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[67.207.112.226]) by mx.google.com with ESMTPSA id hs4sm15127784pdb.30.2015.04.09.10.05.44 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 09 Apr 2015 10:05:45 -0700 (PDT) From: Duc Dang To: Bjorn Helgaas , Arnd Bergmann , Grant Likely , Liviu Dudau , Marc Zyngier Subject: [PATCH v3 3/4] documentation: dts: Add the device tree binding for APM X-Gene v1 PCIe MSI device tree node Date: Thu, 9 Apr 2015 10:05:05 -0700 Message-Id: X-Mailer: git-send-email 1.9.1 In-Reply-To: References: In-Reply-To: References: <20150408084448.5f0793b7@why.wild-wind.fr.eu.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20150409_100609_489202_414231A7 X-CRM114-Status: GOOD ( 10.97 ) X-Spam-Score: -2.3 (--) Cc: Feng Kan , linux-pci@vger.kernel.org, Duc Dang , linux-kernel@vger.kernel.org, Loc Ho , linux-arm-kernel@lists.infradead.org, Tanmay Inamdar X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The driver for this binding is under 'drivers/pci/host/pci-xgene-msi.c' Signed-off-by: Duc Dang Signed-off-by: Tanmay Inamdar --- .../devicetree/bindings/pci/xgene-pci-msi.txt | 63 ++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/xgene-pci-msi.txt diff --git a/Documentation/devicetree/bindings/pci/xgene-pci-msi.txt b/Documentation/devicetree/bindings/pci/xgene-pci-msi.txt new file mode 100644 index 0000000..0ffdcb3 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/xgene-pci-msi.txt @@ -0,0 +1,63 @@ +* AppliedMicro X-Gene PCIe MSI interface + +Required properties: + +- compatible: should contain "apm,xgene1-msi" to identify the core. +- msi-controller: indicates that this is X-Gene1 PCIe MSI controller node +- reg: A list of physical base address and length for each set of controller + registers. +- interrupts: A list of interrupt outputs of the controller. + +Each PCIe node needs to have property msi-parent that points to msi controller node + +Examples: + +SoC DTSI: + + + MSI node: + msi@79000000 { + compatible = "apm,xgene1-msi"; + msi-controller; + reg = <0x00 0x79000000 0x0 0x900000>; + interrupts = < 0x0 0x10 0x4 + 0x0 0x11 0x4 + 0x0 0x12 0x4 + 0x0 0x13 0x4 + 0x0 0x14 0x4 + 0x0 0x15 0x4 + 0x0 0x16 0x4 + 0x0 0x17 0x4 + 0x0 0x18 0x4 + 0x0 0x19 0x4 + 0x0 0x1a 0x4 + 0x0 0x1b 0x4 + 0x0 0x1c 0x4 + 0x0 0x1d 0x4 + 0x0 0x1e 0x4 + 0x0 0x1f 0x4>; + }; + + + PCIe controller node with msi-parent property pointing to MSI node: + pcie0: pcie@1f2b0000 { + status = "disabled"; + device_type = "pci"; + compatible = "apm,xgene-storm-pcie", "apm,xgene-pcie"; + #interrupt-cells = <1>; + #size-cells = <2>; + #address-cells = <3>; + reg = < 0x00 0x1f2b0000 0x0 0x00010000 /* Controller registers */ + 0xe0 0xd0000000 0x0 0x00040000>; /* PCI config space */ + reg-names = "csr", "cfg"; + ranges = <0x01000000 0x00 0x00000000 0xe0 0x10000000 0x00 0x00010000 /* io */ + 0x02000000 0x00 0x80000000 0xe1 0x80000000 0x00 0x80000000>; /* mem */ + dma-ranges = <0x42000000 0x80 0x00000000 0x80 0x00000000 0x00 0x80000000 + 0x42000000 0x00 0x00000000 0x00 0x00000000 0x80 0x00000000>; + interrupt-map-mask = <0x0 0x0 0x0 0x7>; + interrupt-map = <0x0 0x0 0x0 0x1 &gic 0x0 0xc2 0x1 + 0x0 0x0 0x0 0x2 &gic 0x0 0xc3 0x1 + 0x0 0x0 0x0 0x3 &gic 0x0 0xc4 0x1 + 0x0 0x0 0x0 0x4 &gic 0x0 0xc5 0x1>; + dma-coherent; + clocks = <&pcie0clk 0>; + msi-parent= <&msi>; + };