On Mon, Oct 07, 2013 at 03:19:02PM -0600, Stephen Warren wrote:
> On 10/07/2013 05:48 AM, Thierry Reding wrote:
> > From: Mikko Perttunen <mperttunen@xxxxxxxxxx>
> >
> > Add host1x, DC (display controller) and HDMI devices to Tegra114
> > device tree.
>
> > diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi
>
> > + dc@54200000 {
> > + compatible = "nvidia,tegra114-dc", "nvidia,tegra20-dc";
>
> Is the HW really 100% backwards-compatible, such that any driver that
> only knew about the Tegra20 HW could work unmodified on Tegra114?
> Perhaps that's possible, since your large driver patch doesn't seem to
> have a patch to add Tegra114 DC support...
AFAIK the DC hasn't changed since Tegra20. Or at least not significantly
enough that it doesn't work with the generic driver. There might be more
features, but nothing backwards incompatible.
Thierry
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