Hi Sudeep, On Wed, Dec 10, 2014 at 9:44 AM, Sudeep Holla <sudeep.holla@xxxxxxx> wrote: > Hi Abhilash, > > On Wednesday 10 December 2014 09:31 AM, Abhilash Kesavan wrote: >> >> Hi, >> >> On Fri, Nov 28, 2014 at 8:20 PM, Abhilash Kesavan <a.kesavan@xxxxxxxxxxx> >> wrote: >>> >>> The arm-cci driver completes the probe sequence even if the cci node is >>> marked as disabled. Add a check in the driver to honour the cci status >>> in the device tree. >>> >>> Signed-off-by: Abhilash Kesavan <a.kesavan@xxxxxxxxxxx> >> >> >> This patch helps disable CCI on the Arndale Octa board thus resolving >> some imprecise aborts seen on that board. Kindly review. >> >> Regards, >> Abhilash >>> >>> --- >>> drivers/bus/arm-cci.c | 3 +++ >>> 1 file changed, 3 insertions(+) >>> >>> diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c >>> index 860da40..0ce5e2d 100644 >>> --- a/drivers/bus/arm-cci.c >>> +++ b/drivers/bus/arm-cci.c >>> @@ -1312,6 +1312,9 @@ static int cci_probe(void) >>> if (!np) >>> return -ENODEV; >>> >>> + if (!of_device_is_available(np)) >>> + return -ENODEV; >>> + > > > IIUC, by this change you are disabling the MCPM boot protocol here. > Is there any alternative boot protocol that works on this platform > to boot all 8 cores ? Sorry by quick grep couldn't find one, hence > so I am asking. Thanks for the reply. On disabling MCPM, we will default to platsmp.c/firmware.c which boots 4 cores as per Kevin's comment here[1]. This was the original behavior before MCPM was enabled for all 5420 based SoCs. Regards, Abhilash [1] http://www.spinics.net/lists/arm-kernel/msg381191.html > > Regards, > Sudeep > -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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