Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965809AbcJYK7a (ORCPT ); Tue, 25 Oct 2016 06:59:30 -0400 Received: from arroyo.ext.ti.com ([198.47.19.12]:51976 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932843AbcJYK72 (ORCPT ); Tue, 25 Oct 2016 06:59:28 -0400 Subject: Re: [PATCH 5/5] ARM: dts: Add LEGO MINDSTORTMS EV3 dts To: David Lechner , Kevin Hilman References: <1477075018-20176-1-git-send-email-david@lechnology.com> <1477075018-20176-6-git-send-email-david@lechnology.com> <1593441f-d147-4c91-8aab-8622dd8ced19@lechnology.com> <84648cb0-f1fa-d88b-bac2-79208af01ca6@lechnology.com> CC: Rob Herring , Mark Rutland , Russell King , , , From: Sekhar Nori Message-ID: <0b7cf7a1-e234-2868-dfde-347c92c23829@ti.com> Date: Tue, 25 Oct 2016 16:28:02 +0530 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.3.0 MIME-Version: 1.0 In-Reply-To: <84648cb0-f1fa-d88b-bac2-79208af01ca6@lechnology.com> Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1759 Lines: 47 On Tuesday 25 October 2016 02:50 AM, David Lechner wrote: > On 10/24/2016 02:50 PM, David Lechner wrote: >> On 10/24/2016 10:50 AM, David Lechner wrote: >>> On 10/24/2016 06:58 AM, Sekhar Nori wrote: >>>> On Saturday 22 October 2016 12:06 AM, David Lechner wrote: >>>> >>>>> +&ehrpwm1 { >>>>> + status = "disabled"; >>>> >>>> Hmm, disabled? Can you add this node when you actually use it? >>> >>> Not sure why I have this disabled. Like the gpios, the pwms can be used >>> via sysfs, so I would like to leave them. >>> >> >> Now I remember why these are disabled. The clock matching is broken. >> Only the first ehrpwm and the first ecap get clocks. The others fail. >> >> I can change these to "okay". It will just result in a kernel error >> message until the clocks are fixed. >> > > correction: it is not the clocks that are broken. it is the device names. > > In arch/arm/mach-davinci/da8xx-dt.c, we have... > > > OF_DEV_AUXDATA("ti,da850-ehrpwm", 0x01f00000, "ehrpwm", NULL), > OF_DEV_AUXDATA("ti,da850-ehrpwm", 0x01f02000, "ehrpwm", NULL), > OF_DEV_AUXDATA("ti,da850-ecap", 0x01f06000, "ecap", NULL), > OF_DEV_AUXDATA("ti,da850-ecap", 0x01f07000, "ecap", NULL), > OF_DEV_AUXDATA("ti,da850-ecap", 0x01f08000, "ecap", NULL), > > > Which causes each device to have the same device node name. This causes > sysfs errors because it is trying to register a second device at the > same sysfs path. > > If you change the names here, then the device do not work because the > clock lookup fails. Yeah, this is incorrect (I should have caught it in review). The device id should have been present in the lookup. Can you fix auxdata and clock lookup too and send a separate patch? Its probably a v4.9-rc candidate. Thanks, Sekhar