[PATCH v3 3/13] mmc: sunxi: Always set signal delay to 0 for A64
From: Maxime Ripard <hidden>
Date: 2017-01-25 09:10:49
Also in:
linux-devicetree, linux-mmc, lkml
Hi Ulf, On Tue, Jan 24, 2017 at 09:16:12AM +0100, Ulf Hansson wrote:
On 16 January 2017 at 17:56, Maxime Ripard [off-list ref] wrote:quoted
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: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20170125/716c21c2/attachment.sig>