sti pcie is built around a Synopsis Designware PCIe IP.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@xxxxxx>
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@xxxxxxxxxx>
---
Documentation/devicetree/bindings/pci/st-pcie.txt | 56 +++++++++++++++++++++++
1 file changed, 56 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pci/st-pcie.txt
diff --git a/Documentation/devicetree/bindings/pci/st-pcie.txt b/Documentation/devicetree/bindings/pci/st-pcie.txt
new file mode 100644
index 0000000..32e76d0
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/st-pcie.txt
@@ -0,0 +1,56 @@
+STMicroelectronics STi PCIe controller
+
+This PCIe host controller is based on the Synopsis Designware PCIe IP
+and thus inherits all the common properties defined in designware-pcie.txt.
+
+Required properties:
+ - compatible: Should be "st,pcie", "snps,dw-pcie"
+
+ - reg: base address and length of the pcie controller, mem-window address
+ and length available to the controller.
+
+ - interrupts: one GIC interrupt line connected to PCI MSI interrupt line
+
+ - st,syscfg : should be a phandle of the syscfg node. Also contains syscfg
+ offset for IP configuration.
+
+ - resets: phandle to the powerdown and reset controller for the PCIe IP.
+ See ../reset/reset.txt for details.
+ - reset-names: should be "powerdown" and "softreset".
+
+ - phys: the phandle for the PHY device (used by generic PHY framework).
+ - phys-names: must be "pcie".
+
+Optional properties:
+ - reset-gpio: a GPIO spec to define which pin is connected to the bus reset.
+
+Example:
+
+pcie0: pcie@9b00000 {
+ compatible = "st,pcie", "snps,dw-pcie";
+ device_type = "pci";
+ reg = <0x09b00000 0x4000>, /* dbi cntrl registers */
+ <0x2fff0000 0x00010000>, /* configuration space */
+ <0x40000000 0x80000000>; /* lmi mem window */
+ reg-names = "dbi", "config", "mem-window";
+ st,syscfg = <&syscfg_core 0xd8 0xe0>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x82000000 0 0x20000000 0x20000000 0 0x0FFF0000>; /* non-prefetchable memory */
+ num-lanes = <1>;
+ interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 7>;
+ interrupt-map = <0 0 0 1 &intc GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>, /* INT A */
+ <0 0 0 2 &intc GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>, /* INT B */
+ <0 0 0 3 &intc GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>, /* INT C */
+ <0 0 0 4 &intc GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>; /* INT D */
+
+ resets = <&powerdown STIH407_PCIE0_POWERDOWN>,
+ <&softreset STIH407_PCIE0_SOFTRESET>;
+ reset-names = "powerdown",
+ "softreset";
+ phys = <&phy_port0 PHY_TYPE_PCIE>;
+ phy-names = "pcie";
+};
--
1.9.1
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