From: Rob Herring <robh@kernel.org>
To: Roger Quadros <rogerq@ti.com>
Cc: kishon@ti.com, aniljoy@cadence.com, adouglas@cadence.com,
nsekhar@ti.com, jsarha@ti.com, linux-kernel@vger.kernel.org,
devicetree@vger.kernel.org, Roger Quadros <rogerq@ti.com>,
Rob Herring <robh@kernel.org>
Subject: Re: [PATCH v4 2/3] dt-bindings: phy: ti,phy-j721e-wiz: Add Type-C dir GPIO
Date: Mon, 4 Nov 2019 19:28:45 -0600 [thread overview]
Message-ID: <20191105012845.GA32522@bogus> (raw)
In-Reply-To: <20191028102153.24866-3-rogerq@ti.com>
On Mon, 28 Oct 2019 12:21:52 +0200, Roger Quadros wrote:
> This is an optional GPIO, if specified will be used to
> swap lane 0 and lane 1 based on GPIO status. This is required
> to achieve plug flip support for USB Type-C.
>
> Type-C companions typically need some time after the cable is
> plugged before and before they reflect the correct status of
> Type-C plug orientation on the DIR line.
>
> Type-C Spec specifies CC attachment debounce time (tCCDebounce)
> of 100 ms (min) to 200 ms (max).
>
> Allow the DT node to specify the time (in ms) that we need
> to wait before sampling the DIR line.
>
> Signed-off-by: Roger Quadros <rogerq@ti.com>
> Cc: Rob Herring <robh@kernel.org>
> ---
> .../bindings/phy/ti,phy-j721e-wiz.yaml | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2019-11-05 1:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-28 10:21 [PATCH v4 0/3] phy: cadence: j721e-wiz: Add Type-C plug flip support Roger Quadros
2019-10-28 10:21 ` [PATCH v4 1/3] phy: cadence: Sierra: add phy_reset hook Roger Quadros
2019-10-28 10:21 ` [PATCH v4 2/3] dt-bindings: phy: ti,phy-j721e-wiz: Add Type-C dir GPIO Roger Quadros
2019-11-05 1:28 ` Rob Herring [this message]
2019-10-28 10:21 ` [PATCH v4 3/3] phy: ti: j721e-wiz: Manage typec-gpio-dir Roger Quadros
2019-12-09 9:49 ` [PATCH v4 0/3] phy: cadence: j721e-wiz: Add Type-C plug flip support Roger Quadros
2020-01-06 6:34 ` Kishon Vijay Abraham I
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