Hi Biju,
On Thu, Oct 5, 2017 at 5:19 PM, Biju Das <biju.das@xxxxxxxxxxxxxx> wrote:
> This patch adds support for r8a7743/5 SoC. The Renesas RZ/G1[ME]
> (R8A7743/5) usbdmac engine is identical to the R-Car Gen2 family.
>
> This doesn't change the driver, so it does nothing by itself. But it does
Wording it like this may give the wrong impression to the casual reader
that a driver change will be submitted separately.
No driver change is needed due to the fallback compatible value
"renesas,usb-dmac".
> mean that checkpatch won't complain about a future patch that adds
> "renesas,r8a7743-usb-dmac" or "renesas,r8a7745-usb-dmac" to a DT,
> which helps ensure that shipped DTs use documented compatibility strings.
Adding the SoC-specific compatible values here has two purposes:
1. Document which SoCs have this hardware module,
2. Allow checkpatch to validate compatible values.
> Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> --- a/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
> +++ b/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
> @@ -3,6 +3,8 @@
> Required Properties:
> -compatible: "renesas,<soctype>-usb-dmac", "renesas,usb-dmac" as fallback.
> Examples with soctypes are:
> + - "renesas,r8a7743-usb-dmac" (RZ/G1M)
> + - "renesas,r8a7745-usb-dmac" (RZ/G1E)
> - "renesas,r8a7790-usb-dmac" (R-Car H2)
> - "renesas,r8a7791-usb-dmac" (R-Car M2-W)
> - "renesas,r8a7793-usb-dmac" (R-Car M2-N)
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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