Hi Rob, 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 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
