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[93.144.20.233]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4887e7e96fcsm25474495e9.2.2026.03.31.02.21.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Mar 2026 02:21:28 -0700 (PDT) From: Stefano Radaelli X-Google-Original-From: Stefano Radaelli To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org Cc: pierluigi.p@variscite.com, Stefano Radaelli , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam Subject: [PATCH v2 1/1] arm64: dts: imx91-var-dart-sonata: add RGB enable supply for PCA6408 Date: Tue, 31 Mar 2026 11:21:12 +0200 Message-ID: <20260331092112.7876-1-stefano.r@variscite.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Stefano Radaelli RGB enable pin, labeled as RGBSEL, is a board-level enable signal on the Sonata carrier board. The two PCA6408 GPIO expanders depend on this signal being asserted, so model it as a fixed regulator and use it as their vcc-supply. Signed-off-by: Stefano Radaelli --- v1->v2: - Fixed commit message and RGB pin references. arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts b/arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts index afa39dab240a..3f0fd321d95f 100644 --- a/arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts +++ b/arch/arm64/boot/dts/freescale/imx91-var-dart-sonata.dts @@ -90,6 +90,13 @@ reg_vref_1v8: regulator-adc-vref { regulator-max-microvolt = <1800000>; }; + 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-vmmc-usdhc2 { compatible = "regulator-fixed"; pinctrl-names = "default"; @@ -195,6 +202,7 @@ pca6408_1: gpio@20 { #gpio-cells = <2>; interrupt-parent = <&gpio1>; interrupts = <10 IRQ_TYPE_LEVEL_LOW>; + vcc-supply = <®_rgb_sel>; }; pca6408_2: gpio@21 { @@ -204,6 +212,7 @@ pca6408_2: gpio@21 { #gpio-cells = <2>; interrupt-parent = <&gpio1>; interrupts = <10 IRQ_TYPE_LEVEL_LOW>; + vcc-supply = <®_rgb_sel>; }; pca9534: gpio@22 { -- 2.47.3