From mboxrd@z Thu Jan 1 00:00:00 1970 From: tony@atomide.com (Tony Lindgren) Date: Sun, 11 Dec 2011 11:36:25 -0800 Subject: [RFC 1/3] pinctrl: add a driver for NVIDIA Tegra In-Reply-To: References: <1323382390-14892-1-git-send-email-swarren@nvidia.com> <1323382390-14892-2-git-send-email-swarren@nvidia.com> <20111209170722.GO31337@atomide.com> Message-ID: <20111211193625.GE31337@atomide.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org * Linus Walleij [111209 15:17]: > On Fri, Dec 9, 2011 at 6:07 PM, Tony Lindgren wrote: > > > - We currently have hard time supporting pin groups with pins > > ?coming from multiple pinmux driver instances > > Pin groups are per definiton per-controller inctance. That is a > given side effect of not having a global pin space. > > But you can create two groups of the same name on two > pin controllers so that e.g. pinctrl.0 and pinctrl.1 have > a group named "foo", then map both to a certain device > in the board pinmux map. > > You will have to request them individually however, like > with two hogs or two pinmux_get() calls specifying the > name of each map, else you will just get the first one. > > Not that I've tried it, but that's how it's supposed to work... Yes a little bit of trickery is needed there, I'll look into it more as we already have two controller instances on omap4. Regards, Tony