summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/pci/qcom,pcie.txt
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/pci/qcom,pcie.txt')
-rw-r--r--Documentation/devicetree/bindings/pci/qcom,pcie.txt290
1 files changed, 290 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
new file mode 100644
index 000000000..1fd703bd7
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
@@ -0,0 +1,290 @@
+* Qualcomm PCI express root complex
+
+- compatible:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Value should contain
+ - "qcom,pcie-ipq8064" for ipq8064
+ - "qcom,pcie-apq8064" for apq8064
+ - "qcom,pcie-apq8084" for apq8084
+ - "qcom,pcie-msm8996" for msm8996 or apq8096
+ - "qcom,pcie-ipq4019" for ipq4019
+ - "qcom,pcie-ipq8074" for ipq8074
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Register ranges as listed in the reg-names property
+
+- reg-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Must include the following entries
+ - "parf" Qualcomm specific registers
+ - "dbi" DesignWare PCIe registers
+ - "elbi" External local bus interface registers
+ - "config" PCIe configuration space
+
+- device_type:
+ Usage: required
+ Value type: <string>
+ Definition: Should be "pci". As specified in designware-pcie.txt
+
+- #address-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be 3. As specified in designware-pcie.txt
+
+- #size-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be 2. As specified in designware-pcie.txt
+
+- ranges:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: MSI interrupt
+
+- interrupt-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain "msi"
+
+- #interrupt-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be 1. As specified in designware-pcie.txt
+
+- interrupt-map-mask:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- interrupt-map:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- clocks:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and clock specifier pairs as listed
+ in clock-names property
+
+- clock-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "iface" Configuration AHB clock
+
+- clock-names:
+ Usage: required for ipq/apq8064
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "core" Clocks the pcie hw block
+ - "phy" Clocks the pcie PHY block
+- clock-names:
+ Usage: required for apq8084/ipq4019
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "aux" Auxiliary (AUX) clock
+ - "bus_master" Master AXI clock
+ - "bus_slave" Slave AXI clock
+
+- clock-names:
+ Usage: required for msm8996/apq8096
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "pipe" Pipe Clock driving internal logic
+ - "aux" Auxiliary (AUX) clock
+ - "cfg" Configuration clock
+ - "bus_master" Master AXI clock
+ - "bus_slave" Slave AXI clock
+
+- clock-names:
+ Usage: required for ipq8074
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "iface" PCIe to SysNOC BIU clock
+ - "axi_m" AXI Master clock
+ - "axi_s" AXI Slave clock
+ - "ahb" AHB clock
+ - "aux" Auxiliary clock
+
+- resets:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and reset specifier pairs as listed
+ in reset-names property
+
+- reset-names:
+ Usage: required for ipq/apq8064
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "axi" AXI reset
+ - "ahb" AHB reset
+ - "por" POR reset
+ - "pci" PCI reset
+ - "phy" PHY reset
+
+- reset-names:
+ Usage: required for apq8084
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "core" Core reset
+
+- reset-names:
+ Usage: required for ipq/apq8064
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "axi_m" AXI master reset
+ - "axi_s" AXI slave reset
+ - "pipe" PIPE reset
+ - "axi_m_vmid" VMID reset
+ - "axi_s_xpu" XPU reset
+ - "parf" PARF reset
+ - "phy" PHY reset
+ - "axi_m_sticky" AXI sticky reset
+ - "pipe_sticky" PIPE sticky reset
+ - "pwr" PWR reset
+ - "ahb" AHB reset
+ - "phy_ahb" PHY AHB reset
+
+- reset-names:
+ Usage: required for ipq8074
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ - "pipe" PIPE reset
+ - "sleep" Sleep reset
+ - "sticky" Core Sticky reset
+ - "axi_m" AXI Master reset
+ - "axi_s" AXI Slave reset
+ - "ahb" AHB Reset
+ - "axi_m_sticky" AXI Master Sticky reset
+
+- power-domains:
+ Usage: required for apq8084 and msm8996/apq8096
+ Value type: <prop-encoded-array>
+ Definition: A phandle and power domain specifier pair to the
+ power domain which is responsible for collapsing
+ and restoring power to the peripheral
+
+- vdda-supply:
+ Usage: required
+ Value type: <phandle>
+ Definition: A phandle to the core analog power supply
+
+- vdda_phy-supply:
+ Usage: required for ipq/apq8064
+ Value type: <phandle>
+ Definition: A phandle to the analog power supply for PHY
+
+- vdda_refclk-supply:
+ Usage: required for ipq/apq8064
+ Value type: <phandle>
+ Definition: A phandle to the analog power supply for IC which generates
+ reference clock
+- vddpe-3v3-supply:
+ Usage: optional
+ Value type: <phandle>
+ Definition: A phandle to the PCIe endpoint power supply
+
+- phys:
+ Usage: required for apq8084
+ Value type: <phandle>
+ Definition: List of phandle(s) as listed in phy-names property
+
+- phy-names:
+ Usage: required for apq8084
+ Value type: <stringlist>
+ Definition: Should contain "pciephy"
+
+- <name>-gpios:
+ Usage: optional
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and GPIO specifier pairs. Should contain
+ - "perst-gpios" PCIe endpoint reset signal line
+ - "wake-gpios" PCIe endpoint wake signal line
+
+* Example for ipq/apq8064
+ pcie@1b500000 {
+ compatible = "qcom,pcie-apq8064", "qcom,pcie-ipq8064", "snps,dw-pcie";
+ reg = <0x1b500000 0x1000
+ 0x1b502000 0x80
+ 0x1b600000 0x100
+ 0x0ff00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* I/O */
+ 0x82000000 0 0 0x08000000 0 0x07e00000>; /* memory */
+ interrupts = <GIC_SPI 238 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+ clocks = <&gcc PCIE_A_CLK>,
+ <&gcc PCIE_H_CLK>,
+ <&gcc PCIE_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+ resets = <&gcc PCIE_ACLK_RESET>,
+ <&gcc PCIE_HCLK_RESET>,
+ <&gcc PCIE_POR_RESET>,
+ <&gcc PCIE_PCI_RESET>,
+ <&gcc PCIE_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+ pinctrl-0 = <&pcie_pins_default>;
+ pinctrl-names = "default";
+ };
+
+* Example for apq8084
+ pcie0@fc520000 {
+ compatible = "qcom,pcie-apq8084", "snps,dw-pcie";
+ reg = <0xfc520000 0x2000>,
+ <0xff000000 0x1000>,
+ <0xff001000 0x1000>,
+ <0xff002000 0x2000>;
+ reg-names = "parf", "dbi", "elbi", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x81000000 0 0 0xff200000 0 0x00100000 /* I/O */
+ 0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
+ interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+ clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
+ <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
+ <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
+ <&gcc GCC_PCIE_0_AUX_CLK>;
+ clock-names = "iface", "master_bus", "slave_bus", "aux";
+ resets = <&gcc GCC_PCIE_0_BCR>;
+ reset-names = "core";
+ power-domains = <&gcc PCIE0_GDSC>;
+ vdda-supply = <&pma8084_l3>;
+ phys = <&pciephy0>;
+ phy-names = "pciephy";
+ perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
+ pinctrl-0 = <&pcie0_pins_default>;
+ pinctrl-names = "default";
+ };