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CC:     Mingkai Hu <mingkai.hu@nxp.com>,
        "M.h. Lian" <minghuan.lian@nxp.com>,
        Xiaowei Bao <xiaowei.bao@nxp.com>,
        "Z.q. Hou" <zhiqiang.hou@nxp.com>
Subject: [PATCHv8 3/7] dt-bindings: PCI: Add NXP Layerscape SoCs PCIe Gen4
 controller
Thread-Topic: [PATCHv8 3/7] dt-bindings: PCI: Add NXP Layerscape SoCs PCIe
 Gen4 controller
Thread-Index: AQHVUcbW7ucpasppU0mitU96n3BoYQ==
Date:   Tue, 13 Aug 2019 11:04:11 +0000
Message-ID: <20190813110557.45643-4-Zhiqiang.Hou@nxp.com>
References: <20190813110557.45643-1-Zhiqiang.Hou@nxp.com>
In-Reply-To: <20190813110557.45643-1-Zhiqiang.Hou@nxp.com>
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From: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>

Add PCIe Gen4 controller DT bindings of NXP Layerscape SoCs.

Signed-off-by: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
V8:
 - No change.

 .../bindings/pci/layerscape-pcie-gen4.txt     | 52 +++++++++++++++++++
 MAINTAINERS                                   |  8 +++
 2 files changed, 60 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/layerscape-pcie-g=
en4.txt

diff --git a/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt=
 b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
new file mode 100644
index 000000000000..b40fb5d15d3d
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
@@ -0,0 +1,52 @@
+NXP Layerscape PCIe Gen4 controller
+
+This PCIe controller is based on the Mobiveil PCIe IP and thus inherits al=
l
+the common properties defined in mobiveil-pcie.txt.
+
+Required properties:
+- compatible: should contain the platform identifier such as:
+  "fsl,lx2160a-pcie"
+- reg: base addresses and lengths of the PCIe controller register blocks.
+  "csr_axi_slave": Bridge config registers
+  "config_axi_slave": PCIe controller registers
+- interrupts: A list of interrupt outputs of the controller. Must contain =
an
+  entry for each entry in the interrupt-names property.
+- interrupt-names: It could include the following entries:
+  "intr": The interrupt that is asserted for controller interrupts
+  "aer": Asserted for aer interrupt when chip support the aer interrupt wi=
th
+	 none MSI/MSI-X/INTx mode,but there is interrupt line for aer.
+  "pme": Asserted for pme interrupt when chip support the pme interrupt wi=
th
+	 none MSI/MSI-X/INTx mode,but there is interrupt line for pme.
+- dma-coherent: Indicates that the hardware IP block can ensure the cohere=
ncy
+  of the data transferred from/to the IP block. This can avoid the softwar=
e
+  cache flush/invalid actions, and improve the performance significantly.
+- msi-parent : See the generic MSI binding described in
+  Documentation/devicetree/bindings/interrupt-controller/msi.txt.
+
+Example:
+
+	pcie@3400000 {
+		compatible =3D "fsl,lx2160a-pcie";
+		reg =3D <0x00 0x03400000 0x0 0x00100000   /* controller registers */
+		       0x80 0x00000000 0x0 0x00001000>; /* configuration space */
+		reg-names =3D "csr_axi_slave", "config_axi_slave";
+		interrupts =3D <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>, /* AER interrupt */
+			     <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>, /* PME interrupt */
+			     <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>; /* controller interrupt */
+		interrupt-names =3D "aer", "pme", "intr";
+		#address-cells =3D <3>;
+		#size-cells =3D <2>;
+		device_type =3D "pci";
+		apio-wins =3D <8>;
+		ppio-wins =3D <8>;
+		dma-coherent;
+		bus-range =3D <0x0 0xff>;
+		msi-parent =3D <&its>;
+		ranges =3D <0x82000000 0x0 0x40000000 0x80 0x40000000 0x0 0x40000000>;
+		#interrupt-cells =3D <1>;
+		interrupt-map-mask =3D <0 0 0 7>;
+		interrupt-map =3D <0000 0 0 1 &gic 0 0 GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+				<0000 0 0 2 &gic 0 0 GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
+				<0000 0 0 3 &gic 0 0 GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>,
+				<0000 0 0 4 &gic 0 0 GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+	};
diff --git a/MAINTAINERS b/MAINTAINERS
index 0d88e0d3960b..f9c1153ef60a 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -12324,6 +12324,14 @@ L:	linux-arm-kernel@lists.infradead.org
 S:	Maintained
 F:	drivers/pci/controller/dwc/*layerscape*
=20
+PCI DRIVER FOR NXP LAYERSCAPE GEN4 CONTROLLER
+M:	Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
+L:	linux-pci@vger.kernel.org
+L:	linux-arm-kernel@lists.infradead.org
+S:	Maintained
+F:	Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
+F:	drivers/pci/controller/mobibeil/pcie-layerscape-gen4.c
+
 PCI DRIVER FOR GENERIC OF HOSTS
 M:	Will Deacon <will@kernel.org>
 L:	linux-pci@vger.kernel.org
--=20
2.17.1