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.
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