From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Return-Path: From: Hanjie Lin To: Bjorn Helgaas Subject: [PATCH 1/2] dt-bindings: PCI: meson: add DT bindings for Amlogic Meson PCIe controller Date: Tue, 14 Aug 2018 02:18:41 -0400 Message-ID: <1534227522-186798-2-git-send-email-hanjie.lin@amlogic.com> In-Reply-To: <1534227522-186798-1-git-send-email-hanjie.lin@amlogic.com> References: <1534227522-186798-1-git-send-email-hanjie.lin@amlogic.com> MIME-Version: 1.0 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Rob Herring , Yue Wang , devicetree@vger.kernel.org, Kevin Hilman , linux-kernel@vger.kernel.org, Yue Wang , linux-pci@vger.kernel.org, linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+bjorn=helgaas.com@lists.infradead.org List-ID: From: Yue Wang The Amlogic Meson PCIe host controller is based on the Synopsys DesignWare PCI core. This patch adds documentation for the DT bindings in Meson PCIe controller. Signed-off-by: Yue Wang Signed-off-by: Hanjie Lin --- .../devicetree/bindings/pci/amlogic,meson-pcie.txt | 57 ++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt diff --git a/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt new file mode 100644 index 0000000..48233e4 --- /dev/null +++ b/Documentation/devicetree/bindings/pci/amlogic,meson-pcie.txt @@ -0,0 +1,57 @@ +Amlogic Meson AXG DWC PCIE SoC controller + +Amlogic Meson PCIe host controller is based on the Synopsys DesignWare PCI core. +It shares common functions with the PCIe DesignWare core driver and +inherits common properties defined in +Documentation/devicetree/bindings/pci/designware-pci.txt. + +Additional properties are described here: + +Required properties: +- compatible: + should contain "amlogic,axg-pcie" to identify the core. +- reg: + Should contain the configuration address space. +- reg-names: Must be + - "elbi" External local bus interface registers + - "cfg" Meson specific registers + - "config" PCIe configuration space +- clocks: Must contain an entry for each entry in clock-names. +- clock-names: Must include the following entries: + - "pcie" + - "pcie_bus" + - "pcie_general" + - "pcie_mipi_en" + +Example configuration: + + pcie: pcie@dffff000 { + compatible = "amlogic,axg-pcie", "snps,dw-pcie"; + reg = <0x0 0xf9800000 0x0 0x400000 + 0x0 0xff646000 0x0 0x2000 + 0x0 0xf9f00000 0x0 0x100000>; + reg-names = "elbi", "cfg", "config"; + reset-gpio = <&gpio GPIOX_19 GPIO_ACTIVE_HIGH>; + interrupts = <0 177 IRQ_TYPE_EDGE_RISING>; + #interrupt-cells = <1>; + interrupt-map-mask = <0 0 0 0>; + interrupt-map = <0 0 0 0 &gic GIC_SPI 179 IRQ_TYPE_EDGE_RISING>; + bus-range = <0x0 0xff>; + #address-cells = <3>; + #size-cells = <2>; + device_type = "pci"; + phys = <&pcie_phy>; + ranges = <0x82000000 0 0 0x0 0xf9c00000 0 0x00300000>; + num-lanes = <1>; + pcie-num = <1>; + + clocks = <&clkc CLKID_USB + &clkc CLKID_MIPI_ENABLE + &clkc CLKID_PCIE_A + &clkc CLKID_PCIE_CML_EN0>; + clock-names = "pcie_general", + "pcie_refpll", + "pcie_mipi_en", + "pcie", + "port"; + }; -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel