linux-kernel - [PATCH v2 1/2] dt-bindings: leds: aw2013: Document vddio-supply

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Message-ID: <20230320175131.174657-1-linmengbo0689@protonmail.com>
Date:   Mon, 20 Mar 2023 17:55:21 +0000
From:   "Lin, Meng-Bo" <linmengbo0689@...tonmail.com>
To:     linux-kernel@...r.kernel.org
Cc:     Pavel Machek <pavel@....cz>, Lee Jones <lee@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nikita Travkin <nikita@...n.ru>,
        Stephan Gerhold <stephan@...hold.net>,
        linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht
Subject: [PATCH v2 1/2] dt-bindings: leds: aw2013: Document vddio-supply

Some LEDs controllers are used with external pull-up for the interrupt
line and the I2C lines, so we might need to enable a regulator to bring
the lines into usable state. Otherwise, this might cause spurious
interrupts and reading from I2C will fail.

Document support for "vddio-supply" that is enabled by the aw2013 driver
so that the regulator gets enabled when needed.

Signed-off-by: Lin, Meng-Bo <linmengbo0689@...tonmail.com>
---
 Documentation/devicetree/bindings/leds/leds-aw2013.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/leds-aw2013.yaml b/Documentation/devicetree/bindings/leds/leds-aw2013.yaml
index 08f3e1cfc1b1..79b69cf1d1fe 100644
--- a/Documentation/devicetree/bindings/leds/leds-aw2013.yaml
+++ b/Documentation/devicetree/bindings/leds/leds-aw2013.yaml
@@ -23,6 +23,11 @@ properties:
   vcc-supply:
     description: Regulator providing power to the "VCC" pin.
 
+  vddio-supply:
+    description: |
+      Optional regulator that provides digital I/O voltage,
+      e.g. for pulling up the interrupt line or the I2C pins.
+
   "#address-cells":
     const: 1
 
-- 
2.30.2