From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id DA887E008CE; Mon, 13 Jul 2015 07:52:04 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-2.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low * trust * [193.201.172.118 listed in list.dnswl.org] * 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider * (picmaster[at]mail.bg) * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] * -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's * domain * 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily * valid * -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Received: from mx2.mail.bg (mx2.mail.bg [193.201.172.118]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 7C643E0086E for ; Mon, 13 Jul 2015 07:52:00 -0700 (PDT) Received: from [192.168.0.62] (unknown [93.152.143.60]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mx2.mail.bg (Postfix) with ESMTPSA id 534BF600288E; Mon, 13 Jul 2015 17:51:59 +0300 (EEST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=mail.bg; s=default; t=1436799119; bh=9t7cGWOv5slaJE0BF14h9WY1RdyjtD8kpVnnCaWccNw=; h=Message-ID:Date:From:MIME-Version:To:Subject:References: In-Reply-To:Content-Type:Content-Transfer-Encoding; b=CHxQrjM5lrW34Vu6JQQyE2k+VP2wdLJQ7ysB6f7CsSptjK1mWK6yZvwMYU7is2QdX EutIkZ+ZDVq0NhkKkqhKWV2Mja31avVNh35iuMsi6pnv+oeFwn4L7pM/QUFpfT2fCN NnyjlOPW2P68NgJCJejcSZH0xg2yxE0J/E0MEn8g= Message-ID: <55A3D08F.3060608@mail.bg> Date: Mon, 13 Jul 2015 17:51:59 +0300 From: Nikolay Dimitrov User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.7.0 MIME-Version: 1.0 To: Gary Thomas , meta-freescale@yoctoproject.org References: <55A3CD11.3020306@mlbassoc.com> In-Reply-To: <55A3CD11.3020306@mlbassoc.com> Subject: Re: Device tree question X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 13 Jul 2015 14:52:04 -0000 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Hi Gary, On 07/13/2015 05:37 PM, Gary Thomas wrote: > A bit off topic, but perhaps someone here knows the answer :-) > > If my device tree has a device/element that is enabled, why would > that device be disabled when I boot? I have this on my (LS1021) board: > quadspi@1550000 { > compatible = "fsl,ls1-qspi"; > #address-cells = <0x00000001>; > #size-cells = <0x00000000>; > reg = <0x00000000 0x01550000 0x00000000 0x00010000 > 0x00000000 0x40000000 0x00000000 0x04000000>; > reg-names = "QuadSPI", "QuadSPI-memory"; > interrupts = <0x00000000 0x00000083 0x00000004>; > clock-names = "qspi_en", "qspi"; > clocks = <0x00000003 0x00000001 0x00000003 0x00000001>; > big-endian; > amba-base = <0x40000000>; > num-cs = <0x00000002>; > status = "okay"; > s70fl01gs@0 { > #address-cells = <0x00000001>; > #size-cells = <0x00000001>; > compatible = "spansion,s70fl01gs"; > spi-max-frequency = <0x02faf080>; > reg = <0x00000000>; > partition@0 { > label = "s70fl01gs-0"; > reg = <0x00000000 0x04000000>; > }; > }; > }; > > However when I boot the system, this device is disabled. > # cat /proc/device-tree/soc/quadspi@1550000/status > disabled > I know this must happen very early on as the device driver > for this device is never even probed. > > Any ideas where/why this becomes disabled and how I keep that > from happening? > Is it possible to have an invalid device node parameter, which can cause the node to become disabled? Have you seen related warn/err messages in the bootlog? Also, is the ls1-qspi driver enabled in the defconfig (stupid question, but sometimes we do such things :D). Regards, Nikolay