From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfram Sang Subject: Re: [PATCH] drivers: i2c: i2c-st: Update i2c timings Date: Tue, 3 Jun 2014 09:59:22 +0200 Message-ID: <20140603075922.GB2653@katana> References: <1400254330-2547-1-git-send-email-maxime.coquelin@st.com> <20140602163103.GJ2654@katana> <538D7A1C.5040409@st.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NMuMz9nt05w80d4+" Return-path: Content-Disposition: inline In-Reply-To: <538D7A1C.5040409-qxv4g6HH51o@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Maxime Coquelin Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Srinivas Kandagatla , Patrice Chotard , kernel-F5mvAk5X5gdBDgjK7y7TUQ@public.gmane.org List-Id: linux-i2c@vger.kernel.org --NMuMz9nt05w80d4+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable > >Can you give names here? Would be interesting to know since a few > >drivers implement the minimum timings. >=20 > I don't have the name actually. > The request to implement this change came from hw guys. Can you ask? It feels better to have changes based on facts. > >>This patch adds a 10% margin on all the timings. > > > >Is there a safety margin or do the devices start to work exactly at 10%? >=20 > 10% is a safety margin, I don't know what is the limit. Which also came from the HW guys? Please ask for details why 10%, too. Thanks, Wolfram --NMuMz9nt05w80d4+ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJTjYBaAAoJEBQN5MwUoCm2Cb8P/2AtAJPoxu19keSL/rBew3/d D4FoYT+qUkfxfHW+WBEcR+Y+AaMnvJcLUBV0Vj2ek6RZSs1xQkTX2VYR3R8RK3K7 NesQzwz4oI9gvbUcj3+RnoiDFol+vCGCIQr/04BnI+Usj6Ryyu44A5tFNdwH3sH+ /6jQDaaxfCkxuBMZIYJkL/XRt06H/e4OAhaPtcT2zTR7LhgCP7QprZC+0Akb4ce/ e6YyaS854p/gr/e625C4k3Y6UcvXVW8JK9TAyWbT/kNfg3HQSK7tjLiTCdaoPocy jPvYX40VKrY5PvLzr7KTBAKiCYEQDewEqkbHKu4rMMgBZgJxvV/XXPasu1Kqfl1L nAjBX4JEQLVnGClRWdzGuRrYEqGAEhqonWi8UTcoOxblkpDL6+ZpXYPbPtFRv65z RxiTGY27Mla/lfYR0W5ZHZAnApWLvMApMWm3syRar2NNfICBo8+jJtBxDFXrLkQD aRNdcwXTQ1MZqGhSCB6x1VJPYw6HZddheUJXOOpUPrlaNvz6j/qay7td93QuYr7g kaHbN6KAJjYccSNpZDKNAQ74Z5U4jK3eDNJJ2zn2o7twYl+5czTFvFV2DgfZvtrz CA7fU91isnLpC2duyxiZu9XuxwpdnPLj+IXfw0jzD5/e8Il+RiJtdoYyH7xw1E5Q NLk/z3dt2tq90n8xs1xq =LKpl -----END PGP SIGNATURE----- --NMuMz9nt05w80d4+--