Thread (14 messages) 14 messages, 4 authors, 2017-08-27

[RFC 1/3] dt-bindings: rtc: Add Realtek RTD1295

From: andrew@lunn.ch (Andrew Lunn)
Date: 2017-08-27 13:47:43
Also in: linux-devicetree, linux-rtc, lkml

Thanks. Did you read the RFC question in the cover letter as well and
have any comments? Downstream has an rtc-base-year = <2014>; property
that I had left out in this RFC and due to your ack not included in v2.

Should we default to 2014 in the driver and add an optional base-year
property once we encounter a diverging device, or should we make it
required from the beginning? I did not spot any other rtc binding with
such a property and would appreciate a clarification.
Hi Andreas
From the perspective of the hardware, does it care what the base is?
A device using a different base will initially return the wrong
time. But once the correct time has been written back, it will be O.K.

This only becomes an issue if a device is used with different OSs,
which have different bases. Swapping back and forth between OSs then
becomes an issue.

KISS suggests not having a base in DT until it is actually
required. Since it is an additional property, it does not break
backwards compatibility when added.

	  Andrew
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