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Message-ID: <20180205023654.77yq7j22ovby2ql5@rob-hp-laptop>
Date: Mon, 5 Feb 2018 00:07:35 -0600
From: Rob Herring <robh@...nel.org>
To: Joel Stanley <joel@....id.au>
Cc: Mark Rutland <mark.rutland@....com>, devicetree@...r.kernel.org,
Christopher Bostic <cbostic@...ux.vnet.ibm.com>,
Jeremy Kerr <jk@...abs.org>,
Eddie James <eajames@...ux.vnet.ibm.com>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: fsi: Add optional property
no-scan-on-init
On Tue, Jan 30, 2018 at 04:21:15PM +1030, Joel Stanley wrote:
> From: Christopher Bostic <cbostic@...ux.vnet.ibm.com>
>
> Add an optional FSI master property 'no-scan-on-init. This
> can be specified to indicate that a master should not be
> automatically scanned at init time. This is required in cases
> where a scan could interfere with another FSI master on the same
> bus.
>
> Signed-off-by: Christopher Bostic <cbostic@...ux.vnet.ibm.com>
> Acked-by: Jeremy Kerr <jk@...abs.org>
> Signed-off-by: Joel Stanley <joel@....id.au>
> ---
> Documentation/devicetree/bindings/fsi/fsi.txt | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/fsi/fsi.txt b/Documentation/devicetree/bindings/fsi/fsi.txt
> index 4eaf488d4015..ab516c673a4b 100644
> --- a/Documentation/devicetree/bindings/fsi/fsi.txt
> +++ b/Documentation/devicetree/bindings/fsi/fsi.txt
> @@ -56,6 +56,13 @@ addresses (link index and slave ID), and no size:
> #address-cells = <2>;
> #size-cells = <0>;
>
> +An optional boolean property can be added to indicate that a particular master
> +should not scan for connected devices at initialization time. This is
> +necessary in cases where a scan could cause arbitration issues with other
> +masters that may be present on the bus.
> +
> + no-scan-on-init;
> +
The formatting here is a bit strange compared to most bindings, but no
point in reformatting the document to add one property.
Reviewed-by: Rob Herring <robh@...nel.org>
Rob
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