Hi Krzysztof,
On 3/16/25 9:49 AM, Krzysztof Kozlowski wrote:
On 15/03/2025 01:56, Amit Sunil Dhamne wrote:
Hi Krzysztof,
On 3/13/25 1:48 AM, Krzysztof Kozlowski wrote:
On Wed, Mar 12, 2025 at 04:42:01PM -0700, Amit Sunil Dhamne wrote:
Add a new "fixed-batteries" DT property to connector class. This
property is populated with nodes associated with battery type power
supplies powering the USB PD connector. This is needed by the Type-C
Port Manager (TCPM) to query psy properties which are used to feed
What is "psy" in terms of bindings?
In terms of bindings this should be a phandle to a device that
owns/manages the battery (whose driver will eventually call
devm_power_supply_register to register the battery). This could be a
So a charger? Please rephrain from putting Linux names into the bindings
description.
Noted, thanks!
fuel-guage ("sprd,sc2731-fgu", say), charger ("ti,bq24190") or a
platform device ("cw2015") containing "monitored-battery" property to
manage the simple battery.
Battery_Status & Battery_Capacity AMS.
Signed-off-by: Amit Sunil Dhamne <amitsd@xxxxxxxxxx>
---
Documentation/devicetree/bindings/connector/usb-connector.yaml | 8 ++++++++
Documentation/devicetree/bindings/usb/maxim,max33359.yaml | 1 +
2 files changed, 9 insertions(+)
diff --git a/Documentation/devicetree/bindings/connector/usb-connector.yaml b/Documentation/devicetree/bindings/connector/usb-connector.yaml
index 11e40d225b9f3a0d0aeea7bf764f1c00a719d615..5e15bc060f5a2cfce842f83de738f1e8bae3ce2d 100644
--- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
+++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
@@ -300,6 +300,14 @@ properties:
$ref: /schemas/types.yaml#/definitions/uint8-array
maxItems: 4
+ fixed-batteries:
+ description: Contains references to nodes associated with battery type power
+ supplies powering the USB PD device. These batteries are fixed type and
What is a "battery type power supply"? If you just link here batteries,
then we have type for it - monitored-battery - but I doubt connector has
direct connection to the battery.
Regarding "nodes associated with battery type power supplies", I meant
something like a fuel guage or a charger OR platform device with
"monitored-battery" that will manage the battery lifecycle. If I use
monitored-battery for this, I will be restricted to only querying 1
simple battery. Also, I don't mean PD connector device to be a fuel
guage or charger that manages a specific battery. It should just be able
to query any FG/Chg for the battery status to relay that info to the
connector's port partner.
The intent of the patchset & this change is for the USB Type C protocol
manager module (that consumes these bindings) to be able to get info
The intent should be rather to accurately describe hardware and maybe
that's the problem - you focus how to bend it for your drivers.
Acknowledged!
Thanks,
Amit
Best regards,
Krzysztof
