linux-kernel - [PATCH v4 4/5] Documentation: dt-bindings: pci: altera pcie device tree binding

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Message-ID: <1439802579-22651-5-git-send-email-lftan@altera.com>
Date:	Mon, 17 Aug 2015 17:09:38 +0800
From:	Ley Foon Tan <lftan@...era.com>
To:	Bjorn Helgaas <bhelgaas@...gle.com>,
	Russell King <linux@....linux.org.uk>,
	Marc Zyngier <marc.zyngier@....com>
CC:	Arnd Bergmann <arnd@...db.de>,
	Dinh Nguyen <dinguyen@...nsource.altera.com>,
	<linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	Ley Foon Tan <lftan@...era.com>, <lftan.linux@...il.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"Kumar Gala" <galak@...eaurora.org>
Subject: [PATCH v4 4/5] Documentation: dt-bindings: pci: altera pcie device tree binding

This patch adds the bindings for Altera PCIe host controller driver and
Altera PCIe MSI driver.

Signed-off-by: Ley Foon Tan <lftan@...era.com>
---
 .../devicetree/bindings/pci/altera-pcie-msi.txt    | 27 ++++++++++++
 .../devicetree/bindings/pci/altera-pcie.txt        | 49 ++++++++++++++++++++++
 2 files changed, 76 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
 create mode 100644 Documentation/devicetree/bindings/pci/altera-pcie.txt

diff --git a/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt b/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
new file mode 100644
index 0000000..7f330c9
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/altera-pcie-msi.txt
@@ -0,0 +1,27 @@
+* Altera PCIe MSI controller
+
+Required properties:
+- compatible:	should contain "altr,msi-1.0"
+- reg:		specifies the physical base address of the controller and
+		the length of the memory mapped region.
+- reg-names:	Must include the following entries:
+		"csr": CSR registers
+		"vector_slave": vectors region
+-interrupts:	specifies the interrupt source of the parent interrupt
+		controller. The format of the interrupt specifier depends on the
+		parent interrupt controller.
+- num-vectors:	Number of vectors, range 1 to 32.
+- msi-controller:	indicates that this is MSI controller node
+
+
+Example
+msi0: msi@...F200000 {
+	compatible = "altr,msi-1.0";
+	reg = <0xFF200000 0x00000010
+		0xFF200010 0x00000080>;
+	reg-names = "csr", "vector_slave";
+	interrupt-parent = <&hps_0_arm_gic_0>;
+	interrupts = <0 42 4>;
+	msi-controller = <1>;
+	num-vectors = <32>;
+};
diff --git a/Documentation/devicetree/bindings/pci/altera-pcie.txt b/Documentation/devicetree/bindings/pci/altera-pcie.txt
new file mode 100644
index 0000000..73a8dc0
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/altera-pcie.txt
@@ -0,0 +1,49 @@
+* Altera PCIe controller
+
+Required properties:
+- compatible :	should contain "altr,pcie-root-port-1.0"
+- reg:		A list of physical base address and length for TXS and CRA.
+- reg-names:	Must include the following entries:
+		"Txs" or "txs": TXS region
+		"Cra" or "cra": Control register access region
+-interrupts:	specifies the interrupt source of the parent interrupt controller.
+		The format of the interrupt specifier depends on the parent interrupt
+		controller.
+- device_type:	must be "pci"
+- #address-cells:	set to <3>
+- #size-cells:	set to <2>
+- #interrupt-cells:	set to <1>
+- ranges:		Describes the translation of addresses for root ports and standard
+		PCI regions.
+- interrupt-map-mask and interrupt-map: standard PCI properties
+	to define the mapping of the PCIe interface to interrupt
+	numbers.
+
+Optional properties:
+- msi-parent:	Link to the hardware entity that serves as the MSI controller for this PCIe
+		controller.
+- bus-range:	PCI bus numbers covered
+
+Example
+	pcie_0: pcie@...00000000 {
+		compatible = "altr,pcie-root-port-1.0";
+		reg = <0xc0000000 0x20000000>,
+			<0xff220000 0x00004000>;
+		reg-names = "Txs", "Cra";
+		interrupt-parent = <&hps_0_arm_gic_0>;
+		interrupts = <0 40 4>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		bus-range = <0x0 0xFF>;
+		device_type = "pci";
+		msi-parent = <&msi_to_gic_gen_0>;
+		#address-cells = <3>;
+		#size-cells = <2>;
+		interrupt-map-mask = <0 0 0 7>;
+		interrupt-map = <0 0 0 1 &pcie_0 1>,
+			            <0 0 0 2 &pcie_0 2>,
+			            <0 0 0 3 &pcie_0 3>,
+			            <0 0 0 4 &pcie_0 4>;
+		ranges = <0x82000000 0x00000000 0x00000000 0xc0000000 0x00000000 0x10000000
+			    0x82000000 0x00000000 0x10000000 0xd0000000 0x00000000 0x10000000>;
+	};
-- 
1.8.2.1

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