linux-kernel - Re: [PATCH v2 3/3] dt-bindings: serial: 8250: add aspeed,sirq-active-high

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Message-ID: <YGVSrCo7mVkSJTeQ@hatter.bewilderbeest.net>
Date:   Wed, 31 Mar 2021 23:57:16 -0500
From:   Zev Weiss <zev@...ilderbeest.net>
To:     Andrew Jeffery <andrew@...id.au>
Cc:     Joel Stanley <joel@....id.au>, openbmc@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-aspeed@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Lubomir Rintel <lkundrak@...sk>,
        - <devicetree@...r.kernel.org>, linux-serial@...r.kernel.org
Subject: Re: [PATCH v2 3/3] dt-bindings: serial: 8250: add
 aspeed,sirq-active-high

On Wed, Mar 31, 2021 at 11:04:44PM CDT, Andrew Jeffery wrote:
>
>
>On Thu, 1 Apr 2021, at 11:27, Zev Weiss wrote:
>> This provides a simpler, more direct alternative to the deprecated
>> aspeed,sirq-polarity-sense property for indicating the polarity of
>> the Aspeed VUART's SIRQ line.
>>
>> Signed-off-by: Zev Weiss <zev@...ilderbeest.net>
>> ---
>>  Documentation/devicetree/bindings/serial/8250.yaml | 13 ++++++++++---
>>  1 file changed, 10 insertions(+), 3 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/serial/8250.yaml
>> b/Documentation/devicetree/bindings/serial/8250.yaml
>> index 491b9297432d..e79bb6ab9d2c 100644
>> --- a/Documentation/devicetree/bindings/serial/8250.yaml
>> +++ b/Documentation/devicetree/bindings/serial/8250.yaml
>> @@ -12,8 +12,9 @@ maintainers:
>>  allOf:
>>    - $ref: /schemas/serial.yaml#
>>    - if:
>> -      required:
>> -        - aspeed,sirq-polarity-sense
>> +      anyOf:
>> +        - required: [ aspeed,sirq-active-high ]
>
>Do you think we could make use of the approach I put forward here?
>
>https://lore.kernel.org/openbmc/20210319062752.145730-18-andrew@aj.id.au/T/#u
>
>Andrew

If you mean using a u32 property (say aspeed,sirq-polarity) with an 
explicit IRQ_TYPE_LEVEL_{LOW,HIGH} instead of a present/absent bool,
sure, I guess that seems like a somewhat clearer, more orthogonal 
arrangement.


Zev