On Tue, Dec 1, 2015 at 7:47 AM, Simon Horman <horms@xxxxxxxxxxxx> wrote:
> On Wed, Nov 25, 2015 at 09:20:32AM +0900, Simon Horman wrote:
>> On Tue, Nov 24, 2015 at 02:16:55PM -0600, Rob Herring wrote:
>> > On Tue, Nov 24, 2015 at 11:20:41AM +0900, Simon Horman wrote:
>> > > In general Renesas hardware is not documented to the extent where the
>> > > relationship between IP blocks on different SoCs can be assumed although
>> > > they may appear to operate the same way. Furthermore the documentation
>> > > typically does not specify a version for individual IP blocks. For these
>> > > reasons a convention of using the SoC name in place of a version and
>> > > providing SoC-specific compat strings has been adopted.
>> > >
>> > > Although not universally liked this convention is used in the bindings for
>> > > most drivers for Renesas hardware. The purpose of this patch is to
>> > > update the Renesas USB DMA Controller driver to follow this convention.
>> > >
>> > > Cc: devicetree@xxxxxxxxxxxxxxx
>> > > Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx>
>> > > Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
>> > >
>> > > ---
>> > > * r8a7792 (R-Car V2H) is omitted as my reading of the documentation
>> > > is that Renesas USB-DMAC does not exist on that SoC
>> > > * r8a7795 (R-Car H2) is omitted as its unclear to me on the compatibility
>> > > of USB-DMAC that SoC
>> > >
>> > > * Once this has been merged I intend to provide follow-up patches
>> > > to use these new compat strings in the relevant dtsi files.
>> > > ---
>> > > Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt | 9 +++++++--
>> > > 1 file changed, 7 insertions(+), 2 deletions(-)
>> > >
>> > > diff --git a/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt b/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
>> > > index 040f365954cc..3bb624e10615 100644
>> > > --- a/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
>> > > +++ b/Documentation/devicetree/bindings/dma/renesas,usb-dmac.txt
>> > > @@ -1,7 +1,12 @@
>> > > * Renesas USB DMA Controller Device Tree bindings
>> > >
>> > > Required Properties:
>> > > -- compatible: must contain "renesas,usb-dmac"
>> > > +- compatible: "renesas,usb-dmac-<soctype>", "renesas,usb-dmac" as fallback.
>> > > + Examples with soctypes are:
>> > > + - "renesas,usb-dmac-r8a7790" (R-Car H2)
>> > > + - "renesas,usb-dmac-r8a7791" (R-Car M2-W)
>> > > + - "renesas,usb-dmac-r8a7793" (R-Car M2-N)
>> > > + - "renesas,usb-dmac-r8a7794" (R-Car E2)
>> >
>> > Weren't you changing the order of SoC and block names on new bindings?
>>
>> Could you clarify what the desired order is?
>> My intention is for these bindings to use the preferred order.
>
> ping
Not speaking for Rob, but I think he means e.g. "renesas,r8a7790-usb-dmac".
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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