Dne četrtek, 10. november 2022 ob 01:55:07 CET je Andre Przywara napisal(a):
> As many other Allwinner SoCs from the last years, the first USB host
> controller pair in the Allwinner H3 and H5 chips share a USB PHY with
> the MUSB OTG controller. This is probably the reason why we didn't have
> a "phys" property in those host controller nodes.
> This works fine as long as the MUSB controller driver is loaded, as this
> takes care of the proper PHY setup, including the muxing between MUSB
> and the HCI.
>
> However this requires the MUSB driver to be enabled and loaded, and also
> upsets U-Boot, which cannot use a HCI port without a "phys" property.
>
> Similar to what we did in commit cc72570747e4 ("arm64: dts: allwinner:
> A64: properly connect USB PHY to port 0"), add the "phys" property to
> the OHCI0 and EHCI0 DT nodes in the shared H3/H5 .dtsi file.
>
> This is not only the proper description of the hardware, but also avoids
> a nasty error message in U-Boot triggered by a recent patch. (The port
> never worked in host mode, but the error was suppressed due to a bug.)
>
> When using the MUSB port in OTG mode, this also fixes host mode
> switching, so people can use OTG adapters to connect a USB device to
> port 0.
>
> Signed-off-by: Andre Przywara <andre.przywara@xxxxxxx>
Acked-by: Jernej Skrabec <jernej.skrabec@xxxxxxxxx>
Best regards,
Jernej
