On Tue, Aug 26, 2014 at 1:57 AM, Simon Horman [off-list ref] wrote:

On Mon, Aug 25, 2014 at 02:59:46PM +0200, Geert Uytterhoeven wrote:

quoted

Hi Mikhail,

On Mon, Aug 25, 2014 at 2:35 PM, Mikhail Ulyanov
[off-list ref] wrote:

quoted

+  - compatible: should containg one of the following:
+                       - "renesas,jpu-r8a7790" for R-Car H2
+                       - "renesas,jpu-r8a7791" for R-Car M2
+                       - "renesas,jpu-gen2" for R-Car second generation

Isn't "renesas,jpu-gen2" meant as a fallback?

I.e. the DTS should have one of '7790 and '7791, AND the gen2 fallback,
so we can make the driver match against '7790 and '7791 is we find
out about an incompatibility.

Is there a document that clearly states that there is such a thing
as jpu-gen2 in hardware? If not I would prefer not to add a binding for it.

We do have a document that describes the "JPEG Processing Unit (JPU)",
as found in the following members of the "Second Generation R-Car Series
Products": "R-Car H2", "R-Car M2-W", "R-Car M2-N", and "R-Car V2H".

As for other SoCs, M1, H1, and A1 also seem to contain a JPU, but just
like Mikhail, I don't have enough information to say anything about those.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds