Hi, Please ignore this V5 patch series. Thanks, BRs > -----Original Message----- > From: Xiubo Li [mailto:Li.Xiubo@xxxxxxxxxxxxx] > Sent: Tuesday, July 15, 2014 12:18 PM > To: broonie@xxxxxxxxxx; mark.rutland@xxxxxxx > Cc: robh+dt@xxxxxxxxxx; pawel.moll@xxxxxxx; ijc+devicetree@xxxxxxxxxxxxxx; > galak@xxxxxxxxxxxxxx; gregkh@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; Xiubo Li-B47053 > Subject: [PATCHv5 2/2] dt/bindings: Add the DT binding documentation for > endianness > > Device-Tree binding for device endianness > Index Device Endianness properties > --------------------------------------------------- > 1 BE 'big-endian' > 2 LE 'little-endian' > > For one device driver, which will run in different scenarios above > on different SoCs using the devicetree, we need one way to simplify > this. > > Signed-off-by: Xiubo Li <Li.Xiubo@xxxxxxxxxxxxx> > --- > .../devicetree/bindings/regmap/regmap.txt | 48 > ++++++++++++++++++++++ > 1 file changed, 48 insertions(+) > create mode 100644 Documentation/devicetree/bindings/regmap/regmap.txt > > diff --git a/Documentation/devicetree/bindings/regmap/regmap.txt > b/Documentation/devicetree/bindings/regmap/regmap.txt > new file mode 100644 > index 0000000..cc5f7f8 > --- /dev/null > +++ b/Documentation/devicetree/bindings/regmap/regmap.txt > @@ -0,0 +1,48 @@ > +Device-Tree binding for device endianness > + > +The endianness mode of CPU & Device scenarios: > +Index CPU Device Endianness properties > +------------------------------------------------------------ > +1 LE LE - > +2 LE BE 'big-endian{,-*}' > +3 BE BE - > +4 BE LE 'little-endian{,-*}' > + > +For one device driver, which will run in different scenarios above > +on different SoCs using the devicetree, we need one way to simplify > +this. > + > +Required properties: > +- {big,little}-endian{,-*}: these are boolean properties, if absent > + meaning that the CPU and the Device are in the same endianness mode. > + > +Examples: > +Scenario 1 : CPU in LE mode & device in LE mode. > +dev: dev@40031000 { > + compatible = "name"; > + reg = <0x40031000 0x1000>; > + ... > +}; > + > +Scenario 2 : CPU in LE mode & device in BE mode. > +dev: dev@40031000 { > + compatible = "name"; > + reg = <0x40031000 0x1000>; > + ... > + big-endian{,-*}; > +}; > + > +Scenario 3 : CPU in BE mode & device in BE mode. > +dev: dev@40031000 { > + compatible = "name"; > + reg = <0x40031000 0x1000>; > + ... > +}; > + > +Scenario 4 : CPU in BE mode & device in LE mode. > +dev: dev@40031000 { > + compatible = "name"; > + reg = <0x40031000 0x1000>; > + ... > + little-endian{,-*}; > +}; > -- > 1.8.5 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
