From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dirk Behme Date: Sat, 06 Apr 2013 18:48:24 +0200 Subject: [U-Boot] [PATCH 3/3] mx6sl: Add initial support for mx6slevk board In-Reply-To: References: <1365209739-5586-1-git-send-email-festevam@gmail.com> <1365209739-5586-3-git-send-email-festevam@gmail.com> <515FCE52.3070605@gmail.com> <51602891.9060406@gmail.com> <51604DAC.9010600@gmail.com> Message-ID: <516051D8.4040508@gmail.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de Am 06.04.2013 18:40, schrieb Fabio Estevam: > Hi Dirk, > > On Sat, Apr 6, 2013 at 1:30 PM, Dirk Behme wrote: > >> ... but saving power over the whole (kernel) runtime. I might be wrong, but >> to my understanding the kernel doesn't *disable* unneeded clocks? >> >> So it's up to the bootloader to enable only the peripherals (clocks) really >> needed for booting. And then it's up to the kernel's driver init functions >> to enable the needed clocks for the subsystem once it's needed. >> >> But as I won't use this board I won't care about the power consumption here. >> If you think it's fine for the use cases of this board to enable all clocks >> by default, then this shouldn't stop applying this patch. > > Ok, understood. I will go through each one of the CCM registers and > check what clocks can be turned off. > > This may take some time though as it needs proper testing. > > I suggest that we keep the current clock settings as is, so that the > board support can reach U-boot, then later I can submit a patch for > turning off the unneeded clocks. Sounds like a good plan :) Thanks Dirk P.S.: I would think that the clock settings of the other boards should be a good starting point to minimize the work. At least if the SoloLite clocks are not completely different ;)