On Fri 30 Aug 09:01 PDT 2019, Stephen Boyd wrote:

Quoting Jorge Ramirez (2019-08-29 00:03:48)

quoted

On 2/23/19 17:52, Bjorn Andersson wrote:

quoted

On Thu 07 Feb 03:17 PST 2019, Jorge Ramirez-Ortiz wrote:

quoted

+
+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 {

Node name should be 'connector', not usb3-c-connector.

It probably has to be usb-c-connector, because we have a
micro-usb-connector on the same board.

quoted

quoted

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.

but AFAICS we wont be able to retrieve the vbux-supply from an external
node (that interface does not exist).

rob, do you have a suggestion?

Shouldn't the vbus supply be in the phy? Or is this a situation where
the phy itself doesn't have the vbus supply going to it because the PMIC
gets in the way and handles the vbus for the connector by having the SoC
communicate with the PMIC about when to turn the vbus on and off, etc?

That's correct, the VBUS comes out of the PMIC and goes directly to the
connector.

The additional complicating factor here is that the connector is wired
to a USB2 phy as well, so we need to wire up detection and vbus control
to both of them - but I think this will be fine, if we can only figure
out a sane way of getting hold of the vbus-supply.

Regards,
Bjorn

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