[PATCH 1/2] dt: bindings: add allwinner, otg-routed property for phy-sun4i-usb

[icenowy@aosc.xyz (Icenowy Zheng)]

21.09.2016, 15:10, "Hans de Goede" <hdegoede@redhat.com>:
> Hi,
>
> On 09/21/2016 10:04 AM, Icenowy Zheng wrote:
>> ?On some newer Allwinner SoCs (H3 or A64), the PHY0 can be either routed to
>> ?the MUSB controller (which is an OTG controller) or the OHCI/EHCI pair
>> ?(which is a Host-only controller, but more stable and easy to implement).
>>
>> ?This property marks whether on a certain board which controller should be
>> ?attached to the PHY.
>>
>> ?Signed-off-by: Icenowy Zheng <icenowy@aosc.xyz>
>
> Erm, I think that the idea here is to dynamically switch the routing
> based on the id-pin of the otg connector. IOW use the musb controller
> for device mode, and the ehci/ohci proper for proper host support
> when in host mode.

At least on some boards this implementation works...

(I mean Pine64, which has two USB-A connectors)

>
> Regards,
>
> Hans
>
>> ?---
>> ??Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt | 7 +++++++
>> ??1 file changed, 7 insertions(+)
>>
>> ?diff --git a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
>> ?index 287150d..5c11d57 100644
>> ?--- a/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
>> ?+++ b/Documentation/devicetree/bindings/phy/sun4i-usb-phy.txt
>> ?@@ -36,6 +36,13 @@ Optional properties:
>> ??- usb1_vbus-supply : regulator phandle for controller usb1 vbus
>> ??- usb2_vbus-supply : regulator phandle for controller usb2 vbus
>>
>> ?+Optional properties for H3 or A64 SoCs:
>> ?+- allwinner,otg-routed : USB0 (OTG) PHY is routed to OHCI/EHCI pair rather than
>> ?+ MUSB. (boolean, if this property is set, the OHCI/EHCI
>> ?+ controllers at PHY0 should be enabled and the MUSB
>> ?+ controller must *NOT* be enabled, and thus the PHY can
>> ?+ only work in host mode)
>> ?+
>> ??Example:
>> ??????????usbphy: phy at 0x01c13400 {
>> ??????????????????#phy-cells = <1>;