linux-kernel - [PATCH] ARM: dts: bcm283x: Fix hdmi hpd-gpio pin

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Message-ID: <20240715230311.685641-1-flokli@flokli.de>
Date: Tue, 16 Jul 2024 02:03:11 +0300
From: Florian Klink <flokli@...kli.de>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Florian Fainelli <florian.fainelli@...adcom.com>,
	Ray Jui <rjui@...adcom.com>,
	Scott Branden <sbranden@...adcom.com>,
	Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>,
	devicetree@...r.kernel.org,
	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Cc: Florian Klink <flokli@...kli.de>
Subject: [PATCH] ARM: dts: bcm283x: Fix hdmi hpd-gpio pin

HDMI_HPD_N_1V8 is connected to GPIO pin 0, not 1.

This fixes HDMI hotplug/output detection.

See https://datasheets.raspberrypi.com/cm/cm3-schematics.pdf

Signed-off-by: Florian Klink <flokli@...kli.de>
---
 arch/arm/boot/dts/broadcom/bcm2837-rpi-cm3-io3.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/broadcom/bcm2837-rpi-cm3-io3.dts b/arch/arm/boot/dts/broadcom/bcm2837-rpi-cm3-io3.dts
index 72d26d130efa..85f54fa595aa 100644
--- a/arch/arm/boot/dts/broadcom/bcm2837-rpi-cm3-io3.dts
+++ b/arch/arm/boot/dts/broadcom/bcm2837-rpi-cm3-io3.dts
@@ -77,7 +77,7 @@ &gpio {
 };
 
 &hdmi {
-	hpd-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
+	hpd-gpios = <&expgpio 0 GPIO_ACTIVE_LOW>;
 	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 	status = "okay";
 };
-- 
2.45.1