From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Kleine-Budde Subject: Re: [PATCH] flexcan: disable bus error interrupts for the i.MX28 Date: Mon, 08 Oct 2012 11:31:31 +0200 Message-ID: <50729D73.3050409@pengutronix.de> References: <5065A35B.3020702@grandegger.com> <20121007030858.GJ20231@S2101-09.ap.freescale.net> <50719647.4070404@grandegger.com> <7FE21149F4667147B645348EC60578850B2A361F@039-SN2MPN1-011.039d.mgd.msft.net> <507296F2.9010402@grandegger.com> <7FE21149F4667147B645348EC60578850B2A8D51@039-SN2MPN1-011.039d.mgd.msft.net> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enigB48DB519EAE3FF48644B1601" Return-path: Received: from metis.ext.pengutronix.de ([92.198.50.35]:36070 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750709Ab2JHJbj (ORCPT ); Mon, 8 Oct 2012 05:31:39 -0400 In-Reply-To: <7FE21149F4667147B645348EC60578850B2A8D51@039-SN2MPN1-011.039d.mgd.msft.net> Sender: linux-can-owner@vger.kernel.org List-ID: To: Dong Aisheng-B29396 Cc: Wolfgang Grandegger , Shawn Guo , Linux Netdev List , Linux-CAN , Hui Wang This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enigB48DB519EAE3FF48644B1601 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 10/08/2012 11:13 AM, Dong Aisheng-B29396 wrote: >>> I just checked our ic guy of flexcan, it seems he also had no sense o= f >> this issue. >>> >>> Below is some version info what I got: >>> Mx6s use FlexCAN3, with IP version 10.00.12.00 >>> Mx53 use FlexCAN2 (with glitch filter), with IP version 03.00.00.00 >>> Mx28 use FlexCAN2 (with glitch filter), with IP version 03.00.04.00 >>> Mx35 use FlexCAN2 (without glitch filter) , with IP version >>> 03.00.00.00 >>> Mx25 use FlexCAN2 (without glitch filter), with IP version 03.00.00.0= 0 >>> I'm not sure if mx6q has such issue. >> >> OK, we need to find that out experimentally. >> > Our IC owner double checked the MX35 and MX53 IP and found the RX_WARN = & TX_WARN > Interrupt source actually are not connected to ARM. Does this mean it's a SoC problem, not a problem of the ip core? > That means flexcan will not trigger interrupt to ARM core even RX_WARN = or TX_WARN > Happens. > This may be the root cause that why you cannot see RX_WARN interrupt if= not enable > bus error interrupt on mx35. > He also checked that mx6q has the rx/tx warning interrupt connected to = arm. > So we guess mx6q does not have this issue. > Anyway, we can test to confirm. What about mx25? Marc --=20 Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de | --------------enigB48DB519EAE3FF48644B1601 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iEYEARECAAYFAlBynXMACgkQjTAFq1RaXHNrQQCfbozsaobAnfC5Zxet0ND1gqjo K/wAniKbSZe3pfz2Wrlcddpv3PrM9Hil =aTCj -----END PGP SIGNATURE----- --------------enigB48DB519EAE3FF48644B1601--