linux-kernel - [PATCH] dt-bindings: mfd: x-powers,axp152: make interrupt optional for more chips

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Message-Id: <20230802141829.522595-1-andre.przywara@arm.com>
Date:   Wed,  2 Aug 2023 15:18:29 +0100
From:   Andre Przywara <andre.przywara@....com>
To:     Lee Jones <lee@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Chen-Yu Tsai <wens@...e.org>
Cc:     devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Icenowy Zheng <uwu@...nowy.me>,
        Shengyu Qu <wiagn233@...look.com>,
        Martin Botka <martin.botka@...ainline.org>,
        Martin Botka <martin@...u3d.com>,
        Mark Brown <broonie@...nel.org>
Subject: [PATCH] dt-bindings: mfd: x-powers,axp152: make interrupt optional for more chips

All X-Powers PMICs described by this binding have an IRQ pin, and so
far (almost) all boards connected this to some NMI pin or GPIO on the SoC
they are connected to.
However we start to see boards that omit this connection, and technically
the IRQ pin is not essential to the basic PMIC operation.
The existing Linux driver allows skipping an IRQ pin setup for some
chips already, so update the binding to also make the DT property
optional for these chips, so that we can actually have DTs describing
boards with the PMIC interrupt not wired up.

Signed-off-by: Andre Przywara <andre.przywara@....com>
---
Hi,

arguably the IRQ functionality is optional for many more PMICs,
especially if a board doesn't use GPIOs or a power key.
So I wonder if the interrupts property should become optional for all?
After all it's more a board designer's decision to wire up the IRQ pin
or not, and nothing that's really related to a particular PMIC.

Cheers,
Andre

 Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml b/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
index 9ad55746133b5..06f1779835a1e 100644
--- a/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
+++ b/Documentation/devicetree/bindings/mfd/x-powers,axp152.yaml
@@ -67,7 +67,10 @@ allOf:
         properties:
           compatible:
             contains:
-              const: x-powers,axp305
+              enum:
+                - x-powers,axp15060
+                - x-powers,axp305
+                - x-powers,axp313a

     then:
       required:
-- 
2.25.1