* rtc: NXP pcf8563 vs Haoyu hym8563
@ 2014-10-27 14:42 Jan Kardell
2014-10-27 15:41 ` Heiko Stübner
0 siblings, 1 reply; 2+ messages in thread
From: Jan Kardell @ 2014-10-27 14:42 UTC (permalink / raw)
To: Alessandro Zummo, rtc-linux, linux-kernel, Heiko Stuebner
Cc: Vincent Donnefort, Dan Carpenter
Hi,
Erlier this year the hym8563 driver was added to the kernel. When I compared
the datasheets of the NXP pcf8563 (that I use) and the Haoyu hym8563 I
cannot
find any significantdifferences between the two chips. Now is using
different
drivers for the two similar (or identical?) chips:
a) A mistake
b) A feature
c) Me beeing stupid?
The difference between the drivers is handling of century and that the
hym8563
driver support the clock output that both chips have.
//Jan
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: rtc: NXP pcf8563 vs Haoyu hym8563
2014-10-27 14:42 rtc: NXP pcf8563 vs Haoyu hym8563 Jan Kardell
@ 2014-10-27 15:41 ` Heiko Stübner
0 siblings, 0 replies; 2+ messages in thread
From: Heiko Stübner @ 2014-10-27 15:41 UTC (permalink / raw)
To: Jan Kardell
Cc: Alessandro Zummo, rtc-linux, linux-kernel, Vincent Donnefort,
Dan Carpenter
Hi Jan,
Am Montag, 27. Oktober 2014, 15:42:11 schrieb Jan Kardell:
> Hi,
>
> Erlier this year the hym8563 driver was added to the kernel. When I compared
> the datasheets of the NXP pcf8563 (that I use) and the Haoyu hym8563 I
> cannot
> find any significantdifferences between the two chips. Now is using
> different
> drivers for the two similar (or identical?) chips:
> a) A mistake
> b) A feature
> c) Me beeing stupid?
option A - a mistake
At the time I didn't check existing drivers for one with a compatible
interface - wrongly thinking different vendors wouldn't use the same
interfaces.
I learned from this and am not making this mistake again [0] :-), but haven't
had the time so far to consolidate the two rtc drivers back into one.
> The difference between the drivers is handling of century and that the
> hym8563
> driver support the clock output that both chips have.
Feel free to consolidate them if you have time to spare - alternativly I
hopefully also will have time for this some time in the future.
Heiko
[0] https://lkml.org/lkml/2014/9/14/178
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