Re: [PATCH] drm: rcar-du: Drop LVDS device tree backward compatibility

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Hi Laurent,

Thanks for your patch!

On Wed, Jan 26, 2022 at 9:30 PM Laurent Pinchart
<laurent.pinchart+renesas@xxxxxxxxxxxxxxxx> wrote:
> The rcar-du driver goes to great lengths to preserve device tree
> backward compatibility for the LVDS encoders by patching old device
> trees at runtime.
>
> The last R-Car Gen2 platform was converted to the new bindings commit
> edb0c3affe5214a2 ("ARM: dts: r8a7793: Convert to new LVDS DT bindings"),
> in v4.17, and the last RZ/G1 platform converted in commit
> 6a6a797625b5fe85 ("ARM: dts: r8a7743: Convert to new LVDS DT bindings"),
> in v5.0. Both are older than commit 58256143cff7c2e0 ("clk: renesas:
> Remove R-Car Gen2 legacy DT clock support"), in v5.5, which removes
> support for legacy bindings for clocks. The LBDS compatibility code is

LVDS

> thus not needed anymore. Drop it.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>

>  .../drm/rcar-du/rcar_du_of_lvds_r8a7795.dts   |  43 ---
>  .../drm/rcar-du/rcar_du_of_lvds_r8a7796.dts   |  43 ---

I had completely forgotten this was used on R-Car Gen3, too, until
commit 58e8ed2ee9abe718 ("arm64: dts: renesas: Convert to new LVDS
DT bindings") in v4.20.  I guess that's old enough?

Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

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



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