linux-kernel - Re: [PATCH v3 06/10] dt-bindings: pinctrl: mediatek,mt6779-pinctrl: Add MT6795

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Message-ID: <c34ccb61-8a8d-1d44-35f0-1433eceb3e9c@collabora.com>
Date:   Fri, 21 Oct 2022 10:19:07 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Yassine Oudjana <yassine.oudjana@...il.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Sean Wang <sean.wang@...nel.org>,
        Andy Teng <andy.teng@...iatek.com>,
        Yassine Oudjana <y.oudjana@...tonmail.com>,
        linux-mediatek@...ts.infradead.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 06/10] dt-bindings: pinctrl: mediatek,mt6779-pinctrl:
 Add MT6795

Il 20/10/22 14:21, Krzysztof Kozlowski ha scritto:
> On 20/10/2022 07:36, Yassine Oudjana wrote:
>>
>> On Mon, Oct 10 2022 at 07:24:59 -04:00:00, Krzysztof Kozlowski
>> <krzysztof.kozlowski@...aro.org> wrote:
>>> On 07/10/2022 08:59, Yassine Oudjana wrote:
>>>>   From: Yassine Oudjana <y.oudjana@...tonmail.com>
>>>>
>>>>   Combine MT6795 pin controller document into MT6779 one. In the
>>>>   process, replace the current interrupts property description with
>>>>   the one from the MT6795 document since it makes more sense. Also
>>>>   amend property descriptions and examples with more detailed
>>>>   information that was available in the MT6795 document, and replace
>>>>   the current pinmux node name patterns with ones from it since they
>>>>   are more common across mediatek pin controller bindings.
>>>>
>>>>   Signed-off-by: Yassine Oudjana <y.oudjana@...tonmail.com>
>>>>   ---
>>>>    .../pinctrl/mediatek,mt6779-pinctrl.yaml      |  94 ++++++--
>>>>    .../pinctrl/mediatek,pinctrl-mt6795.yaml      | 227
>>>> ------------------
>>>>    2 files changed, 77 insertions(+), 244 deletions(-)
>>>>    delete mode 100644
>>>> Documentation/devicetree/bindings/pinctrl/mediatek,pinctrl-mt6795.yaml
>>>>
>>>>   diff --git
>>>> a/Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml
>>>> b/Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml
>>>>   index a2141eb0854e..cada3530dd0a 100644
>>>>   ---
>>>> a/Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml
>>>>   +++
>>>> b/Documentation/devicetree/bindings/pinctrl/mediatek,mt6779-pinctrl.yaml
>>>>   @@ -8,6 +8,7 @@ title: Mediatek MT6779 Pin Controller
>>>>
>>>>    maintainers:
>>>>      - Andy Teng <andy.teng@...iatek.com>
>>>>   +  - AngeloGioacchino Del Regno
>>>> <angelogioacchino.delregno@...labora.com>
>>>>      - Sean Wang <sean.wang@...nel.org>
>>>>
>>>>    description:
>>>>   @@ -18,6 +19,7 @@ properties:
>>>>      compatible:
>>>>        enum:
>>>>          - mediatek,mt6779-pinctrl
>>>>   +      - mediatek,mt6795-pinctrl
>>>>          - mediatek,mt6797-pinctrl
>>>>
>>>>      reg:
>>>>   @@ -43,9 +45,10 @@ properties:
>>>>      interrupt-controller: true
>>>>
>>>>      interrupts:
>>>>   -    maxItems: 1
>>>>   +    minItems: 1
>>>>   +    maxItems: 2
>>>>        description: |
>>>>   -      Specifies the summary IRQ.
>>>>   +      The interrupt outputs to sysirq.
>>>
>>> I am not sure if description is relevant now for all variants... what
>>> is
>>> the sysirq? You have two interrupts so both go to one sysirq?
>>
>> It's the system interrupt controller and it has several inputs. Both
>> interrupts go to it.
> 
> Then the naming is confusing because "sysirq" sounds like "system
> interrupt".
> 

Yassine: "Interrupt outputs to the system interrupt controller (sysirq)"

That will surely clear up the confusion... :-)

Cheers,
Angelo