linux-kernel - Re: [PATCH v2 6/6] Documentation: connector: Add slow-charger-loop definition

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Date:   Tue, 13 Apr 2021 18:27:31 -0700
From:   Badhri Jagan Sridharan <badhri@...gle.com>
To:     Rob Herring <robh@...nel.org>
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>,
        USB <linux-usb@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Kyle Tso <kyletso@...gle.com>
Subject: Re: [PATCH v2 6/6] Documentation: connector: Add slow-charger-loop definition

Hi Rob,

Have clarified "slow charger loops" and pSnkStby in my V3 of the patch
and have updated the subject as well.
I was actually doing a git log where the last one showed up with the
following commit description.

commit 4b59b60d896f3ed94921974e916db091bc3a9ba8
Author: Kyle Tso <kyletso@...gle.com>
Date:   Fri Feb 12 15:37:43 2021 +0800

    Documentation: connector: Update the description of sink-vdos

    Remove the acronym "VDM" and replace it with the full name "Vendor
    Defined Message".

    Reviewed-by: Guenter Roeck <linux@...ck-us.net>
    Signed-off-by: Kyle Tso <kyletso@...gle.com>
    Link: https://lore.kernel.org/r/20210212073743.665038-1-kyletso@google.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

Thanks,
Badhri

On Fri, Apr 9, 2021 at 11:38 AM Rob Herring <robh@...nel.org> wrote:
>
> 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
> >