From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Ripard Subject: Re: [PATCH 0/3] Simple DVFS support for Allwinner A64 SoC Date: Thu, 28 Sep 2017 12:28:30 +0200 Message-ID: <20170928102830.uuicirbjb5q64vwz@flea> References: <20170923001531.14285-1-icenowy@aosc.io> <20170925101027.lghnnll4h6inreqm@flea.home> <27EF78BD-6285-4D8D-AA65-8294D797E2FB@aosc.io> <20170925102744.qixfwlheeimemhcf@flea.home> <9b3aeb6cb155bb2f9a7cee438de82ccb@aosc.io> Reply-To: maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="okv7m74fz5ndo6kz" Return-path: Sender: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org Content-Disposition: inline In-Reply-To: <9b3aeb6cb155bb2f9a7cee438de82ccb-h8G6r0blFSE@public.gmane.org> List-Post: , List-Help: , List-Archive: , List-Unsubscribe: , To: icenowy-h8G6r0blFSE@public.gmane.org Cc: Chen-Yu Tsai , linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-clk-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org List-Id: devicetree@vger.kernel.org --okv7m74fz5ndo6kz Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Wed, Sep 27, 2017 at 11:51:30AM +0000, icenowy-h8G6r0blFSE@public.gmane.org wrote: > =E5=9C=A8 2017-09-25 18:27=EF=BC=8CMaxime Ripard =E5=86=99=E9=81=93=EF=BC= =9A > > On Mon, Sep 25, 2017 at 10:12:09AM +0000, Icenowy Zheng wrote: > > > =E4=BA=8E 2017=E5=B9=B49=E6=9C=8825=E6=97=A5 GMT+08:00 =E4=B8=8B=E5= =8D=886:10:27, Maxime Ripard > > > =E5=86=99=E5=88=B0: > > > >Hi, > > > > > > > >On Sat, Sep 23, 2017 at 12:15:28AM +0000, Icenowy Zheng wrote: > > > >> This patchset imports simple DVFS support for Allwinner A64 SoC. > > > >> > > > >> As the thermal sensor driver is not yet implemented and some board= s > > > >> have still no AXP PMIC support, now only two OPPs are present -- > > > >> 648MHz@1.04V and 816MHz@1.1V to prevent overheat or undervoltage. > > > >> > > > >> PATCH 1 is a fix to the CCU driver of A64, and the remaining patch= es > > > >> set up the device tree bits of the DVFS on Pine64. > > > > > > > >How has this been tested? > > > > > > > >What tasks did you run, with what governor, etc... > > >=20 > > > I only tested manual frequency switching between 648MHz and > > > 816MHz, and tested the PLL stuck issue by change the OPPs to > > > some random value. > >=20 > > Ideally, we should test that it's actually reliable. Poorly chosen > > OPPs might lead to corrupt data that you might not get before a while. > >=20 > > Please test using: > > https://linux-sunxi.org/Hardware_Reliability_Tests#Reliability_of_cpufr= eq_voltage.2Ffrequency_settings > >=20 > > And post the report. >=20 > ``` > root@p64 [ cpuburn-arm@master ] # ./cpuburn-a53 & > [1] 2543 > root@p64 [ cpuburn-arm@master ] # ./cpufreq-ljt-stress-test > Creating './whitenoise-1920x1080.jpg' ... done > CPU stress test, which is doing JPEG decoding by libjpeg-turbo > at different cpufreq operating points. >=20 > Testing CPU 0 > 816 MHz ............................................................ OK > 648 MHz ............................................................ OK >=20 > Testing CPU 1 > 816 MHz ............................................................ OK > 648 MHz ............................................................ OK >=20 > Testing CPU 2 > 816 MHz ............................................................ OK > 648 MHz ............................................................ OK >=20 > Testing CPU 3 > 816 MHz ............................................................ OK > 648 MHz ............................................................ OK >=20 > Overall result : PASSED > ``` Great, thanks! Can you put that in your cover letter for the next version? Maxime --=20 Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com --=20 You received this message because you are subscribed to the Google Groups "= linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to linux-sunxi+unsubscribe-/JYPxA39Uh5TLH3MbocFF+G/Ez6ZCGd0@public.gmane.org For more options, visit https://groups.google.com/d/optout. --okv7m74fz5ndo6kz Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIbBAEBAgAGBQJZzM7OAAoJEBx+YmzsjxAgVioP9R+3YZc4vlF8S5n8Mftfir0Z IDXLvnxTW6Wc2m6YY6PnjCqFgoYvtfeDYYbAkAVECi7gQFAEcmquPXO5l9tRzDsF PzKKfY5r2R4GgaESqFGGaj1RHQNwWYIp5ZypZUgrxE0dMnVSLht41dLIFD73dx41 J4yGlVJVWjpp2dfvGFkNZfj02nwtHv5K9h3HXYPWVABcfetiVBSINm7+YaoaBI/H oIsjTxKwarpOjERf8F9WXv5Fp0mePyGJ4LDUaMbV3j+LaP6n+4M2UhmZvCX1LNry 4ZgFwO1/3NJkZBVCI4vwyAU5GAWZOOn9gQPStYnRQfYWV3fRBqRNIhdUBDFnJ8Hp wdpO81NBvd2WJa1JFJNr6LE6c7bNbJl+EROPuzYuOY9SVufgKmWGiG5iXupT0Gp8 03z0FMUCIR7azfaqOeG/X9ZsA8Tt3j+SNun3wdSF6b9jK4rzzFXP4XMR7EZHu/TC m+d6oJZpH3y0/khObn+mFU6098jRZudvZyhbnqp5fLMcrOPknAiEXY1z7/JCnuyr pklia5U2aIGxABdI7ixCkztUQ6FX2MbHzGXh7L14s07GSInRQJVdyGZ1IYcMC3Do rNL7KQF0jKeg+jSjuGNKGWNwKr1iDf7iEsXhm5ycEp6RG+dMnBlrXC25QUqt7yNb Les3DYaZz7LpmkXguFU= =9FAH -----END PGP SIGNATURE----- --okv7m74fz5ndo6kz--