1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 $id: http://devicetree.org/schemas/pci/fsl,imx6q-pcie.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Freescale i.MX6 PCIe host controller
10 - Lucas Stach <l.stach@pengutronix.de>
11 - Richard Zhu <hongxing.zhu@nxp.com>
14 This PCIe host controller is based on the Synopsys DesignWare PCIe IP
15 and thus inherits all the common properties defined in snps,dw-pcie.yaml.
18 - $ref: /schemas/pci/snps,dw-pcie.yaml#
31 - description: Data Bus Interface (DBI) registers.
32 - description: PCIe configuration space region.
41 - description: builtin MSI controller.
50 - description: PCIe bridge clock.
51 - description: PCIe bus clock.
52 - description: PCIe PHY clock.
53 - description: Additional required clock entry for imx6sx-pcie,
62 - const: pcie_inbound_axi for imx6sx-pcie, pcie_aux for imx8mq-pcie
68 $ref: /schemas/types.yaml#/definitions/phandle
69 description: A phandle to an fsl,imx7d-pcie-phy node. Additional
70 required properties for imx7d-pcie and imx8mq-pcie.
74 - description: The phandle pointing to the DISPLAY domain for
75 imx6sx-pcie, to PCIE_PHY power domain for imx7d-pcie and
77 - description: The phandle pointing to the PCIE_PHY power domains
87 description: Phandles to PCIe-related reset lines exposed by SRC
88 IP block. Additional required by imx7d-pcie and imx8mq-pcie.
97 description: Gen1 De-emphasis value (optional required).
98 $ref: /schemas/types.yaml#/definitions/uint32
101 fsl,tx-deemph-gen2-3p5db:
102 description: Gen2 (3.5db) De-emphasis value (optional required).
103 $ref: /schemas/types.yaml#/definitions/uint32
106 fsl,tx-deemph-gen2-6db:
107 description: Gen2 (6db) De-emphasis value (optional required).
108 $ref: /schemas/types.yaml#/definitions/uint32
112 description: Gen2 TX SWING FULL value (optional required).
113 $ref: /schemas/types.yaml#/definitions/uint32
117 description: TX launch amplitude swing_low value (optional required).
118 $ref: /schemas/types.yaml#/definitions/uint32
122 description: Specify PCI Gen for link capability (optional required).
123 Note that the IMX6 LVDS clock outputs do not meet gen2 jitter
124 requirements and thus for gen2 capability a gen2 compliant clock
125 generator should be used and configured.
126 $ref: /schemas/types.yaml#/definitions/uint32
131 description: Should specify the GPIO for controlling the PCI bus device
132 reset signal. It's not polarity aware and defaults to active-low reset
133 sequence (L=reset state, H=operation state) (optional required).
135 reset-gpio-active-high:
136 description: If present then the reset sequence using the GPIO
137 specified in the "reset-gpio" property is reversed (H=reset state,
138 L=operation state) (optional required).
141 description: Should specify the regulator in charge of PCIe port power.
142 The regulator will be enabled when initializing the PCIe host and
143 disabled either as part of the init process or when shutting down
144 the host (optional required).
147 description: Should specify the regulator in charge of VPH one of
148 the three PCIe PHY powers. This regulator can be supplied by both
149 1.8v and 3.3v voltage supplies (optional required).
169 unevaluatedProperties: false
173 #include <dt-bindings/clock/imx6qdl-clock.h>
174 #include <dt-bindings/interrupt-controller/arm-gic.h>
177 compatible = "fsl,imx6q-pcie";
178 reg = <0x01ffc000 0x04000>,
179 <0x01f00000 0x80000>;
180 reg-names = "dbi", "config";
181 #address-cells = <3>;
184 bus-range = <0x00 0xff>;
185 ranges = <0x81000000 0 0 0x01f80000 0 0x00010000>,
186 <0x82000000 0 0x01000000 0x01000000 0 0x00f00000>;
188 interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
189 interrupt-names = "msi";
190 #interrupt-cells = <1>;
191 interrupt-map-mask = <0 0 0 0x7>;
192 interrupt-map = <0 0 0 1 &gpc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
193 <0 0 0 2 &gpc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
194 <0 0 0 3 &gpc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
195 <0 0 0 4 &gpc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
196 clocks = <&clks IMX6QDL_CLK_PCIE_AXI>,
197 <&clks IMX6QDL_CLK_LVDS1_GATE>,
198 <&clks IMX6QDL_CLK_PCIE_REF_125M>;
199 clock-names = "pcie", "pcie_bus", "pcie_phy";