On 4/7/21 1:53 AM, Andy Shevchenko wrote: > On Tue, Apr 6, 2021 at 5:56 PM Henning Schild > <henning.schild@xxxxxxxxxxx> wrote: >> >> Am Thu, 1 Apr 2021 18:15:41 +0200 >> schrieb "Enrico Weigelt, metux IT consult" <lkml@xxxxxxxxx>: >> >>> On 29.03.21 19:49, Henning Schild wrote: >>> >>> Hi, >>> >>>> This driver adds initial support for several devices from Siemens. >>>> It is based on a platform driver introduced in an earlier commit. >>> >>> Where does the wdt actually come from ? >>> >>> Is it in the SoC ? (which SoC exactly). SoC-builtin wdt is a pretty >>> usual case. >>> >>> Or some external chip ? >> >> I guess external chip, but again we are talking about multiple >> machines. And the manuals i read so far do not go into that sort of >> detail. In fact on some of the machines you will have two watchdogs, >> one from the SoC and that "special" one. >> That has several reasons, probably not too important here. The HW guys >> are adding another wd not just for fun, and it would be nice to have a >> driver. >> >>> The code smells a bit like two entirely different wdt's that just have >>> some similarities. If that's the case, I'd rather split it into two >>> separate drivers and let the parent driver (board file) instantiate >>> the correct one. >> >> Yes, it is two. Just like for the LEDs. One version PIO-based another >> version gpio/p2sb/mmio based. > > I tend to agree with Enrico that this should be two separate drivers. > Agreed. Guenter >> In fact the latter should very likely be based on that gpio pinctl, >> whether it really needs to be a separate driver will have to be seen. >> There are probably pros and cons for both options. > >
