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    SubjectRE: [PATCH 06/10] arm/tegra: prepare pinmux code for multiple tegra variants
    Peter De Schrijver wrote at Monday, November 21, 2011 7:29 AM:
    > On Fri, Nov 18, 2011 at 10:41:16PM +0100, Olof Johansson wrote:
    > > On Thu, Nov 17, 2011 at 06:19:20PM +0200, Peter De Schrijver wrote:
    > > > This patch modifies the pinmux code to be useable for multiple tegra variants.
    > > > Some tegra20 specific constants will be replaced by variables which will be
    > > > initialized to the appropriate value at runtime.
    > > > diff --git a/arch/arm/mach-tegra/board-harmony-pcie.c b/arch/arm/mach-tegra/board-harmony-pcie.c
    > > > +#include <mach/pinmux-tegra20.h>
    > >
    > > Boards shouldn't have to include this. The idea is that you should only
    > > have to do board code against the pinmux.h interface, which internally
    > > abstracts it for tegra 20 vs tegra 30.
    > The pinmux naming is still SoC specific. Unless we move this to devicetree
    > (which should be part of a different patchset), I don't see how we can solve
    > this, except by renaming all the pingroups. That would cause a lot more
    > changes though.

    I believe that Peter's explanation makes sense.

    BTW, re: the new pinmux API: I have a driver for both Tegra20 and Tegra30
    now which should work for muxing. All the data is present for all the pin
    configs too (tri-state, pull, ...) but we need to define the core pinctrl
    API for this before I can expose that. Similarly, we need DT bindings for
    all of this before we can make use of it; something I hope to start work
    on in the near future.


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