From: Michael Ellerman <mpe@ellerman.id.au>
To: Vaibhav Jain <vaibhav@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org, benh@kernel.crashing.org
Cc: Neelesh Gupta <neelegup@linux.vnet.ibm.com>,
Cyril Bur <cyrilbur@gmail.com>,
Vaibhav Jain <vaibhav@linux.vnet.ibm.com>
Subject: Re: [v3] powerpc/configs: enable RTC class support
Date: Wed, 17 Jun 2015 15:43:15 +1000 (AEST) [thread overview]
Message-ID: <20150617054315.9BABF140290@ozlabs.org> (raw)
In-Reply-To: <1433155735-23751-1-git-send-email-vaibhav@linux.vnet.ibm.com>
On Mon, 2015-01-06 at 10:48:55 UTC, Vaibhav Jain wrote:
> A working rtc kernel driver is needed so that hwclock can synchronize
> system clock to rtc during shutdown/boot. We already have a rtc platform
> driver for power arch located at drivers/rtc/rtc-opal.c However it
> depends on CONFIG_RTC_CLASS which is disabled by default. So this driver
> is not compiled with pseries defconfig as rtc class support is missing
> from the kernel.
>
> We fix this by enabling rtc class support in pseries defconfig so that
> this driver gets enabled and is compiled into the pseries kernel.
So that seems fair enough.
But, it disables CONFIG_GEN_RTC. Which *I think* means we won't get an RTC
driver at all on pseries machines.
There's some history between those two options but I don't know it off the top
of my head. Ben should know?
cheers
next prev parent reply other threads:[~2015-06-17 5:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-01 10:48 [PATCH v3] powerpc/configs: enable RTC class support Vaibhav Jain
2015-06-17 5:43 ` Michael Ellerman [this message]
2015-06-24 7:45 ` [v3] " Vaibhav
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