From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from baldur.buserror.net (baldur.buserror.net [165.227.176.147]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 41zlRJ0V04zDqSL for ; Tue, 28 Aug 2018 07:30:19 +1000 (AEST) Message-ID: <07ad630cccbd33c81031f690fd17cdc30b662e49.camel@buserror.net> From: Scott Wood To: Christian Zigotzky , linuxppc-dev@lists.ozlabs.org Date: Mon, 27 Aug 2018 16:28:03 -0500 In-Reply-To: <196C6151-3085-4A42-B6D6-5891F4AF9759@xenosoft.de> References: <0F797F4E-755B-499C-BA74-48CC03235393@xenosoft.de> <76A7B415-F6D4-4BF8-B4B7-B146C5337CF8@xenosoft.de> <196C6151-3085-4A42-B6D6-5891F4AF9759@xenosoft.de> Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Subject: Re: FSL/NXP P5020: USB problems with the latest Git kernels List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Mon, 2018-08-27 at 20:15 +0200, Christian Zigotzky wrote: > Hello, > > Our users tested the RC1 of kernel 4.19 on their P5020 boards today. > Unfortunately the USB bug still exists. With mem values bigger than 4096M, > the USB mouse and keyboard doesn’t work. With the bootarg mem=4096M, the USB > devices work without any problems. Please compile the RC1 and test it on > your P5020 board. There is a problem with the memory management since > 22/08/18. I just tested 4.19-rc1 on a T4240 and got a similar problem with MMC. MMC and USB on these chips both have a 32-bit DMA limitation. I'll look into it. -Scott