[PATCH v3 07/10] arm/tegra: Add PWFM controller device tree probing

[Stephen Warren]

Thierry Reding wrote at Wednesday, February 22, 2012 8:17 AM:
> Add auxdata to instantiate a device tree for the PWFM controller and
> include a corresponding node in the device tree.

> diff --git a/arch/arm/boot/dts/tegra30.dtsi b/arch/arm/boot/dts/tegra30.dtsi

> +	pwm: pwm at 7000a000 {
> +		compatible = "nvidia,tegra20-pwm";
> +		reg = <0x7000a000 0x100>;
> +		#pwm-cells = <2>;
> +	};

The compatible value probably should list both Tegra30 and Tegra20, so
we can know exactly which HW is present, just in case we need to turn
on some bug-fix only for one of the variants:

    compatible = "nvidia,tegra30-pwm", "nvidia,tegra20-pwm";

Could you also write binding documentation, in particular explaining
what the two pwm-cells are specifically for Tegra:

Documentation/devicetree/bindings/pwm/nvidia,tegra20-pwm.txt

(although perhaps that'd be part of the previous patch which implements
the driver)

-- 
nvpublic