On Fri, Feb 10, 2017 at 11:11:54AM -0700, H Hartley Sweeten wrote:
Currently the ts78xx platform does some "probing" of the rtc NVRAM to see
if it is actually present before registering the rtc device. This "probing"
just checks if the NVRAM is present by reading/writing the last two bytes
of the NVRAM. I'm not sure if this is really necessary. If it can be removed
all the m48t86_ops stuff could also be removed from this driver, along with
platform_data/rtc-m48t86.h.
The RTC is an optional upgrade on the TS-7800[1]. Not sure what would happen
if the RTC driver kicks in with no actual RTC being present?
If I was to do this over again, I probably would have the driver check that the
HMS is actually incrementing after being instantiated, if it looks weird then
to unbind its-self.
My TS-7800 is still clunking away in the corner though on an aging 2.6.32
kernel. I keep meaning to update it, might be some time before I can though.
Cheers
[1] https://www.embeddedarm.com/products/TS-7800 - 'Order' tab
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