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SubjectRe: [PATCH v4 3/4] dt-bindings: Add Qualcomm USB SuperSpeed PHY bindings
On Thu 07 Feb 03:17 PST 2019, Jorge Ramirez-Ortiz wrote:

> Binding description for Qualcomm's Synopsys 1.0.0 SuperSpeed phy
> controller embedded in QCS404.
>
> Based on Sriharsha Allenki's <sallenki@codeaurora.org> original
> definitions.
>
> Signed-off-by: Jorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
> ---
> .../bindings/phy/qcom,snps-usb-ssphy.txt | 79 +++++++++++++++++++
> 1 file changed, 79 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/qcom,snps-usb-ssphy.txt
>
> diff --git a/Documentation/devicetree/bindings/phy/qcom,snps-usb-ssphy.txt b/Documentation/devicetree/bindings/phy/qcom,snps-usb-ssphy.txt
> new file mode 100644
> index 000000000000..354e6f9cef62
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,snps-usb-ssphy.txt
> @@ -0,0 +1,79 @@
> +Qualcomm Synopsys 1.0.0 SS phy controller
> +===========================================
> +
> +Qualcomm 1.0.0 SS phy controller supports SuperSpeed USB connectivity on
> +some Qualcomm platforms.
> +
> +Required properties:
> +
> +- compatible:
> + Value type: <string>
> + Definition: Should contain "qcom,snps-usb-ssphy".

Per Rob's request make this:

Should contain "qcom,qcs404-snps-usb-ssphy" and "qcom,snps-usb-ssphy"

You can then leave the driver matching on qcom,snps-usb-ssphy for now
and if we ever find this to be incompatible with other platforms we can
make the driver match on the platform-specific compatible.

> +
> +- reg:
> + Value type: <prop-encoded-array>
> + Definition: USB PHY base address and length of the register map.
> +
> +- #phy-cells:
> + Value type: <u32>
> + Definition: Should be 0. See phy/phy-bindings.txt for details.
> +
> +- clocks:
> + Value type: <prop-encoded-array>
> + Definition: See clock-bindings.txt section "consumers". List of
> + three clock specifiers for reference, phy core and
> + pipe clocks.
> +
> +- clock-names:
> + Value type: <string>
> + Definition: Names of the clocks in 1-1 correspondence with the "clocks"
> + property. Must contain "ref", "phy" and "pipe".
> +
> +- vdd-supply:
> + Value type: <phandle>
> + Definition: phandle to the regulator VDD supply node.
> +
> +- vdda1p8-supply:
> + Value type: <phandle>
> + Definition: phandle to the regulator 1.8V supply node.
> +
> +Optional properties:
> +
> +- resets:
> + Value type: <prop-encoded-array>
> + Definition: See reset.txt section "consumers". Specifiers for COM and
> + PHY resets.
> +
> +- reset-names:
> + Value type: <string>
> + Definition: Names of the resets in 1-1 correspondence with the "resets"
> + property. Must contain "com" and "phy" if the property is
> + specified.
> +
> +Required child nodes:
> +
> +- usb connector node as defined in bindings/connector/usb-connector.txt
> + containing the property vbus-supply.
> +
> +Example:
> +
> +usb3_phy: usb3-phy@78000 {
> + compatible = "qcom,snps-usb-ssphy";
> + reg = <0x78000 0x400>;
> + #phy-cells = <0>;
> + clocks = <&rpmcc RPM_SMD_LN_BB_CLK>,
> + <&gcc GCC_USB_HS_PHY_CFG_AHB_CLK>,
> + <&gcc GCC_USB3_PHY_PIPE_CLK>;
> + clock-names = "ref", "phy", "pipe";
> + resets = <&gcc GCC_USB3_PHY_BCR>,
> + <&gcc GCC_USB3PHY_PHY_BCR>;
> + reset-names = "com", "phy";
> + vdd-supply = <&vreg_l3_1p05>;
> + vdda1p8-supply = <&vreg_l5_1p8>;
> + usb3_c_connector: usb3-c-connector {

The USB-C connector is attached both to the HS and SS PHYs, so I think
you should represent this external to this node and use of_graph to
query it.

So the connector should look similar to example 2 in
connector/usb-connector.txt.

Regards,
Bjorn

> + compatible = "usb-c-connector";
> + label = "USB-C";
> + type = "micro";
> + vbus-supply = <&usb3_vbus_reg>;
> + };
> +};
> --
> 2.20.1
>

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