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[46.91.239.54]) by smtp.gmail.com with ESMTPSA id y6sm4534133wmd.16.2019.06.20.01.47.14 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 20 Jun 2019 01:47:14 -0700 (PDT) Date: Thu, 20 Jun 2019 10:47:13 +0200 From: Thierry Reding To: Jon Hunter Cc: Laxman Dewangan , Vinod Koul , dmaengine@vger.kernel.org, linux-tegra@vger.kernel.org, Sameer Pujar Subject: Re: [PATCH] dmaengine: tegra210-adma: Don't program FIFO threshold Message-ID: <20190620084713.GA26689@ulmo> References: <20190620075424.14795-1-jonathanh@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="a8Wt8u1KmwUX3Y2C" Content-Disposition: inline In-Reply-To: <20190620075424.14795-1-jonathanh@nvidia.com> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org --a8Wt8u1KmwUX3Y2C Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jun 20, 2019 at 08:54:24AM +0100, Jon Hunter wrote: > From: Jonathan Hunter >=20 > The Tegra210 ADMA supports two modes for transferring data to a FIFO > which are ... >=20 > 1. Transfer data to/from the FIFO as soon as a single burst can be > transferred. > 2. Transfer data to/from the FIFO based upon FIFO thresholds, where > the FIFO threshold is specified in terms on multiple bursts. >=20 > Currently, the ADMA driver programs the FIFO threshold values in the > FIFO_CTRL register, but never enables the transfer mode that uses > these threshold values. Given that these have never been used so far, > simplify the ADMA driver by removing the programming of these threshold > values. >=20 > Signed-off-by: Jonathan Hunter > --- > drivers/dma/tegra210-adma.c | 12 ++---------- > 1 file changed, 2 insertions(+), 10 deletions(-) Acked-by: Thierry Reding --a8Wt8u1KmwUX3Y2C Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAl0LSAwACgkQ3SOs138+ s6FiOhAAu0+Kphi5/85mxAbW9vW4ealuleXGpCh6n/u6+yEX23t2UBjioPLCsr8F wfq+mVEfaM3mr7Ew7T6Gq9T0CdNTGvj1Ou/9vUMbHYpgaOgA7ut6jVywG6YP13Jd vmjmBmxiFRn2Cs0jFTIwyTOyBMZv5fccj1xQnMd6t8H5L8b3qkAvFwL0vxyjIdDe L3ZMRbcEwfF58pHzW6YuiLCuBGJbfUTmwaoDQ5lQ6wYJ3QoJCjWeEGHm8olOB6wB 8HeFyL6So6wNw+XL4qZKYa4DsLqCZa8B5vK+HueJPKyD6LPBLFEimv17/AN5HB0R fsFNumbmESGJD9+mJdMRjed3UeDAA/BXOIJz1DYTzOmTAR9jwUu0qQX8MRBHwpMS fFf2COh2/Eaf2Sek8jaRk6RYX9SloCI1dUdN2HBc6KDRKGmNx/oHWuVLfXYMaeeY STw9qtnWf2VeOEl7GLlzfIhjtoyWuqQbISom0mV6ok8a64QOTyxwVGe4JBIZdzz6 S3+2koUNvyeU2EjylFsloY2SH6Eu4Gnlv0eoAj+cAukQRYEPsVyNE7tZbsJXcjll PUEeLc44bXdLqUBsr7QunwTLa1dpVFiWfluXQlWpxdPmTV0ozL6fwPs+WO88dvbm EKGrvcYmYORUbvHCb5tiK0SsTcYrJQVtRXwNv+KqZGHGQxbrj4g= =ukxb -----END PGP SIGNATURE----- --a8Wt8u1KmwUX3Y2C--