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Message-ID: <20210409183803.GA3928012@robh.at.kernel.org>
Date: Fri, 9 Apr 2021 13:38:03 -0500
From: Rob Herring <robh@...nel.org>
To: Badhri Jagan Sridharan <badhri@...gle.com>
Cc: Guenter Roeck <linux@...ck-us.net>,
Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Adam Thomson <Adam.Thomson.Opensource@...semi.com>,
linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
devicetree@...r.kernel.org, Kyle Tso <kyletso@...gle.com>
Subject: Re: [PATCH v2 6/6] Documentation: connector: Add slow-charger-loop
definition
On Wed, Apr 07, 2021 at 01:07:23PM -0700, Badhri Jagan Sridharan wrote:
> To allow slow charger loops to comply to pSnkStby requirement,
> this patch introduces slow-charger-loop which when set makes
> the port request PD_P_SNK_STDBY_MW upon entering SNK_DISCOVERY
> (instead of 3A or the 1.5A during SNK_DISCOVERY) and the actual
> currrent limit after RX of PD_CTRL_PSRDY for PD link or during
> SNK_READY for non-pd link.
What are 'slow charger loops' and pSnkStby?
'dt-bindings: connector: ...' for the subject. Follow the pattern you
see with 'git log --oneline' for a directory.
>
> Signed-off-by: Badhri Jagan Sridharan <badhri@...gle.com>
> ---
> .../devicetree/bindings/connector/usb-connector.yaml | 7 +++++++
> 1 file changed, 7 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> index b6daedd62516..09ad3ad983a6 100644
> --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
> +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
> @@ -197,6 +197,13 @@ properties:
> $ref: /schemas/types.yaml#/definitions/uint32
> enum: [1, 2, 3]
>
> + slow-charger-loop:
> + description: Allows slow charging loops to comply to pSnkStby. When set makes
> + the port request pSnkStby(2.5W - 5V@...mA) upon entering SNK_DISCOVERY(instead
> + of 3A or the 1.5A during SNK_DISCOVERY) and the actual currrent limit after
> + reception of PS_Ready for PD link or during SNK_READY for non-pd link.
> + type: boolean
> +
> required:
> - compatible
>
> --
> 2.31.1.295.g9ea45b61b8-goog
>
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