Hi, Peter Ujfalusi <peter.ujfalusi@xxxxxx> writes: > Hi Paul, Tony, > > Changes since v2: > - DTS patch added which is needed because of the clock handling changes > > Felip Balbi reported that linux-next is broken right now since the DTS part of > the earlier series has been applied, but we do not have the mcasp hwmod in the > kernel: > ... > [ 0.181029] platform 48468000.mcasp: Cannot lookup hwmod 'mcasp3' > ... > [ 6.121072] davinci-mcasp 48468000.mcasp: _od_fail_runtime_resume: FIXME: missing hwmod/omap_dev info > [ 6.130790] ------------[ cut here ]------------ > [ 6.135643] WARNING: CPU: 0 PID: 244 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x220/0x34c() > [ 6.145576] 44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER2_P3 (Read): Data Access in User mode during Functional access > ... > > This is the followup series for the hwmod changes needed to get audio working > on DRA7xx family based boards. > The DTS patches has been applied by Tony from the original series: > http://www.spinics.net/lists/linux-omap/msg121473.html > > I have addressed your comments in the hwmod data and did some research also > regarding to the use of ahclkx as fclk in the original submission. > It turned out that McASP _needs_ all clocks to be enabled (fclk, iclk and > ahclkx/r) to be able to access registers. The original patch where we handled > the ahclkx as fclk worked, because the fclk clock got enabled in the HW w/o > any SW interaction. > All in all, the McASP found in DRA7 needs all clocks to be enabled. > To satisfy this I have introduced a new flag to hwmod, which means that the > listed optional clocks need to be handled alongside with the fclk clock. > > Regards, > Peter > --- > Peter Ujfalusi (3): > ARM: DTS: dra7: Fix McASP3 node regarding to clocks > ARM: OMAP2+: hwmod: Add hwmod flag for HWMOD_OPT_CLKS_NEEDED > ARM: OMAP: DRA7: hwmod: Add data for McASP3 I have tested these patches with today's HEAD + rtc 1307 fix. Boots fine and I can't see the splat I was seeing with beagle x15. Tested-by: Felipe Balbi <balbi@xxxxxx> logs: http://hastebin.com/ololizojat -- balbi
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