Re: [PATCH 2/9] dt-bindings: phy: bcm-ns-usb3-phy: Describe the NSP variant

[Florian Fainelli <florian.fainelli@broadcom.com>]

On 10/30/26 11:21, Rob Herring wrote:
> On Wed, Oct 21, 2026 at 10:28:11AM -0700, Florian Fainelli wrote:
>> Northstar Plus uses the Northstar Bx PHY register sequence but also
>> requires coordinated USB2 and USB3 core resets and a USB2 IDM interface
>> clock enable.
>>
>> Add an NSP compatible with a required USB2 DMP phandle. Describe the
>> shared PHY relationship with EHCI, OHCI and xHCI so initialization
>> finishes before any host starts operating.
>>
>> Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
>> ---
>>   .../bindings/phy/bcm-ns-usb3-phy.yaml         | 23 +++++++++++++++++++
>>   1 file changed, 23 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml b/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml
>> index 7fd419db45d0..00d69b86cbff 100644
>> --- a/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml
>> +++ b/Documentation/devicetree/bindings/phy/bcm-ns-usb3-phy.yaml
>> @@ -14,6 +14,9 @@ description: |
>>     Known B1: BCM4707 rev 6
>>     Known C0: BCM47094 rev 0
>>   
>> +  Northstar Plus uses the Bx programming sequence, with coordinated USB2 and
>> +  USB3 resets. Its PHY is shared by the EHCI, OHCI and xHCI controllers.
>> +
>>   maintainers:
>>     - Rafał Miłecki <rafal@milecki.pl>
>>   
>> @@ -22,6 +25,7 @@ properties:
>>       enum:
>>         - brcm,ns-ax-usb3-phy
>>         - brcm,ns-bx-usb3-phy
>> +      - brcm,nsp-usb3-phy
>>   
>>     reg:
>>       description: address of MDIO bus device
>> @@ -32,6 +36,13 @@ properties:
>>       description:
>>         Phandle to the DMP (Device Management Plugin) syscon
>>   
>> +  usb2-dmp-syscon:
> 
> brcm,usb2-dmp

That would be inconsistent with the usb3-dmp-syscon property that is 
pre-existing, hence the name chosen here.
-- 
Florian