linux-kernel - Re: [PATCH V0 1/7] dt-bindings: connector: Add property for eud type c connector

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Message-ID: <b3d10d7b874c11462604a5f78bc0e8cf@codeaurora.org>
Date:   Tue, 05 Oct 2021 18:41:47 +0530
From:   schowdhu@...eaurora.org
To:     Rob Herring <robh@...nel.org>
Cc:     linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org,
        devicetree@...r.kernel.org,
        Bryan O'Donoghue <pure.logic@...us-software.ie>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Greg KH <greg@...ah.com>, linux-kernel@...r.kernel.org,
        ckadabi@...eaurora.org, tsoni@...eaurora.org,
        bryanh@...eaurora.org, psodagud@...eaurora.org,
        satyap@...eaurora.org, pheragu@...eaurora.org,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Sibi Sankar <sibis@...eaurora.org>,
        Sai Prakash Ranjan <saiprakash.ranjan@...eaurora.org>
Subject: Re: [PATCH V0 1/7] dt-bindings: connector: Add property for eud type
 c connector

On 2021-10-04 22:07, Rob Herring wrote:
> On Mon, Oct 04, 2021 at 04:46:19PM +0530, Souradeep Chowdhury wrote:
>> Added the property for EUD(Embedded USB Debug) connector.Added
>> the "reg" and "interrupts" property which is needed for EUD.
> 
> You are going to need a better explanation of this h/w.

Ack. Will update this with the detailed hardware description
in the next version.

> 
>> 
>> Signed-off-by: Souradeep Chowdhury <schowdhu@...eaurora.org>
>> ---
>>  .../devicetree/bindings/connector/usb-connector.yaml      | 15 
>> +++++++++++++++
>>  1 file changed, 15 insertions(+)
>> 
>> diff --git 
>> a/Documentation/devicetree/bindings/connector/usb-connector.yaml 
>> b/Documentation/devicetree/bindings/connector/usb-connector.yaml
>> index 7eb8659..908129f 100644
>> --- a/Documentation/devicetree/bindings/connector/usb-connector.yaml
>> +++ b/Documentation/devicetree/bindings/connector/usb-connector.yaml
>> @@ -30,6 +30,21 @@ properties:
>>            - const: samsung,usb-connector-11pin
>>            - const: usb-b-connector
>> 
>> +      - items:
>> +          - enum:
>> +              - qcom,sc7280-usb-connector-eud
>> +          - const: qcom,usb-connector-eud
>> +          - const: usb-c-connector
>> +
>> +  reg:
>> +    items:
>> +      - description: EUD Base Register Region
>> +      - description: EUD Mode Manager Region
> 
> A connector node represents the physical connector on a board. That
> can't really be an MMIO peripheral. Maybe you need a node for EUD and
> then it should have a connector child node? Don't really know without
> understanding this h/w.

As per the previous discussion on the EUD, it was agreed upon to map EUD
as a type C connector and use Role-Switch to change the USB role instead
of extcon interface that was being used previously. The link for the 
same
is as follows:-

https://lore.kernel.org/lkml/5db1a666-62ec-c850-6626-ad33d337b452@codeaurora.org/

> 
>> +
>> +  interrupts:
>> +    description:
>> +      EUD interrupt
>> +
>>    label:
>>      description: Symbolic name for the connector.
>> 
>> --
>> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a 
>> member
>> of Code Aurora Forum, hosted by The Linux Foundation
>> 
>>