[PATCH v2 0/8] pinctrl-rockchip: Change wrong initial assumptions
linus.walleij at linaro.org
Fri May 9 02:19:10 PDT 2014
On Mon, May 5, 2014 at 1:57 PM, Heiko Stübner <heiko at sntech.de> wrote:
> Initially due to lack of documentation and (personal) understanding
> I assumed that the area holding the iomux settings would be separate
> from everything else, while in fact the grf registers contain not only
> pinctrl stuff but also dma, usb-phy and general soc-status settings.
> Also things like drive-strength we do not support currently are intermixed.
> The same is true for the pmu, which does not only contain power domains
> but also the system reset as well as well as general registers surviving
> system-resets. Additionally the rk3188 moved parts of the pull-setting
> registers into the pmu space.
> While this wasn't a problem until now, the upcoming rk3288 introduces
> additional changes to both the grf and pmu areas. On it even part of
> the pinmux registers move into the pmu space.
> The code in it's current form supports both the old as well as the
> changed bindings.
> As stated in the v1 thread, this is also a first step to deprecate the
> wrongly included gpio-controllers which now duplicate the recently added
> gpio-dwapb, that should be used instead.
Patched 1 thru 7 applied to the pin control tree.
We knew this would be a bumpy ride when the merging started so this
is all expected.
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