Messages in this thread | | | From | Heiko Stübner <> | Subject | Re: [PATCH] pinctrl: establish pull-up/pull-down terminology | Date | Mon, 24 Jun 2013 14:39:05 +0200 |
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Am Montag, 24. Juni 2013, 14:24:12 schrieb Linus Walleij: > On Sat, Jun 22, 2013 at 1:39 AM, Heiko Stübner <heiko@sntech.de> wrote: > > Am Samstag, 22. Juni 2013, 01:30:18 schrieb Laurent Pinchart: > >> [Stephen] > >> > >> > IIRC the idea of the PULL_PIN_DEFAULT was to avoid having to specify > >> > UP/DOWN for each pin/group, but could just say "default", which would > >> > then reduce the number of pinctrl mapping table entries or pinctrl DT > >> > property entries. > >> > >> I may be mistaken, but I've understood the PULL_PIN_DEFAULT option as a > >> way to select the default bias configuration when the default value is > >> hardware- controlled, not as a pure software option. > > > > Yep that was the original intent ... to handle hardware that hides the > > complete logic from the software and you only get to turn it on or off, > > while the direction and other params are determined internally for > > example by the pin function. > > Heiko, can you send a documentation patch to clarify this so we > don't get any misunderstandings? > > Maybe it'd be useful for software purposes as well, but let's save > that for when it gets used like that.
will try to get this (and the changes from the other mail) done today
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