| Message ID | 20210211051148.16722-2-nava.manne@xilinx.com |
|---|---|
| State | Accepted |
| Commit | 71c3980b8cc8ddaa523a3061392f5298c4798206 |
| Headers | show |
| Series | [v2,1/2] dt-bindings: fpga: Add compatible value for Xilinx DFX AXI shutdown manager | expand |
On 2/10/21 9:11 PM, Nava kishore Manne wrote: > This patch Adds compatible value for Xilinx Dynamic Function eXchnage(DFX) > AXI Shutdown manager IP. > > Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com> > --- > Changes for v2: > -Modified the doc and added DFX axi shutdown manager node > example node as suggested by Tom Rix. > > .../bindings/fpga/xilinx-pr-decoupler.txt | 24 ++++++++++++++++++- > 1 file changed, 23 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt > index 4284d293fa61..0acdfa6d62a4 100644 > --- a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt > +++ b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt > @@ -7,13 +7,24 @@ changes from passing through the bridge. The controller can also > couple / enable the bridges which allows traffic to pass through the > bridge normally. > > +Xilinx LogiCORE Dynamic Function eXchange(DFX) AXI shutdown manager > +Softcore is compatible with the Xilinx LogiCORE pr-decoupler. > + > +The Dynamic Function eXchange AXI shutdown manager prevents AXI traffic > +from passing through the bridge. The controller safely handles AXI4MM > +and AXI4-Lite interfaces on a Reconfigurable Partition when it is > +undergoing dynamic reconfiguration, preventing the system deadlock > +that can occur if AXI transactions are interrupted by DFX > + > The Driver supports only MMIO handling. A PR region can have multiple > PR Decouplers which can be handled independently or chained via decouple/ > decouple_status signals. > > Required properties: > - compatible : Should contain "xlnx,pr-decoupler-1.00" followed by > - "xlnx,pr-decoupler" > + "xlnx,pr-decoupler" or > + "xlnx,dfx-axi-shutdown-manager-1.00" followed by > + "xlnx,dfx-axi-shutdown-manager" > - regs : base address and size for decoupler module > - clocks : input clock to IP > - clock-names : should contain "aclk" > @@ -22,6 +33,7 @@ See Documentation/devicetree/bindings/fpga/fpga-region.txt and > Documentation/devicetree/bindings/fpga/fpga-bridge.txt for generic bindings. > > Example: > +Partial Reconfig Decoupler: > fpga-bridge@100000450 { > compatible = "xlnx,pr-decoupler-1.00", > "xlnx-pr-decoupler"; > @@ -30,3 +42,13 @@ Example: > clock-names = "aclk"; > bridge-enable = <0>; > }; > + > +Dynamic Function eXchange AXI shutdown manager: > + fpga-bridge@100000450 { > + compatible = "xlnx,dfx-axi-shutdown-manager-1.00", > + "xlnx,dfx-axi-shutdown-manager"; > + regs = <0x10000045 0x10>; > + clocks = <&clkc 15>; > + clock-names = "aclk"; > + bridge-enable = <0>; > + }; Thanks for the example. Reviewed-by: Tom Rix <trix@redhat.com>
On Thu, 11 Feb 2021 10:41:47 +0530, Nava kishore Manne wrote: > This patch Adds compatible value for Xilinx Dynamic Function eXchnage(DFX) > AXI Shutdown manager IP. > > Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com> > --- > Changes for v2: > -Modified the doc and added DFX axi shutdown manager node > example node as suggested by Tom Rix. > > .../bindings/fpga/xilinx-pr-decoupler.txt | 24 ++++++++++++++++++- > 1 file changed, 23 insertions(+), 1 deletion(-) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt index 4284d293fa61..0acdfa6d62a4 100644 --- a/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt +++ b/Documentation/devicetree/bindings/fpga/xilinx-pr-decoupler.txt @@ -7,13 +7,24 @@ changes from passing through the bridge. The controller can also couple / enable the bridges which allows traffic to pass through the bridge normally. +Xilinx LogiCORE Dynamic Function eXchange(DFX) AXI shutdown manager +Softcore is compatible with the Xilinx LogiCORE pr-decoupler. + +The Dynamic Function eXchange AXI shutdown manager prevents AXI traffic +from passing through the bridge. The controller safely handles AXI4MM +and AXI4-Lite interfaces on a Reconfigurable Partition when it is +undergoing dynamic reconfiguration, preventing the system deadlock +that can occur if AXI transactions are interrupted by DFX + The Driver supports only MMIO handling. A PR region can have multiple PR Decouplers which can be handled independently or chained via decouple/ decouple_status signals. Required properties: - compatible : Should contain "xlnx,pr-decoupler-1.00" followed by - "xlnx,pr-decoupler" + "xlnx,pr-decoupler" or + "xlnx,dfx-axi-shutdown-manager-1.00" followed by + "xlnx,dfx-axi-shutdown-manager" - regs : base address and size for decoupler module - clocks : input clock to IP - clock-names : should contain "aclk" @@ -22,6 +33,7 @@ See Documentation/devicetree/bindings/fpga/fpga-region.txt and Documentation/devicetree/bindings/fpga/fpga-bridge.txt for generic bindings. Example: +Partial Reconfig Decoupler: fpga-bridge@100000450 { compatible = "xlnx,pr-decoupler-1.00", "xlnx-pr-decoupler"; @@ -30,3 +42,13 @@ Example: clock-names = "aclk"; bridge-enable = <0>; }; + +Dynamic Function eXchange AXI shutdown manager: + fpga-bridge@100000450 { + compatible = "xlnx,dfx-axi-shutdown-manager-1.00", + "xlnx,dfx-axi-shutdown-manager"; + regs = <0x10000045 0x10>; + clocks = <&clkc 15>; + clock-names = "aclk"; + bridge-enable = <0>; + };
This patch Adds compatible value for Xilinx Dynamic Function eXchnage(DFX) AXI Shutdown manager IP. Signed-off-by: Nava kishore Manne <nava.manne@xilinx.com> --- Changes for v2: -Modified the doc and added DFX axi shutdown manager node example node as suggested by Tom Rix. .../bindings/fpga/xilinx-pr-decoupler.txt | 24 ++++++++++++++++++- 1 file changed, 23 insertions(+), 1 deletion(-)