I am trying to compile a linux-omap kernel for n810 that can do good idle power management. However, this seems to be harder than I expected. I've done all following measurements with /sys/power/sleep_while_idle set to 1. Compiler is arm-linux-gnueabi-gcc 4.2. I use n8x0_defconfig. * Maemo kernel (2.6.21) consumes ~0mA@xxxx when idle. This seems to be perfect. However, it has no pm regarding serial port. Whenever serial port is enabled, idle power is ~50mA@xxxxx * I've compiled 2.6.28/2.6.29 from l-o git. Serial port pm works fine. However the idle power is ~20mA@xxxxx That is quite strange. * For kernel >= 2.6.30 I didn't manage to boot my N810. I also dig out a thread discussing about N8x0 idle power: http://www.mail-archive.com/linux-omap@xxxxxxxxxxxxxxx/msg11954.html where Kalle mentioned 2.6.29 idle power is OK. But I never get the same result. I'm wondering if I did something wrong in the measurement. Anybody did the same thing? You suggestion is highly appreciated. Thanks, -Felix -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
