From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Norris Subject: Re: [REGRESSION 4.10] dw_mmc: failures on Rockchip rk3288 veyron boards Date: Wed, 29 Mar 2017 19:53:46 -0700 Message-ID: <20170330025345.GA29421@google.com> References: <20170330011709.GA110687@google.com> <6d87cb71-1339-0dc9-e071-1c117f541881@rock-chips.com> <20170330014230.GA21467@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from mail-pg0-f49.google.com ([74.125.83.49]:32831 "EHLO mail-pg0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754609AbdC3Cxu (ORCPT ); Wed, 29 Mar 2017 22:53:50 -0400 Received: by mail-pg0-f49.google.com with SMTP id x125so25094411pgb.0 for ; Wed, 29 Mar 2017 19:53:49 -0700 (PDT) Content-Disposition: inline In-Reply-To: Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Eddie Cai Cc: Shawn Lin , Heiko Stuebner , Ziyuan Xu , linux-mmc@vger.kernel.org, Jaehoon Chung , linux-rockchip@lists.infradead.org, amstan@chromium.org, Kevin Mihelich Hi Eddie, On Thu, Mar 30, 2017 at 10:18:59AM +0800, Eddie Cai wrote: > I test on rk3288 firefly reload with 4.11-rc4. It work fine. OK, thanks for checking. > > On Thu, Mar 30, 2017 at 09:32:22AM +0800, Shawn Lin wrote: > >> Hi Brian, > >> > >> On 2017/3/30 9:17, Brian Norris wrote: > >> >Hi all, > >> > > >> >I haven't managed to get as far as a bugfix for this, but I've bisected > >> >some issues seen on v4.10+ with a Chromebook of the Veyron family (Jaq, > >> >in particular). v4.9 works fine. [...] By the way, Kevin (CC'd) says he noticed similiar Wifi issues on an Exynos 5800 Peach chromebook, but not on an Exynos 5250 Snow chromebook. I haven't picked these apart yet to see what the differences and similarities are, but presumably it's not actually a Rockchip-specific bug. Maybe related to the way power sequencing is plumbed for these, for example? Brian