oliver Neukum wrote: > Am Dienstag, den 11.02.2020, 16:28 +0200 schrieb Heikki Krogerus: > > On Tue, Feb 11, 2020 at 03:14:10PM +0100, Oliver Neukum wrote: > > > Am Dienstag, den 11.02.2020, 15:59 +0200 schrieb Heikki Krogerus: > > > > cat /sys/bus/acpi/devices/USBC000\:00/status > > > > > > Technically -ENODEV. It does not exist, even in a listing. > > > But this thing definitely has a type C port. It is connected > > > to a docking station which supplies the whole system with power. > > > Ethernet also works. > > > > There is still no requirement for the BIOS or the EC firmware to > > expose UCSI to the operating system. If the ACPI node is not there, > > then there is no UCSI on that system. The USB Type-C connectors > > function autonomously in any case on a system that exposes them to the > > operating system with UCSI. UCSI is more like an optional status > > interface that allows limited control over some specific things like > > role swapping. > > > > UCSI is usually supported when the USB Power Delivery (USB PD) > > controllers are connected to the Embedded Controller on the system, > > but on some of our platforms they are directly connected to the SOC > > instead. So on those platforms we can directly communicate with the > > USB PD controller from the operating system, which is actually much > > better situation compared to UCSI IMO. > > > > Do you have this ACPI node: INT3515 ? > > > > It's for the TI TPS6598x USB PD controllers. > > Hi, > > yes I got that one. Thanks for the tip. OK, cool! Let me know if the tps6598x.c driver works with that. thanks, -- heikki