From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934395AbeCHBYs (ORCPT ); Wed, 7 Mar 2018 20:24:48 -0500 Received: from mail-pg0-f68.google.com ([74.125.83.68]:41598 "EHLO mail-pg0-f68.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755021AbeCHBYq (ORCPT ); Wed, 7 Mar 2018 20:24:46 -0500 X-Google-Smtp-Source: AG47ELt5HVpGRo8Cv3GU/LonC5FJeLY+YKmPlI+T4qPkzrM7phmrtTVahEhqwR1sctXqYNH47KCUWQ== From: Kevin Hilman To: Jerome Brunet Cc: Carlo Caione , ellierevves@gmail.com, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] ARM64: dts: meson: reduce odroid-c2 eMMC maximum rate Organization: BayLibre References: <20180302134436.18844-1-jbrunet@baylibre.com> Date: Wed, 07 Mar 2018 17:24:43 -0800 In-Reply-To: <20180302134436.18844-1-jbrunet@baylibre.com> (Jerome Brunet's message of "Fri, 2 Mar 2018 14:44:36 +0100") Message-ID: <7hy3j3fjfo.fsf@baylibre.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Jerome Brunet writes: > Different modules maybe installed by the user on the eMMC connector > of the odroid-c2. While the red modules are working without an issue, > it seems some black modules (apparently Samsung based) are having > issue at 200MHz > > While the tuning algorithm introduced in v4.14 enables high speed modes > on every other tested designs, it seems a problem remains for this > particular combination of board and eMMC module. > > Lowering the maximum frequency of the eMMC on this board until we can > figure out a better solution. > > Fixes: d341ca88eead ("mmc: meson-gx: rework tuning function") > Suggested-by: Ellie Reeves > Signed-off-by: Jerome Brunet Applied to v4.17/dt64 and Cc'd to stable, Kevin