linux-kernel - [PATCH] ARM: dts: bcm2835-rpi-zero-w: Fix led polarity

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Message-Id: <20200418123522.6390-1-vincent.stehle@laposte.net>
Date:   Sat, 18 Apr 2020 14:35:22 +0200
From:   Vincent Stehlé <vincent.stehle@...oste.net>
To:     devicetree@...r.kernel.org, linux-rpi-kernel@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        bcm-kernel-feedback-list@...adcom.com
Cc:     Rob Herring <robh+dt@...nel.org>, Ray Jui <rjui@...adcom.com>,
        Scott Branden <sbranden@...adcom.com>,
        Nicolas Saenz Julienne <nsaenzjulienne@...e.de>,
        Vincent Stehlé <vincent.stehle@...oste.net>,
        Stefan Wahren <stefan.wahren@...e.com>,
        Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH] ARM: dts: bcm2835-rpi-zero-w: Fix led polarity

The status "ACT" led on the Raspberry Pi Zero W is on when GPIO 47 is low.

This has been verified on a board and somewhat confirmed by both the GPIO
name ("STATUS_LED_N") and the reduced schematics [1].

[1]: https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/rpi_SCH_ZeroW_1p1_reduced.pdf

Fixes: 2c7c040c73e9 ("ARM: dts: bcm2835: Add Raspberry Pi Zero W")
Signed-off-by: Vincent Stehlé <vincent.stehle@...oste.net>
Cc: Stefan Wahren <stefan.wahren@...e.com>
Cc: Florian Fainelli <f.fainelli@...il.com>
---
 arch/arm/boot/dts/bcm2835-rpi-zero-w.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
index 4c3f606e5b8d8..f65448c01e317 100644
--- a/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
+++ b/arch/arm/boot/dts/bcm2835-rpi-zero-w.dts
@@ -24,7 +24,7 @@ chosen {
 
 	leds {
 		act {
-			gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
+			gpios = <&gpio 47 GPIO_ACTIVE_LOW>;
 		};
 	};
 
-- 
2.25.1