Hi Andrew, On Tue, Apr 07, 2015 at 03:04:16PM -0700, Andrew Bresticker wrote: > Add a binding document for the USB2.0 PHY found on the IMG Pistachio SoC. > > Signed-off-by: Andrew Bresticker <[email protected]> > Cc: Rob Herring <[email protected]> > Cc: Pawel Moll <[email protected]> > Cc: Mark Rutland <[email protected]> > Cc: Ian Campbell <[email protected]> > Cc: Kumar Gala <[email protected]> > --- > No changes from v1. > --- > .../devicetree/bindings/phy/pistachio-usb-phy.txt | 29 > ++++++++++++++++++++++ > include/dt-bindings/phy/phy-pistachio-usb.h | 16 ++++++++++++ > 2 files changed, 45 insertions(+) > create mode 100644 > Documentation/devicetree/bindings/phy/pistachio-usb-phy.txt > create mode 100644 include/dt-bindings/phy/phy-pistachio-usb.h > > diff --git a/Documentation/devicetree/bindings/phy/pistachio-usb-phy.txt > b/Documentation/devicetree/bindings/phy/pistachio-usb-phy.txt > new file mode 100644 > index 0000000..afbc7e2 > --- /dev/null > +++ b/Documentation/devicetree/bindings/phy/pistachio-usb-phy.txt > @@ -0,0 +1,29 @@ > +IMG Pistachio USB PHY > +===================== > + > +Required properties: > +-------------------- > + - compatible: Must be "img,pistachio-usb-phy". > + - #phy-cells: Must be 0. See ./phy-bindings.txt for details. > + - clocks: Must contain an entry for each entry in clock-names. > + See ../clock/clock-bindings.txt for details. > + - clock-names: Must include "usb_phy". > + - img,cr-top: Must constain a phandle to the CR_TOP syscon node. > + - img,refclk: Indicates the reference clock source for the USB PHY. > + See <dt-bindings/phy/phy-pistachio-usb.h> for a list of valid values.
Possibly dumb question: why isn't the reference clock source specified
in the normal ways like the "usb_phy" clock is?
Does the value required here depend on what usb_phy clock gets muxed
from or something?
Cheers
James
> +
> +Optional properties:
> +--------------------
> + - phy-supply: USB VBUS supply. Must supply 5.0V.
> +
> +Example:
> +--------
> +usb_phy: usb-phy {
> + compatible = "img,pistachio-usb-phy";
> + clocks = <&clk_core CLK_USB_PHY>;
> + clock-names = "usb_phy";
> + phy-supply = <&usb_vbus>;
> + img,refclk = <REFCLK_CLK_CORE>;
> + img,cr-top = <&cr_top>;
> + #phy-cells = <0>;
> +};
> diff --git a/include/dt-bindings/phy/phy-pistachio-usb.h
> b/include/dt-bindings/phy/phy-pistachio-usb.h
> new file mode 100644
> index 0000000..d1877aa
> --- /dev/null
> +++ b/include/dt-bindings/phy/phy-pistachio-usb.h
> @@ -0,0 +1,16 @@
> +/*
> + * Copyright (C) 2015 Google, Inc.
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + */
> +
> +#ifndef _DT_BINDINGS_PHY_PISTACHIO
> +#define _DT_BINDINGS_PHY_PISTACHIO
> +
> +#define REFCLK_XO_CRYSTAL 0x0
> +#define REFCLK_X0_EXT_CLK 0x1
> +#define REFCLK_CLK_CORE 0x2
> +
> +#endif /* _DT_BINDINGS_PHY_PISTACHIO */
> --
> 2.2.0.rc0.207.ga3a616c
>
>
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