From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin Hilman Subject: Re: [PATCH 00/18] mmc: meson-gx: code and performance improvements Date: Wed, 15 Feb 2017 11:49:57 -0800 Message-ID: References: <74c3a06c-d972-1e70-fb22-744df8ef31d9@gmail.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from mail-pg0-f43.google.com ([74.125.83.43]:36237 "EHLO mail-pg0-f43.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751067AbdBOTt7 (ORCPT ); Wed, 15 Feb 2017 14:49:59 -0500 Received: by mail-pg0-f43.google.com with SMTP id v184so39314540pgv.3 for ; Wed, 15 Feb 2017 11:49:59 -0800 (PST) In-Reply-To: <74c3a06c-d972-1e70-fb22-744df8ef31d9@gmail.com> (Heiner Kallweit's message of "Tue, 14 Feb 2017 21:05:16 +0100") Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Heiner Kallweit Cc: Ulf Hansson , Carlo Caione , "linux-mmc@vger.kernel.org" , linux-amlogic@lists.infradead.org Hi Heiner, Heiner Kallweit writes: > This patch series includes several improvements and boosted the > read performance from 13 MB/s to 32 MB/s (at 60MHz clock rate) > on a Odroid C2 with a 128GB eMMC module. > > Higher frequencies needed tuning in my case. With some hacked > test tuning I reached 52 MB/s at 200MHz. > With a 8GB card 200MHz were stable out of the box, but with > less performacne. Thanks for the series and improvements. I'm not very familiar with MMC, so I've been hoping someone would come along and improve this driver. I really appreciate it. There are a few comments I've made on individual patches in the series. It will probably be helpful to the MMC maintainers if you separate the series into: - cleanups (non-functional changes) - fixes: things that fix actual bugs (not sure there are any in this series) followed by a series that does the functional changes. Also, can I recommend that you use git-format-patch and git-send-email to export and email your patches? If you use git-send-email, all of the individual patches will be sent as a reply to the cover-letter, making the threading work better and generally make readers/reviewers happier. Thanks again for the great work, Kevin > Heiner Kallweit (18): > mmc: meson-gx: set segment host parameters > mmc: meson-gx: remove code for unsupported CMD23 > mmc: meson-gx: explicitely call stop command for multi-block commands only > mmc: meson-gx: improve meson_mmc_start_cmd > mmc: meson-gx: eliminate struct sd_emmc_data > mmc: meson-gx: simplify bounce buffer setting in meson_mmc_start_cmd > mmc: meson-gx: check return value of sg_copy_[from,to]_buffer > mmc: meson-gx: make two functions return void > mmc: meson-gx: change interrupt name > mmc: meson-gx: remove unused members irq, ocr_mask from struct meson_host > mmc: meson-gx: remove unneeded variable in meson_mmc_clk_init > mmc: meson-gx: remove member parent_mux from struct meson_host > mmc: meson-gx: remove unneeded meson_mmc_clk_set in meson_mmc_clk_init > mmc: meson-gx: remove unneeded devm_kstrdup in meson_mmc_clk_init > mmc: meson-gx: improve initial configuration > mmc: meson-gx: improve response reading and sending stop command > mmc: meson-gx: remove member mrq from struct meson_host > mmc: meson-gx: move handling of one case from threaded handler to main irq > > drivers/mmc/host/meson-gx-mmc.c | 241 ++++++++++++++++------------------------ > 1 file changed, 97 insertions(+), 144 deletions(-)