linux-kernel - [PATCH net-next 1/4] dt-bindings: leds: add 'active-high' property

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Message-ID: <e91ca84ac836fc40c94c52733f8fc607bcbed64c.1728145095.git.daniel@makrotopia.org>
Date: Sat, 5 Oct 2024 17:24:20 +0100
From: Daniel Golle <daniel@...rotopia.org>
To: Pavel Machek <pavel@....cz>, Lee Jones <lee@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Andrew Lunn <andrew@...n.ch>,
	Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Xu Liang <lxu@...linear.com>,
	Christian Marangi <ansuelsmth@...il.com>,
	Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
	Daniel Golle <daniel@...rotopia.org>,
	Robert Marko <robimarko@...il.com>,
	Russell King <rmk+kernel@...linux.org.uk>,
	Abhishek Chauhan <quic_abchauha@...cinc.com>,
	Jacek Anaszewski <jacek.anaszewski@...il.com>,
	linux-leds@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: [PATCH net-next 1/4] dt-bindings: leds: add 'active-high' property

Other than described in commit c94d1783136 ("dt-bindings: net: phy: Make
LED active-low property common") the absence of the 'active-low'
property means not to touch the polarity settings which are inherited
from reset defaults, the bootloader or bootstrap configuration.
Hence, in order to override a LED pin being active-high in case of the
default, bootloader or bootstrap setting being active-low an additional
property 'active-high' is required.
Document that property and make it mutually exclusive to the existing
'active-low' property.

Signed-off-by: Daniel Golle <daniel@...rotopia.org>
---
 Documentation/devicetree/bindings/leds/common.yaml | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/common.yaml b/Documentation/devicetree/bindings/leds/common.yaml
index bf9a101e4d42..7c3cd7b7412e 100644
--- a/Documentation/devicetree/bindings/leds/common.yaml
+++ b/Documentation/devicetree/bindings/leds/common.yaml
@@ -202,6 +202,12 @@ properties:
       #trigger-source-cells property in the source node.
     $ref: /schemas/types.yaml#/definitions/phandle-array
 
+  active-high:
+    type: boolean
+    description:
+      Makes LED active high. To turn the LED ON, line needs to be
+      set to high voltage instead of low.
+
   active-low:
     type: boolean
     description:
@@ -225,6 +231,14 @@ properties:
       Maximum timeout in microseconds after which the flash LED is turned off.
       Required for flash LED nodes with configurable timeout.
 
+allOf:
+  - if:
+      required:
+        - active-low
+    then:
+      properties:
+        active-high: false
+
 additionalProperties: true
 
 examples:
-- 
2.46.2