From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752518AbbIKL2m (ORCPT ); Fri, 11 Sep 2015 07:28:42 -0400 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:59893 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751584AbbIKL2k (ORCPT ); Fri, 11 Sep 2015 07:28:40 -0400 Date: Fri, 11 Sep 2015 12:28:07 +0100 From: Mark Brown To: Shawn Lin Cc: Vinod Koul , Heiko Stuebner , Jaroslav Kysela , Takashi Iwai , Doug Anderson , Olof Johansson , Sonny Rao , Addy Ke , dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, alsa-devel@alsa-project.org, linux-spi@vger.kernel.org, Olof Johansson Message-ID: <20150911112807.GH12027@sirena.org.uk> References: <1441501881-13700-1-git-send-email-shawn.lin@rock-chips.com> <1441501986-14034-1-git-send-email-shawn.lin@rock-chips.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="fgOXmB9TvEybD/N/" Content-Disposition: inline In-Reply-To: <1441501986-14034-1-git-send-email-shawn.lin@rock-chips.com> X-Cookie: You are fairminded, just and loving. User-Agent: Mutt/1.5.23 (2014-03-12) X-SA-Exim-Connect-IP: 146.200.61.82 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH v4 08/10] spi: rockchip: modify DMA max burst to 1 X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: Yes (on mezzanine.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --fgOXmB9TvEybD/N/ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Sep 06, 2015 at 09:13:06AM +0800, Shawn Lin wrote: > From: Addy Ke >=20 > Generic dma controller on Rockchips' platform cannot support > DMAFLUSHP instruction which make dma to flush the req of non-aligned > or non-multiple of what we need. That will cause an unrecoverable > dma bus error. The saftest way is to set dma max burst to 1. Acked-by: Mark Brown --fgOXmB9TvEybD/N/ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJV8rrGAAoJECTWi3JdVIfQcNsH+wbzxE+Bh7KVYNw+UC54OdVj ytn/OyUAf3T4DcZQqe0J9m3eMIMLpxh01v2filrIJNGnv0q5R2uYgcpu7MDWChmw 3YA3iTMzFsp+HLtc473bqVgbh/BXN07Rh1XvbI5s8O7OjVIkTz9N5sTabuGV+TDh qQWxAdxXpNFCV0FxZ3mbwR5lcoSK8xAAewEbJCuQ+Y8+5EcSFqao8es/fAgjuR+U NA0UUVBVTxj2OYl+pt11lxnKM8IafH3XPN8Rlw/4jY7qIz/pUJePpU3VBPlt/UY7 uB0bYNJJg/26Q96Eb2x32IM+OjTsHyGissV1v7hHkG/MxP7ycpI25d0hQ7cmUsE= =sgF9 -----END PGP SIGNATURE----- --fgOXmB9TvEybD/N/--