From patchwork Tue Oct 6 15:37:11 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tony Lindgren X-Patchwork-Id: 7336491 Return-Path: X-Original-To: patchwork-linux-mmc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 7742ABEEA4 for ; Tue, 6 Oct 2015 15:37:23 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id A6C172066A for ; Tue, 6 Oct 2015 15:37:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BE3C3206EB for ; Tue, 6 Oct 2015 15:37:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753504AbbJFPhS (ORCPT ); Tue, 6 Oct 2015 11:37:18 -0400 Received: from muru.com ([72.249.23.125]:56304 "EHLO muru.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753436AbbJFPhQ (ORCPT ); Tue, 6 Oct 2015 11:37:16 -0400 Received: from atomide.com (localhost [127.0.0.1]) by muru.com (Postfix) with ESMTPS id 7699B822B; Tue, 6 Oct 2015 15:41:21 +0000 (UTC) Date: Tue, 6 Oct 2015 08:37:11 -0700 From: Tony Lindgren To: Russell King - ARM Linux Cc: Nishanth Menon , Ulf Hansson , linux-mmc , Felipe Balbi , Kishon Vijay Abraham I , "arm@kernel.org" , linux-omap@vger.kernel.org, "linux-arm-kernel@lists.infradead.org" Subject: Re: All OMAP platforms: MMC is broken Message-ID: <20151006153710.GS23801@atomide.com> References: <20151001100326.GV21513@n2100.arm.linux.org.uk> <20151005112304.GZ23801@atomide.com> <20151005143532.GA23801@atomide.com> <20151005145127.GB23801@atomide.com> <20151005171155.GF23801@atomide.com> <20151005183813.GD21626@n2100.arm.linux.org.uk> <20151006090015.GE21626@n2100.arm.linux.org.uk> <20151006094425.GM23801@atomide.com> <20151006150009.GF21626@n2100.arm.linux.org.uk> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20151006150009.GF21626@n2100.arm.linux.org.uk> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP * Russell King - ARM Linux [151006 08:04]: > On Tue, Oct 06, 2015 at 02:44:25AM -0700, Tony Lindgren wrote: > > > > Hmm DT-based boot finds the MMC card for LDP, dmesg below from DT boot [1]. > > Looks like you're on on -rc4 and not -rc3. My guess is that MMC is not > > working for you with DT-based booting because you don't seem to have > > CONFIG_REGULATOR_PBIAS in your seed config for. Care to try enabling that > > for both your omap3 and omap4 seed config files? > > This is precisely the kind of crap I'm objecting to. New kernel versions > come along, and things break because people add extra Kconfig symbols that > previous versions did not rely upon - and there's no communication of > what's required for new kernel versions. > > This stuff needs documenting, so that people are aware what changes they > need to make - please put something in Documentation/arm/OMAP which > tracks what new additions are required to the Kconfig to keep things > working. Good idea, how about something like the following? AFAIK that's the only .config option needed as MFD_SYSCON is selected by Kconfig already. Regrds, Tony 8< ---------- From: Tony Lindgren Date: Tue, 6 Oct 2015 08:33:16 -0700 Subject: [PATCH] Documentation: ARM: List new omap MMC requirements Earlier the PBIAS regulator was optional, not so with recent omap_hsmmc changes. To make things easier for people with custom .config files, let's add minimal documentation for it as suggested by Russell King . Signed-off-by: Tony Lindgren Tested-by: Russell King --- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html --- /dev/null +++ b/Documentation/arm/OMAP/README @@ -0,0 +1,7 @@ +This file contains documentation for running mainline +kernel on omaps. + +KERNEL NEW DEPENDENCIES +v4.3+ Update is needed for custom .config files to make sure + CONFIG_REGULATOR_PBIAS is enabled for MMC1 to work + properly.