[PATCH 1/4] ARM: aspeed: g4: Add USB functions to pinctrl bindings

Rob Herring
2017-06-29T20:12:25Z

On Tue, Jun 27, 2017 at 11:42:11AM +0930, Andrew Jeffery wrote:
> The AST2400 contains several USB controllers:
>
> * USB 1.1 Host Controller
> * USB 2.0 Host Controller
> * Combined USB 2.0 Virtual Hub and USB 1.1 HID Controller
>
> Pins for three ports are routed to the three controllers such that:
>
> * Port 1 is a dedicated USB 1.1 host port
> * Port 2 is shared between the USB 1.1 host and HID controllers
> * Port 3 is shared between the USB 2.0 host and Hub controllers
>
> As the pins for port 1 are fixed function there is no associated mux
> function or group described in the bindings. Ports 2 and 3 are muxed as
> above, and the table below describes the mapping between pinmux function
> names and ports:
>
> Port | USB Version | USB Mode | Mux Function
> ------|--------------|-----------|-------------
> 1 | 1.1 | Host | -
> 2 | 1.1 | Host | USB11H2
> 2 | 1.1 | Device | USB11D1
> 3 | 2.0 | Host | USB2H1
> 3 | 2.0 | Device | USB2D1
>
> Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
> ---
> Documentation/devicetree/bindings/pinctrl/pinctrl-aspeed.txt | 5 +++--
> 1 file changed, 3 insertions(+), 2 deletions(-)

Acked-by: Rob Herring <robh@kernel.org>