From mboxrd@z Thu Jan 1 00:00:00 1970 From: linux@rempel-privat.de (Oleksij Rempel) Date: Fri, 07 Nov 2014 09:35:56 +0100 Subject: preferable method for pinctrl driver In-Reply-To: References: <54379C10.3050004@rempel-privat.de> Message-ID: <545C846C.6090502@rempel-privat.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Am 13.10.2014 um 11:05 schrieb Linus Walleij: > On Fri, Oct 10, 2014 at 10:42 AM, Oleksij Rempel wrote: > >> Looks like there is at least two pinctrl driver types: >> - imx23 which makes function description insight of DT; >> - tegra with function descrption in the source code. >> which way is preferable? > > The Tegra way. The driver should know about all groups > and functions, the DT should just configure the functions to > groups relation. > > The i.MX driver happened before the DT use for pin controllers > was thought through. > >> Other question, i didn't found exact same HW, do it make sense to merge >> this driver with existing one? Are there some similarities with this one?: >> http://pastebin.com/hW82Xupq > > No idea, that's very little HW information. However > silicon vendors often du their I/O cell layout themselves > so many pin controllers are very unique. > > Yours, > Linus Walleij Hi, thank you for your previous response. One more question: how pins should be numbered? Continuous or register offsets can be used? Documentations for this soc use pin names encoded like this #NAME_#BANK_#PIN. Register offset can be calculated by ((bank) * 32 + (pin) * 4) In this case i need to have extra array to convert pin number to offset, or use offset as pin number. -- Regards, Oleksij -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 213 bytes Desc: OpenPGP digital signature URL: