diff mbox series

[v2,6/6] Documentation: connector: Add slow-charger-loop definition

Message ID 20210407200723.1914388-6-badhri@google.com
State New
Headers show
Series [v2,1/6] usb: typec: tcpm: Address incorrect values of tcpm psy for fixed supply | expand

Commit Message

Badhri Jagan Sridharan April 7, 2021, 8:07 p.m. UTC
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.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
---
 .../devicetree/bindings/connector/usb-connector.yaml       | 7 +++++++
 1 file changed, 7 insertions(+)

Comments

Rob Herring (Arm) April 9, 2021, 6:38 p.m. UTC | #1
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@google.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@500mA) 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

>
Badhri Jagan Sridharan April 14, 2021, 1:27 a.m. UTC | #2
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@google.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@roeck-us.net>
    Signed-off-by: Kyle Tso <kyletso@google.com>
    Link: https://lore.kernel.org/r/20210212073743.665038-1-kyletso@google.com
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Thanks,
Badhri

On Fri, Apr 9, 2021 at 11:38 AM Rob Herring <robh@kernel.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@google.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@500mA) 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
> >
diff mbox series

Patch

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@500mA) 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