From: Stefano Radaelli <stefano.radaelli21@gmail•com>
To: Frank Li <Frank.Li@nxp•com>,
linux-kernel@vger•kernel.org, devicetree@vger•kernel.org,
imx@lists•linux.dev
Cc: pierluigi.p@variscite•com,
Stefano Radaelli <stefano.r@variscite•com>,
Rob Herring <robh@kernel•org>,
Krzysztof Kozlowski <krzk+dt@kernel•org>,
Conor Dooley <conor+dt@kernel•org>,
Sascha Hauer <s.hauer@pengutronix•de>,
Pengutronix Kernel Team <kernel@pengutronix•de>,
Fabio Estevam <festevam@gmail•com>,
linux-arm-kernel@lists•infradead.org
Subject: [PATCH v1 1/1] arm64: dts: imx91-var-som-symphony: fix RGB_SEL handling
Date: Fri, 29 May 2026 15:48:50 +0200 [thread overview]
Message-ID: <20260529134850.22196-1-stefano.r@variscite.com> (raw)
From: Stefano Radaelli <stefano.r@variscite•com>
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 <stefano.r@variscite•com>
---
.../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 = <®_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
next reply other threads:[~2026-05-29 13:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-29 13:48 Stefano Radaelli [this message]
2026-06-01 20:42 ` [PATCH v1 1/1] arm64: dts: imx91-var-som-symphony: fix RGB_SEL handling Frank Li
2026-06-03 9:12 ` Stefano Radaelli
2026-06-03 18:03 ` Frank.Li
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