PCI: mobiveil: Add Mobiveil PCIe Host Bridge IP driver DT bindings

Add DT bindings for the Mobiveil PCIe Host Bridge IP driver and update the
vendor prefixes file.

Signed-off-by: Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rob Herring <robh@kernel.org>

diff --git a/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt b/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
new file mode 100644 (file)
index 0000000..65038aa
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
@@ -0,0 +1,73 @@
+* Mobiveil AXI PCIe Root Port Bridge DT description
+
+Mobiveil's GPEX 4.0 is a PCIe Gen4 root port bridge IP. This configurable IP
+has up to 8 outbound and inbound windows for the address translation.
+
+Required properties:
+- #address-cells: Address representation for root ports, set to <3>
+- #size-cells: Size representation for root ports, set to <2>
+- #interrupt-cells: specifies the number of cells needed to encode an
+       interrupt source. The value must be 1.
+- compatible: Should contain "mbvl,gpex40-pcie"
+- reg: Should contain PCIe registers location and length
+       "config_axi_slave": PCIe controller registers
+       "csr_axi_slave"   : Bridge config registers
+       "gpio_slave"      : GPIO registers to control slot power
+       "apb_csr"         : MSI registers
+
+- device_type: must be "pci"
+- apio-wins : number of requested apio outbound windows
+               default 2 outbound windows are configured -
+               1. Config window
+               2. Memory window
+- ppio-wins : number of requested ppio inbound windows
+               default 1 inbound memory window is configured.
+- bus-range: PCI bus numbers covered
+- interrupt-controller: identifies the node as an interrupt controller
+- #interrupt-cells: specifies the number of cells needed to encode an
+       interrupt source. The value must be 1.
+- interrupt-parent : phandle to the interrupt controller that
+               it is attached to, it should be set to gic to point to
+               ARM's Generic Interrupt Controller node in system DT.
+- interrupts: The interrupt line of the PCIe controller
+               last cell of this field is set to 4 to
+               denote it as IRQ_TYPE_LEVEL_HIGH type interrupt.
+- interrupt-map-mask,
+       interrupt-map: standard PCI properties to define the mapping of the
+       PCI interface to interrupt numbers.
+- ranges: ranges for the PCI memory regions (I/O space region is not
+       supported by hardware)
+       Please refer to the standard PCI bus binding document for a more
+       detailed explanation
+
+
+Example:
+++++++++
+       pcie0: pcie@a0000000 {
+               #address-cells = <3>;
+               #size-cells = <2>;
+               compatible = "mbvl,gpex40-pcie";
+               reg =   <0xa0000000 0x00001000>,
+                       <0xb0000000 0x00010000>,
+                       <0xff000000 0x00200000>,
+                       <0xb0010000 0x00001000>;
+               reg-names =     "config_axi_slave",
+                               "csr_axi_slave",
+                               "gpio_slave",
+                               "apb_csr";
+               device_type = "pci";
+               apio-wins = <2>;
+               ppio-wins = <1>;
+               bus-range = <0x00000000 0x000000ff>;
+               interrupt-controller;
+               interrupt-parent = <&gic>;
+               #interrupt-cells = <1>;
+               interrupts = < 0 89 4 >;
+               interrupt-map-mask = <0 0 0 7>;
+               interrupt-map = <0 0 0 0 &pci_express 0>,
+                               <0 0 0 1 &pci_express 1>,
+                               <0 0 0 2 &pci_express 2>,
+                               <0 0 0 3 &pci_express 3>;
+               ranges = < 0x83000000 0 0x00000000 0xa8000000 0 0x8000000>;
+
+       };

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index b5f978a..1b7e7c3 100644 (file)
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -203,6 +203,7 @@ lwn Liebherr-Werk Nenzing GmbH
 macnica        Macnica Americas
 marvell        Marvell Technology Group Ltd.
 maxim  Maxim Integrated Products
+mbvl   Mobiveil Inc.
 mcube  mCube
 meas   Measurement Specialties
 mediatek       MediaTek Inc.

diff --git a/MAINTAINERS b/MAINTAINERS
index 0a1410d..7fe4a2c 100644 (file)
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9393,6 +9393,13 @@ Q:       http://patchwork.linuxtv.org/project/linux-media/list/
 S:     Maintained
 F:     drivers/media/dvb-frontends/mn88473*
 
+PCI DRIVER FOR MOBIVEIL PCIE IP
+M:     Subrahmanya Lingappa <l.subrahmanya@mobiveil.co.in>
+L:     linux-pci@vger.kernel.org
+S:     Supported
+F:     Documentation/devicetree/bindings/pci/mobiveil-pcie.txt
+F:     drivers/pci/host/pcie-mobiveil.c
+
 MODULE SUPPORT
 M:     Jessica Yu <jeyu@kernel.org>
 T:     git git://git.kernel.org/pub/scm/linux/kernel/git/jeyu/linux.git modules-next