On Sat, Apr 6, 2013 at 10:52 AM, Dirk Behme <dirk.be...@gmail.com> wrote:
> Most probably it would be sufficient to enable only the clocks needed for > booting ;) And not all clocks. On the other boards we do > > /* set the default clock gate to save power */ > DATA 4 0x020c4068 0x00C03F3F > DATA 4 0x020c406c 0x0030FC03 > DATA 4 0x020c4070 0x0FFFC000 > DATA 4 0x020c4074 0x3FF00000 > DATA 4 0x020c4078 0x00FFF300 > DATA 4 0x020c407c 0x0F0000C3 > DATA 4 0x020c4080 0x000003FF > > http://git.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=blob;f=board/freescale/imx/ddr/mx6q_4x_mt41j128.cfg;h=f4cae5eeb9899ab4ba937ae286e004d6861f1d43;hb=refs/heads/master#l161 > > Do you like to try anything similar here, too? No, sorry. It is possible to turn some clocks off, for sure, but I do not see real benefit by doing this on this solo-lite board. U-boot runs only for few seconds (or ms), so not much of power savings we can do in the bootloader. I am just setting the clocks to the default states, so it is up to the kernel to manage the clocks as needed. And I don't want to face the risk to turn some clocks off and then realize later that the kernel was expecting a clock to be on and start seeing weird run-time issues. _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot