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[46.91.239.54]) by smtp.gmail.com with ESMTPSA id n1sm2569668wmc.19.2019.05.09.07.22.39 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 09 May 2019 07:22:40 -0700 (PDT) Date: Thu, 9 May 2019 16:22:39 +0200 From: Thierry Reding To: Manikanta Maddireddy Cc: bhelgaas@google.com, robh+dt@kernel.org, mark.rutland@arm.com, jonathanh@nvidia.com, lorenzo.pieralisi@arm.com, vidyas@nvidia.com, linux-tegra@vger.kernel.org, linux-pci@vger.kernel.org, devicetree@vger.kernel.org Subject: Re: [PATCH V2 15/28] PCI: tegra: Update flow control timer frequency in Tegra210 Message-ID: <20190509142239.GL8907@ulmo> References: <20190423092825.759-1-mmaddireddy@nvidia.com> <20190423092825.759-16-mmaddireddy@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Pz0BBB9QxoYXlT+x" Content-Disposition: inline In-Reply-To: <20190423092825.759-16-mmaddireddy@nvidia.com> User-Agent: Mutt/1.11.4 (2019-03-13) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org --Pz0BBB9QxoYXlT+x Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Apr 23, 2019 at 02:58:12PM +0530, Manikanta Maddireddy wrote: > Recommended UpdateFC threshold in Tegra210 is 0x60 for best performance > of x1 link. Setting this to 0x60 provides the best balance between number > of UpdateFC packets and read data sent over the link. >=20 > UpdateFC timer frequency is equal to twice the value of register content > in nsec, i.e (2 * 0x60) =3D 192 nsec. >=20 > Signed-off-by: Manikanta Maddireddy > --- > V2: Changed update_fc_val to update_fc_threshold >=20 > drivers/pci/controller/pci-tegra.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) Acked-by: Thierry Reding --Pz0BBB9QxoYXlT+x Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCAAdFiEEiOrDCAFJzPfAjcif3SOs138+s6EFAlzUN68ACgkQ3SOs138+ s6EUIQ//fPLO3+kOgp+cWleSpS5tQI/b3oSJYHWpm4WDf+3W00jaAOngR/nppT+R xZrL/NENwycIe9ShA3Fh1lOPKnYtTWEfjHj1lsWFMVvKqOykPQCpuQV74G2/BCF3 rSv67tehrwMAgndniHosmKcmu1Pw0gYMITujiodA4J7R9OIkgYsaCb00gNujYfHl noT6w9b/s38NcSv1E8k4EvTd44YFfyWt1xrOW9QSuAFrqsKD79fFgwQmPr11e6P0 IYLM9ylf0S6Pm5q9WML1CELnThLbuFUwr0UfjlSoLu6siDfD/JC0rTj7m+EIgEYT nh2Nb1QL8EsDIOLzxSq9h7ZdzQxnyGmGKpm4o1jGkacyjR4np90h8wJSeOZnBx31 +Yo54EFeEUvfwZxbVCz8C8+IP/AbBLqEhKAp+0ES6vH0RDO42KepGQUcalv22Akr 0ret0Bw5TCYw4kTPEsuDy5f0lziu4zqMICz+sATbzn9ptLqaP2KPLII2jEWUglPb ws5w3+OOvsAGAU160egM4X6cpToY0x0wulj1gguXysASERKwMQ5Q+xZpUWXWVr32 1MiEUEvDPB41hQeqyHmvnMSVu8PfgzyjudOtHR4hzsH5zqXvD82mKVh12bIDBiob lqtVwu2VdMRm8BBw8tSB+xH25dlRD7xKJD8YVksWMyPElMWFnh4= =8+ux -----END PGP SIGNATURE----- --Pz0BBB9QxoYXlT+x--