From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@free-electrons.com (Maxime Ripard) Date: Wed, 25 Jan 2017 10:10:34 +0100 Subject: [PATCH v3 3/13] mmc: sunxi: Always set signal delay to 0 for A64 In-Reply-To: References: <67fd7dad745b49bb8edb7391655eaddf6f35160e.1484585798.git-series.maxime.ripard@free-electrons.com> Message-ID: <20170125091034.2cwnq7g72fndhuqz@lukather> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Ulf, On Tue, Jan 24, 2017 at 09:16:12AM +0100, Ulf Hansson wrote: > On 16 January 2017 at 17:56, Maxime Ripard > wrote: > > Experience have shown that the using the autocalibration could severely > > degrade the performances of the MMC bus. > > > > Allwinner is using in its BSP a delay set to 0 for all the modes but HS400. > > Remove the calibration code for now, and add comments to document our > > findings. > > So doesn't this break some platforms using HS400? Or are you saying > those are already broken? Like Andre said, HS400 isn't supported at all, so there's no regression or brokenness involved :) Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 801 bytes Desc: not available URL: