Subject: [PATCH v1 1/1] arm64: dts: imx91-var-som-symphony: fix RGB_SEL handling

From: Stefano Radaelli <[email-masked]>
Date: Fri, 29 May 2026 15:48:50 +0200

From: Stefano Radaelli <[email-masked]>

RGB_SEL is a board-level signal driven by the PCAL6408 GPIO expander on
the Symphony carrier board.

The signal needs to be driven high on the i.MX91 variant to keep the
board in the expected display configuration. Move the handling of this
line from a fixed regulator tied to the PCAL6408 supply to a GPIO hog on
the correct GPIO expander.

Fixes: b3292129dcef ("arm64: dts: imx91-var-som: Add support for Variscite Symphony board")
Signed-off-by: Stefano Radaelli <[email-masked]>
---
 .../dts/freescale/imx91-var-som-symphony.dts     | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx91-var-som-symphony.dts b/arch/arm64/boot/dts/freescale/imx91-var-som-symphony.dts
index ac9fed58357e..c1e6c9978275 100644
--- a/arch/arm64/boot/dts/freescale/imx91-var-som-symphony.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-var-som-symphony.dts
@@ -97,13 +97,6 @@ reg_fec_phy: regulator-fec-phy {
 		regulator-always-on;
 	};
 
-	reg_rgb_sel: regulator-rgb-enable {
-		compatible = "regulator-fixed";
-		regulator-name = "RGBSEL";
-		gpio = <&pca9534 7 GPIO_ACTIVE_HIGH>;
-		enable-active-high;
-	};
-
 	reg_usdhc2_vmmc: regulator-usdhc2 {
 		compatible = "regulator-fixed";
 		regulator-name = "VSD_3V3";
@@ -258,7 +251,6 @@ pca6408: gpio@21 {
 		#interrupt-cells = <2>;
 		interrupt-parent = <&gpio2>;
 		interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
-		vcc-supply = <&reg_rgb_sel>;
 		wakeup-source;
 
 		tpm-enable-hog {
@@ -267,6 +259,14 @@ tpm-enable-hog {
 			output-high;
 			line-name = "tpm_en";
 		};
+
+		/* RGB_SEL */
+		lvds-brg-enable-hog {
+			gpio-hog;
+			gpios = <7 GPIO_ACTIVE_HIGH>;
+			output-high;
+			line-name = "lvds_brg_en";
+		};
 	};
 
 	/* USB Type-C Controller */
-- 
2.47.3