On 06/20/2013 03:08 PM, Anna-Maria Gleixner wrote:
> The nvidia,tristate entry for the pinmux of i2c1 an i2c3 was set to
> tristate. This results in non working i2c, because the i2c pins are
> not actively driven. Set the entries to "driven".
Lucas, can you please comment on this patch? It sounds correct to me,
but I would have assumed you'd tested I2C already when you wrote the
original DT?
Oh actually, now that I look further, I see that tegra20-iris-512.dts
includes this file, and overrides some of the tristate values there.
What's the thinking behind that, and does this patch fit into it?
> diff --git a/arch/arm/boot/dts/tegra20-colibri-512.dtsi
> nvidia,pins = "rm";
> nvidia,function = "i2c1";
> nvidia,pull = <0>;
> - nvidia,tristate = <1>;
> + nvidia,tristate = <0>;
> };
> i2c3 {
> nvidia,pins = "dtf";
> nvidia,function = "i2c3";
> nvidia,pull = <0>;
> - nvidia,tristate = <1>;
> + nvidia,tristate = <0>;
> };
> i2cddc {
> nvidia,pins = "ddc";
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