From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752101AbcDWRxM (ORCPT ); Sat, 23 Apr 2016 13:53:12 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:37693 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751959AbcDWRxJ (ORCPT ); Sat, 23 Apr 2016 13:53:09 -0400 To: "linux-next@vger.kernel.org" Cc: Boris Brezillon , Stephen Rothwell , "linux-kernel@vger.kernel.org" , Roger Quadros , Brian Norris , Boris Brezillon , Tony Lindgren , "linux-mtd@lists.infradead.org" , "linux-omap@vger.kernel.org" From: Guenter Roeck Subject: qemu:beagle no longer booting with omap2plus_defconfig in -next Message-ID: <571BB682.1010806@roeck-us.net> Date: Sat, 23 Apr 2016 10:53:06 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: linux@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: linux@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, since next-20160421, I get the following error and hang when trying to boot an omap2plus_defconfig image with qemu, machine 'beagle' and omap3-beagle.dtb. multi_v7_defconfig still works, as does machine 'beaglexm' with omap3-beagle-xm.dtb and omap2plus_defconfig. This is with Linaro's version of qemu. nand: timeout while waiting for chip to become ready The message repeats until the test times out. Bisect points to "Merge remote-tracking branch 'nand/nand/next'" as the offending commit. However, the nand/nand/next branch itself is fine, as is the merge just prior to the nand/nand/next merge ("Merge remote-tracking branch 'l2-mtd/master'"). After some digging, I found that reverting commit "mtd: nand: omap2: Implement NAND ready using gpiolib" fixes the problem. What I don't know, though, is why the problem is only seen with omap2plus_defconfig, but not with multi_v7_defconfig, and why it is only seen with beagle/omap3-beagle.dtb but not with beaglexm/omap3-beagle-xm.dtb. The 'rb-gpios' property is only defined in omap3-beagle.dts, but not in omap3-beagle-xm.dts, which may be part of the explanation. That still doesn't explain, though, why multi_v7_defconfig still works, but not omap2plus_defconfig. Any ideas, anyone ? Thanks, Guenter