From: Rob Herring <robh@kernel.org>
To: Naveen Kumar <mnkumar@google.com>
Cc: Mathias Nyman <mathias.nyman@intel.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
royluo@google.com, devicetree@vger.kernel.org
Subject: Re: [PATCH RESEND 2/2] dt-bindings: usb: add no-64-bit-support property
Date: Mon, 6 Nov 2023 08:44:56 -0600 [thread overview]
Message-ID: <20231106144456.GA315331-robh@kernel.org> (raw)
In-Reply-To: <20231101101625.4151442-3-mnkumar@google.com>
On Wed, Nov 01, 2023 at 10:16:25AM +0000, Naveen Kumar wrote:
> From: Naveen Kumar M <mnkumar@google.com>
>
> Add a new DT option to specify whether a host controller is able to
> support 64-bit DMA memory pointers
>
> Signed-off-by: Naveen Kumar M <mnkumar@google.com>
> ---
> Documentation/devicetree/bindings/usb/usb-xhci.yaml | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/usb-xhci.yaml b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> index 180a261c3e8f..20dc134004f3 100644
> --- a/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> +++ b/Documentation/devicetree/bindings/usb/usb-xhci.yaml
> @@ -25,6 +25,10 @@ properties:
> description: Set if the controller has broken port disable mechanism
> type: boolean
>
> + quirk-no-64-bit-support:
> + description: Set if the xHC doesn't support 64-bit DMA memory pointers
> + type: boolean
To add on to this, you can handle this with dma-ranges if you need to
limit DMA addresses to less than 32-bits.
Rob
prev parent reply other threads:[~2023-11-06 14:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-01 10:16 [PATCH RESEND 0/2] Add a quirk in xhci-plat for parent nodes to specify no 64 bit support Naveen Kumar
2023-11-01 10:16 ` [PATCH RESEND 1/2] usb: host: xhci-plat: Add quirk-no-64-bit-support Naveen Kumar
2023-11-01 10:16 ` [PATCH RESEND 2/2] dt-bindings: usb: add no-64-bit-support property Naveen Kumar
2023-11-01 10:38 ` Conor Dooley
2023-11-01 11:26 ` Krzysztof Kozlowski
2023-11-06 14:44 ` Rob Herring [this message]
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