[PATCH 2/3] phy: Add driver for ST-Ericsson AB8500 USB PHY

[Linus Walleij]

On Mon, Jul 5, 2021 at 6:28 PM Stephan Gerhold <stephan at gerhold.net> wrote:

> The AB8500 PMIC contains an USB PHY that needs to be set up in
> device or host mode to make USB work properly. Add a simple driver
> for the generic PHY uclass that allows enabling it.
>
> The if (CONFIG_IS_ENABLED(USB_MUSB_HOST)) might be a bit strange.
> The USB PHY must be configured in either host or device mode and
> somehow the USB PHY driver must be made aware of the mode.
>
> Actually, the MUSB driver used together with this PHY does not
> support dynamic selection of host/device mode in U-Boot at the moment.
> Therefore, one very simple approach that works fine is to select
> the mode to configure at compile time. When the MUSB driver is
> configured in host mode the PHY is configured in host mode, and
> similarly when the MUSB driver is configured in device/gadget mode.
>
> Cc: Linus Walleij <linus.walleij at linaro.org>
> Signed-off-by: Stephan Gerhold <stephan at gerhold.net>

FWIW:
Reviewed-by: Linus Walleij <linus.walleij at linaro.org>

Yours,
Linus Walleij