| Message ID | 20160928182200.15800-4-atull@opensource.altera.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Wed, Sep 28, 2016 at 01:21:51PM -0500, Alan Tull wrote: > Add bindings document for the Altera Freeze Bridge. A Freeze > Bridge is used to gate traffic to/from a region of a FPGA > such that that region can be reprogrammed. The Freeze Bridge > exist in FPGA fabric that is not currently being reconfigured. > > Signed-off-by: Alan Tull <atull@opensource.altera.com> > Signed-off-by: Matthew Gerlach <mgerlach@opensource.altera.com> > --- > v19: Added in v19 of patchset, uses fpga image info struct > --- > .../bindings/fpga/altera-freeze-bridge.txt | 23 ++++++++++++++++++++++ > 1 file changed, 23 insertions(+) > create mode 100644 Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt > > diff --git a/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt > new file mode 100644 > index 0000000..97ecc11 > --- /dev/null > +++ b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt > @@ -0,0 +1,23 @@ > +Altera Freeze Bridge Controller Driver > + > +The Altera Freeze Bridge Controller manages one or more freeze bridges. > +The controller can freeze/disable the bridges which prevents signal > +changes from passing through the bridge. The controller can also > +unfreeze/enable the bridges which allows traffic to pass through the > +bridge normally. > + > +Required properties: > +- compatible : Should contain "altr,freeze-bridge-controller" Only one version of the h/w? > +- regs : base address and size for freeze bridge module > + > +Optional properties: > +- bridge-enable : 0 if driver should disable bridge at startup > + 1 if driver should enable bridge at startup > + Default is to leave bridge in current state. > + > +Example: > + freeze_controller@100000450 { Underscore... > + compatible = "altr,freeze-bridge-controller"; > + regs = <0x1000 0x10>; > + bridge-enable = <0>; > + }; > -- > 2.9.3 > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html
On Sat, 8 Oct 2016, Rob Herring wrote: > On Wed, Sep 28, 2016 at 01:21:51PM -0500, Alan Tull wrote: > > Add bindings document for the Altera Freeze Bridge. A Freeze > > Bridge is used to gate traffic to/from a region of a FPGA > > such that that region can be reprogrammed. The Freeze Bridge > > exist in FPGA fabric that is not currently being reconfigured. > > > > Signed-off-by: Alan Tull <atull@opensource.altera.com> > > Signed-off-by: Matthew Gerlach <mgerlach@opensource.altera.com> > > --- > > v19: Added in v19 of patchset, uses fpga image info struct > > --- > > .../bindings/fpga/altera-freeze-bridge.txt | 23 ++++++++++++++++++++++ > > 1 file changed, 23 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt > > > > diff --git a/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt > > new file mode 100644 > > index 0000000..97ecc11 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt > > @@ -0,0 +1,23 @@ > > +Altera Freeze Bridge Controller Driver > > + > > +The Altera Freeze Bridge Controller manages one or more freeze bridges. > > +The controller can freeze/disable the bridges which prevents signal > > +changes from passing through the bridge. The controller can also > > +unfreeze/enable the bridges which allows traffic to pass through the > > +bridge normally. > > + > > +Required properties: > > +- compatible : Should contain "altr,freeze-bridge-controller" > > Only one version of the h/w? The h/w has a version register. Currently the driver reads the reg and exits if rev != 2. Future version support can be keyed off this register. > > > +- regs : base address and size for freeze bridge module > > + > > +Optional properties: > > +- bridge-enable : 0 if driver should disable bridge at startup > > + 1 if driver should enable bridge at startup > > + Default is to leave bridge in current state. > > + > > +Example: > > + freeze_controller@100000450 { > > Underscore... Yes. > > > + compatible = "altr,freeze-bridge-controller"; > > + regs = <0x1000 0x10>; > > + bridge-enable = <0>; > > + }; > > -- > > 2.9.3 > > > > -- > > To unsubscribe from this list: send the line "unsubscribe devicetree" 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/fpga/altera-freeze-bridge.txt b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt new file mode 100644 index 0000000..97ecc11 --- /dev/null +++ b/Documentation/devicetree/bindings/fpga/altera-freeze-bridge.txt @@ -0,0 +1,23 @@ +Altera Freeze Bridge Controller Driver + +The Altera Freeze Bridge Controller manages one or more freeze bridges. +The controller can freeze/disable the bridges which prevents signal +changes from passing through the bridge. The controller can also +unfreeze/enable the bridges which allows traffic to pass through the +bridge normally. + +Required properties: +- compatible : Should contain "altr,freeze-bridge-controller" +- regs : base address and size for freeze bridge module + +Optional properties: +- bridge-enable : 0 if driver should disable bridge at startup + 1 if driver should enable bridge at startup + Default is to leave bridge in current state. + +Example: + freeze_controller@100000450 { + compatible = "altr,freeze-bridge-controller"; + regs = <0x1000 0x10>; + bridge-enable = <0>; + };