On the gta04 with a dm3730 omap_hdq does not work properly when the device enters lower power states. Idling uart1 and 2 is enough to show up that problem, if there are no other things enabled. Further research reveals that hdq iclk must not be turned off during transfers, also according to the TRM. That fact is also correctly described in the flags but the code to handle that is incomplete. Since the order is first disable all autoidles, then disable selected and then enable all, we need to either change that order or add a usecount. Since it is done only in init, we could think about changing order. Andreas Kemnade (2): clk: ti: add a usecount for autoidle arm: mach-omap2: setup iclk autoidle according to flags arch/arm/mach-omap2/omap_hwmod.c | 8 ++++++-- drivers/clk/ti/autoidle.c | 20 ++++++++++++-------- include/linux/clk/ti.h | 1 + 3 files changed, 19 insertions(+), 10 deletions(-) -- 2.11.0
