[U-Boot] [PATCH v2 3/4] colibri_t20: fix display configuration

[Stephen Warren]

On 09/14/2016 04:14 PM, Marcel Ziswiler wrote:
> Without this patch the following error will be shown:
>
> stdio_add_devices: Video device failed (ret=-22)
>
> As commit ec5507707a1d1e84056a6c864338f95f6118d3ca (video: tegra: Move
> to using simple-panel and pwm-backlight) states the Colibri T20 needs
> updating too which this patch finally attempts doing.
>
> Please note that the current U-Boot implementation requires a dummy
> GPIO e.g. for a fixed backlight regulator to be explicitly defined in
> order to work unlike in the Linux kernel where this is taken care of
> automatically.

> diff --git a/arch/arm/dts/tegra20-colibri.dts b/arch/arm/dts/tegra20-colibri.dts

> +			compatible = "regulator-fixed";
> +			reg = <0>;
> +			regulator-name = "+V3.3";
> +			regulator-min-microvolt = <3300000>;
> +			regulator-max-microvolt = <3300000>;
> +			regulator-always-on;
> +			/* Dummy N/C */
> +			gpio = <&gpio TEGRA_GPIO(V, 7) GPIO_ACTIVE_HIGH>;

NAK while this new DT doesn't actually represent the HW.