From: Parth Pancholi <parth.pancholi@xxxxxxxxxxx> Add device tree bindings for TI's TUSB73x0 PCIe-to-USB 3.0 xHCI host controller. The controller supports software configuration through PCIe registers, such as controlling the PWRONx polarity via the USB control register (E0h). Similar generic PCIe-based bindings can be found as qcom,ath11k-pci.yaml as an example. Datasheet: https://www.ti.com/lit/ds/symlink/tusb7320.pdf Signed-off-by: Parth Pancholi <parth.pancholi@xxxxxxxxxxx> Signed-off-by: Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> --- v3: use lowercase hex in compatible v2: rename property to ti,tusb7320-pwron-active-high and change type to flag --- .../bindings/usb/ti,tusb73x0-pci.yaml | 60 +++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml diff --git a/Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml b/Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml new file mode 100644 index 000000000000..7083e24d279c --- /dev/null +++ b/Documentation/devicetree/bindings/usb/ti,tusb73x0-pci.yaml @@ -0,0 +1,60 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/usb/ti,tusb73x0-pci.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: TUSB73x0 USB 3.0 xHCI Host Controller (PCIe) + +maintainers: + - Francesco Dolcini <francesco.dolcini@xxxxxxxxxxx> + +description: + TUSB73x0 USB 3.0 xHCI Host Controller via PCIe x1 Gen2 interface. + The TUSB7320 supports up to two downstream ports, the TUSB7340 supports up + to four downstream ports. + +properties: + compatible: + const: pci104c,8241 + + reg: + maxItems: 1 + + ti,tusb7320-pwron-active-high: + $ref: /schemas/types.yaml#/definitions/flag + description: + Configure the polarity of the PWRONx# signals. When this is present, the PWRONx# + pins are active high and their internal pull-down resistors are disabled. + When this is absent, the PWRONx# pins are active low (default) and their internal + pull-down resistors are enabled. + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + pcie { + #address-cells = <3>; + #size-cells = <2>; + + pcie@0 { + device_type = "pci"; + reg = <0x0 0x0 0x0 0x0 0x0>; + bus-range = <0x01 0xff>; + + #address-cells = <3>; + #size-cells = <2>; + ranges; + + usb@0 { + compatible = "pci104c,8241"; + reg = <0x10000 0x0 0x0 0x0 0x0>; + + ti,tusb7320-pwron-active-high; + }; + }; + }; -- 2.39.5
