Hello all, For omap4, I wonder how should emif be handled when suspending the entire SoC.
In playing with Robert Nelson's 4.2 kernel tree [1], I noticed that the suspend seems broken: the kernel, in the suspend_noirq phase, tries to disable the emif hwmod by calling omap_device_idle(); the board thus hangs. It appears to me that the DDR shouldn't be disabled at this moment or it needs special treatment -- in comparison, the AM35xx kernel switches its execution to on-chip SRAM before turning off the emif. I tried to examine earlier kernels (3.2, 3.4) for omap4 to see how emif is power-managed. However I didn't see much useful information. Any help is appreciated. 1. https://eewiki.net/display/linuxonarm/PandaBoard Best, Renju -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
