linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Badhri Jagan Sridharan <badhri@google.com>
To: Guenter Roeck <linux@roeck-us.net>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rob Herring <robh+dt@kernel.org>,
	Lee Jones <lee.jones@linaro.org>, Mark Brown <broonie@kernel.org>,
	Maxime Ripard <mripard@kernel.org>,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Thierry Reding <treding@nvidia.com>,
	Prashant Malani <pmalani@chromium.org>,
	Badhri Jagan Sridharan <badhri@google.com>
Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-usb@vger.kernel.org,
	Amelie Delaunay <amelie.delaunay@st.com>
Subject: [PATCH v10 05/15] dt-bindings: connector: Add property to set initial current cap for FRS
Date: Wed,  7 Oct 2020 23:15:46 -0700	[thread overview]
Message-ID: <20201008061556.1402293-6-badhri@google.com> (raw)
In-Reply-To: <20201008061556.1402293-1-badhri@google.com>

This change adds frs-typec-current which allows setting the initial current
capability of the new source when vSafe5V is applied during PD3.0
sink Fast Role Swap.

Signed-off-by: Badhri Jagan Sridharan <badhri@google.com>
---
Changes since v1:
- Changing patch version to v6 to fix version number confusion.

Changes since v6:
- Removed the redundant usb-connector.txt that I created by mistake.
- Moved to yaml.

Changes since v7:
- Rebase 

Changes since v8:
- Redefine new-source-frs-typec-current as string enums to address
  Rob Herring's comment.

Changes since v9:
- Removed FRS constants from usb bindings.
---
 .../bindings/connector/usb-connector.yaml     | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
index 9bd52e63c935..d9f65e81065e 100644
--- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
+++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
@@ -142,6 +142,32 @@ properties:
     required:
       - port@0
 
+  new-source-frs-typec-current:
+    description: Initial current capability of the new source when vSafe5V
+      is applied during PD3.0 Fast Role Swap. "Table 6-14 Fixed Supply PDO - Sink"
+      of "USB Power Delivery Specification Revision 3.0, Version 1.2" provides the
+      different power levels and "6.4.1.3.1.6 Fast Role Swap USB Type-C Current"
+      provides a detailed description of the field. The sink PDO from current source
+      reflects the current source's(i.e. transmitter of the FRS signal) power
+      requirement during fr swap. The current sink (i.e. receiver of the FRS signal),
+      a.k.a new source, should check if it will be able to satisfy the current source's,
+      new sink's, requirement during frswap before enabling the frs signal reception.
+      This property refers to maximum current capability that the current sink can
+      satisfy. During FRS, VBUS voltage is at 5V, as the partners are in implicit
+      contract, hence, the power level is only a function of the current capability.
+      "not-supported" implies sink to source fast role swap not supported.
+      "default" refers to default USB power level as described by
+      "Table 6-14 Fixed Supply PDO - Sink".
+      "1.5A" refers to 1.5A@5V.
+      "3.0A" refers to 3.0A@5V.
+
+    $ref: /schemas/types.yaml#/definitions/string
+    enum:
+      - not-supported
+      - default
+      - 1.5A
+      - 3.0A
+
 required:
   - compatible
 
-- 
2.28.0.806.g8561365e88-goog


  parent reply	other threads:[~2020-10-08  6:16 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-08  6:15 [PATCH v10 00/15] TCPM support for FRS and AutoDischarge Disconnect Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 01/15] usb: typec: tcpci: Add a getter method to retrieve tcpm_port reference Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 02/15] usb: typec: tcpci: Add set_vbus tcpci callback Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 03/15] dt-bindings: usb: Maxim type-c controller device tree binding document Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 04/15] usb: typec: tcpci_maxim: Chip level TCPC driver Badhri Jagan Sridharan
2020-10-08  6:15 ` Badhri Jagan Sridharan [this message]
2020-10-08  6:15 ` [PATCH v10 06/15] usb: typec: tcpm: Add support for Sink Fast Role SWAP(FRS) Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 07/15] usb: typec: tcpci: Implement callbacks for FRS Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 08/15] usb: typec: tcpci_maxim: Add support for Sink FRS Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 09/15] usb: typec: tcpm: frs sourcing vbus callback Badhri Jagan Sridharan
2020-10-19 13:40   ` Heikki Krogerus
2020-10-08  6:15 ` [PATCH v10 10/15] usb: typec: tcpci: " Badhri Jagan Sridharan
2020-10-19 13:41   ` Heikki Krogerus
2020-10-08  6:15 ` [PATCH v10 11/15] usb: typec: tcpci_max77759: Fix vbus stuck on upon diconnecting sink Badhri Jagan Sridharan
2020-10-19 13:44   ` Heikki Krogerus
2020-10-08  6:15 ` [PATCH v10 12/15] usb: typec: tcpm: Parse frs type-c current from device tree Badhri Jagan Sridharan
2020-10-08  6:15 ` [PATCH v10 13/15] usb: typec: tcpm: Implement enabling Auto Discharge disconnect support Badhri Jagan Sridharan
2020-10-19 13:48   ` Heikki Krogerus
2020-10-08  6:15 ` [PATCH v10 14/15] usb: typec: tcpci: Implement Auto discharge disconnect callbacks Badhri Jagan Sridharan
2020-10-19 13:49   ` Heikki Krogerus
2020-10-08  6:15 ` [PATCH v10 15/15] usb: typec: tcpci_maxim: Enable auto discharge disconnect Badhri Jagan Sridharan
2020-10-19 13:50   ` Heikki Krogerus
2020-10-08  7:46 ` [PATCH v10 00/15] TCPM support for FRS and AutoDischarge Disconnect Greg Kroah-Hartman
2020-10-08 17:54   ` Badhri Jagan Sridharan
2020-10-13 14:11   ` Rob Herring
2020-10-19 13:55 ` Heikki Krogerus

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20201008061556.1402293-6-badhri@google.com \
    --to=badhri@google.com \
    --cc=alexandre.belloni@bootlin.com \
    --cc=amelie.delaunay@st.com \
    --cc=broonie@kernel.org \
    --cc=devicetree@vger.kernel.org \
    --cc=gregkh@linuxfoundation.org \
    --cc=heikki.krogerus@linux.intel.com \
    --cc=lee.jones@linaro.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-usb@vger.kernel.org \
    --cc=linux@roeck-us.net \
    --cc=mripard@kernel.org \
    --cc=pmalani@chromium.org \
    --cc=robh+dt@kernel.org \
    --cc=treding@nvidia.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).