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Date:   Fri, 14 Jun 2019 10:30:39 -0600
From:   Rob Herring <>
To:     Marek Szyprowski <>
        Greg Kroah-Hartman <>,
        Bartlomiej Zolnierkiewicz <>,
        Markus Reichl <>,
        Måns Rullgård <>,
        Krzysztof Kozlowski <>,
        Peter Chen <>,
        Alan Stern <>
Subject: Re: [PATCH 1/5] dt-bindings: switch Exynos EHCI/OHCI bindings to use
 array of generic PHYs

On Tue, May 21, 2019 at 01:58:45PM +0200, Marek Szyprowski wrote:
> Commit 69bec7259853 ("USB: core: let USB device know device node") added
> support for attaching devicetree node for USB devices. Those nodes are
> children of their USB host controller. However Exynos EHCI and OHCI
> driver bindings already define child-nodes for each physical root hub
> port and assigns respective PHY controller and parameters to them. This
> leads to the conflict. A workaround for it has been merged as commit
> 01d4071486fe ("usb: exynos: add workaround for the USB device bindings
> conflict"), but it disabled support for USB device binding for Exynos
> EHCI/OHCI controllers.
> To resolve it properly, lets move PHYs from the sub-nodes to a standard
> array under the 'phys' property.
> Suggested-by: Måns Rullgård <>
> Signed-off-by: Marek Szyprowski <>
> ---
>  .../devicetree/bindings/usb/exynos-usb.txt    | 41 +++++++------------
>  1 file changed, 14 insertions(+), 27 deletions(-)

Reviewed-by: Rob Herring <>

The old way would also conflict with the usb-connector binding as that 
uses the graph binding.


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