| Message ID | 1386947579-26703-2-git-send-email-james.hogan@imgtec.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Em Fri, 13 Dec 2013 15:12:49 +0000 James Hogan <james.hogan@imgtec.com> escreveu: > Add device tree binding for ImgTec Consumer Infrared block. > > Signed-off-by: James Hogan <james.hogan@imgtec.com> > Cc: Mauro Carvalho Chehab <m.chehab@samsung.com> > Cc: linux-media@vger.kernel.org > Cc: Rob Herring <rob.herring@calxeda.com> > Cc: Pawel Moll <pawel.moll@arm.com> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Stephen Warren <swarren@wwwdotorg.org> > Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> > Cc: devicetree@vger.kernel.org > Cc: Rob Landley <rob@landley.net> > Cc: linux-doc@vger.kernel.org It looks ok for me, but we should wait for a DT maintainer ack for this one. Regards, Mauro > --- > Documentation/devicetree/bindings/media/img-ir.txt | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/img-ir.txt > > diff --git a/Documentation/devicetree/bindings/media/img-ir.txt b/Documentation/devicetree/bindings/media/img-ir.txt > new file mode 100644 > index 000000000000..6f623b094ea6 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/img-ir.txt > @@ -0,0 +1,20 @@ > +* ImgTec Infrared (IR) decoder > + > +Required properties: > +- compatible: Should be "img,ir" > +- reg: Physical base address of the controller and length of > + memory mapped region. > +- interrupts: The interrupt specifier to the cpu. > + > +Optional properties: > +- clocks: Clock specifier for base clock. > + Defaults to 32.768KHz if not specified. > + > +Example: > + > + ir@02006200 { > + compatible = "img,ir"; > + reg = <0x02006200 0x100>; > + interrupts = <29 4>; > + clocks = <&clk_32khz>; > + };
Hi James, On Friday 13 of December 2013 15:12:49 James Hogan wrote: > Add device tree binding for ImgTec Consumer Infrared block. > > Signed-off-by: James Hogan <james.hogan@imgtec.com> > Cc: Mauro Carvalho Chehab <m.chehab@samsung.com> > Cc: linux-media@vger.kernel.org > Cc: Rob Herring <rob.herring@calxeda.com> > Cc: Pawel Moll <pawel.moll@arm.com> > Cc: Mark Rutland <mark.rutland@arm.com> > Cc: Stephen Warren <swarren@wwwdotorg.org> > Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> > Cc: devicetree@vger.kernel.org > Cc: Rob Landley <rob@landley.net> > Cc: linux-doc@vger.kernel.org > --- > Documentation/devicetree/bindings/media/img-ir.txt | 20 ++++++++++++++++++++ > 1 file changed, 20 insertions(+) > create mode 100644 Documentation/devicetree/bindings/media/img-ir.txt > > diff --git a/Documentation/devicetree/bindings/media/img-ir.txt b/Documentation/devicetree/bindings/media/img-ir.txt > new file mode 100644 > index 000000000000..6f623b094ea6 > --- /dev/null > +++ b/Documentation/devicetree/bindings/media/img-ir.txt > @@ -0,0 +1,20 @@ > +* ImgTec Infrared (IR) decoder > + > +Required properties: > +- compatible: Should be "img,ir" This compatible string isn't really very specific. Is there some IP revision string that could be added, to account for possible design changes that may require binding change? > +- reg: Physical base address of the controller and length of > + memory mapped region. > +- interrupts: The interrupt specifier to the cpu. > + > +Optional properties: > +- clocks: Clock specifier for base clock. > + Defaults to 32.768KHz if not specified. To make the binding less fragile and allow interoperability with non-DT platforms it may be better to provide also clock-names property (so you can use clk_get(); that's a Linux implementation detail, though, but to make our lives easier IMHO they should be sometimes considered too). Best regards, Tomasz -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On 22/12/13 12:48, Tomasz Figa wrote: >> diff --git a/Documentation/devicetree/bindings/media/img-ir.txt b/Documentation/devicetree/bindings/media/img-ir.txt >> new file mode 100644 >> index 000000000000..6f623b094ea6 >> --- /dev/null >> +++ b/Documentation/devicetree/bindings/media/img-ir.txt >> @@ -0,0 +1,20 @@ >> +* ImgTec Infrared (IR) decoder >> + >> +Required properties: >> +- compatible: Should be "img,ir" > > This compatible string isn't really very specific. Is there some IP > revision string that could be added, to account for possible design > changes that may require binding change? Yes, agreed. I'll try and find a more unambiguous name for the IP block. >> +- reg: Physical base address of the controller and length of >> + memory mapped region. >> +- interrupts: The interrupt specifier to the cpu. >> + >> +Optional properties: >> +- clocks: Clock specifier for base clock. >> + Defaults to 32.768KHz if not specified. > > To make the binding less fragile and allow interoperability with non-DT > platforms it may be better to provide also clock-names property (so you > can use clk_get(); that's a Linux implementation detail, though, but to > make our lives easier IMHO they should be sometimes considered too). Good idea. Looking at the hardware manual it actually describes 3 clock inputs, and although only one is needed by the driver it makes sense for the DT binding to be able to describe them all. I'll probably go with these clock-names values: "core": Core clock (32.867kHz) "sys": System side (fast) clock "mod": Power modulation clock Cheers James -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/media/img-ir.txt b/Documentation/devicetree/bindings/media/img-ir.txt new file mode 100644 index 000000000000..6f623b094ea6 --- /dev/null +++ b/Documentation/devicetree/bindings/media/img-ir.txt @@ -0,0 +1,20 @@ +* ImgTec Infrared (IR) decoder + +Required properties: +- compatible: Should be "img,ir" +- reg: Physical base address of the controller and length of + memory mapped region. +- interrupts: The interrupt specifier to the cpu. + +Optional properties: +- clocks: Clock specifier for base clock. + Defaults to 32.768KHz if not specified. + +Example: + + ir@02006200 { + compatible = "img,ir"; + reg = <0x02006200 0x100>; + interrupts = <29 4>; + clocks = <&clk_32khz>; + };
Add device tree binding for ImgTec Consumer Infrared block. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Mauro Carvalho Chehab <m.chehab@samsung.com> Cc: linux-media@vger.kernel.org Cc: Rob Herring <rob.herring@calxeda.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Stephen Warren <swarren@wwwdotorg.org> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: devicetree@vger.kernel.org Cc: Rob Landley <rob@landley.net> Cc: linux-doc@vger.kernel.org --- Documentation/devicetree/bindings/media/img-ir.txt | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/img-ir.txt