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[75.142.250.213]) by smtp.gmail.com with ESMTPSA id m5sm10426198qtu.45.2021.03.04.05.53.56 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 04 Mar 2021 05:53:57 -0800 (PST) Subject: Re: [PATCH v2 1/2] dt-bindings: fpga: Add compatible value for Xilinx DFX AXI shutdown manager To: Nava kishore Manne , mdf@kernel.org, robh+dt@kernel.org, michal.simek@xilinx.com, linux-fpga@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, chinnikishore369@gmail.com Cc: git@xilinx.com References: <20210211051148.16722-1-nava.manne@xilinx.com> <20210211051148.16722-2-nava.manne@xilinx.com> From: Tom Rix Message-ID: <6e4ff0b7-7f63-46f8-e713-ca07f532336d@redhat.com> Date: Thu, 4 Mar 2021 05:53:55 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.7.0 MIME-Version: 1.0 In-Reply-To: <20210211051148.16722-2-nava.manne@xilinx.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=trix@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 > --- > 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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel