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SubjectRe: [PATCH 4/6] ARM: dts: stm32: add MFX support on I2C1 on stm32746g-eval
On Thu, Feb 8, 2018 at 3:27 PM, Amelie Delaunay <amelie.delaunay@st.com> wrote:

> MFX is used as gpio expander on stm32746g-eval.
>
> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com>

(...)
> + mfx: mfx@42 {
> + compatible = "st,mfx";
> + reg = <0x42>;
> + interrupts = <8 1>;
> + interrupt-parent = <&gpioi>;
> + interrupt-controller;
> + #interrupt-cells = <1>;
> +
> + mfxgpio: mfx_gpio {
> + compatible = "st,mfx-gpio";
> + interrupts = <0>;
> + interrupt-parent = <&mfx>;
> + gpio-controller;
> + #gpio-cells = <2>;

So I think this node should contain some pin config states
that can be referenced by the drivers to set up push/pull
etc. Probably it can use just standard pin config properties
like sx150x.

Yours,
Linus Walleij

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