[PATCH v2 5/5] dt-bindings: usb: dwc3-imx8mp: add imx8mp dwc3 glue bindings
Rob Herring
robh at kernel.org
Mon Jul 13 23:00:01 EDT 2020
On Mon, Jul 06, 2020 at 05:44:59PM +0800, Li Jun wrote:
> NXP imx8mp integrates 2 dwc3 3.30b IP and add some wakeup logic
> to support low power mode, the glue layer is for this wakeup
> functionality, which has a separated interrupt, can support
> wakeup from U3 and connect events for host, and vbus wakeup for
> device.
>
> Signed-off-by: Li Jun <jun.li at nxp.com>
> ---
> .../devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml | 87 ++++++++++++++++++++++
> 1 file changed, 87 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml b/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
> new file mode 100644
> index 0000000..823db058
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/fsl,imx8mp-dwc3.yaml
> @@ -0,0 +1,87 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (c) 2020 NXP
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/fsl,imx8mp-dwc3.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NXP iMX8MP Soc USB Controller
> +
> +maintainers:
> + - Li Jun <jun.li at nxp.com>
> +
> +properties:
> + compatible:
> + items:
> + - const: fsl,imx8mp-dwc3
> +
> + reg:
> + maxItems: 1
> + description: Address and length of the register set for the wrapper of
> + dwc3 core on the SOC.
> +
> + "#address-cells":
> + enum: [ 1, 2 ]
> +
> + "#size-cells":
> + enum: [ 1, 2 ]
> +
> + interrupts:
> + maxItems: 1
> + description: The interrupt that is asserted when a wakeup event is
> + received.
> +
> + clocks:
> + description:
> + A list of phandle and clock-specifier pairs for the clocks
> + listed in clock-names.
> + items:
> + - description: system hsio root clock.
> + - description: system bus AXI clock.
> + - description: suspend clock, used for wakeup logic.
> +
> + clock-names:
> + items:
> + - const: hsio
> + - const: bus
> + - const: suspend
> +
> +# Required child node:
> +
> + dwc3:
Needs to be a pattern with the unit-address.
> + description: This is the node representing the DWC3 controller instance
> + Documentation/devicetree/bindings/usb/dwc3.txt
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
Pretty sure you need a few more properties here...
Add:
additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/clock/imx8mp-clock.h>
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + usb3_0: usb at 32f10100 {
> + compatible = "fsl,imx8mp-dwc3";
> + reg = <0x32f10100 0x8>;
> + clocks = <&clk IMX8MP_CLK_HSIO_ROOT>,
> + <&clk IMX8MP_CLK_HSIO_AXI_DIV>,
> + <&clk IMX8MP_CLK_USB_ROOT>;
> + clock-names = "hsio", "bus", "suspend";
> + assigned-clocks = <&clk IMX8MP_CLK_HSIO_AXI_SRC>;
> + assigned-clock-parents = <&clk IMX8MP_SYS_PLL2_500M>;
> + assigned-clock-rates = <500000000>;
> + interrupts = <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>;
> + #address-cells = <1>;
> + #size-cells = <1>;
> + ranges;
> +
> + dwc3 at 38100000 {
> + compatible = "snps,dwc3";
> + reg = <0x38100000 0x10000>;
> + interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
> + phys = <&usb3_phy0>, <&usb3_phy0>;
> + phy-names = "usb2-phy", "usb3-phy";
> + };
> + };
> --
> 2.7.4
>
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