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charset="utf-8" The MCP251XFD can expose two pins as GPIOs. The binding already declares gpio-controller and #gpio-cells for the device. Whitelist GPIO hog child nodes using patternProperties so boards can set default GPIO states at boot via DT, consistent with other GPIO controllers (e.g. microchip,mpfs-gpio). Signed-off-by: Viken Dadhaniya Reviewed-by: Krzysztof Kozlowski --- .../devicetree/bindings/net/can/microchip,mcp251xfd.yaml | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.= yaml b/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml index 2d13638ebc6a..49d6f6bbe193 100644 --- a/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml +++ b/Documentation/devicetree/bindings/net/can/microchip,mcp251xfd.yaml @@ -54,6 +54,12 @@ properties: "#gpio-cells": const: 2 =20 +patternProperties: + "^.+-hog(-[0-9]+)?$": + type: object + required: + - gpio-hog + required: - compatible - reg --=20 2.34.1 From nobody Sun Feb 8 09:22:23 2026 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 11058480DE4 for ; Thu, 8 Jan 2026 12:52:22 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; 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charset="utf-8" Enable the MCP2518FD CAN controller on the QCS6490 RB3 Gen2 platform. The controller is connected via SPI3 and uses a 40=E2=80=AFMHz oscillator. A GPIO hog for GPIO0 is included to configure the CAN transceiver in Normal mode during boot. Signed-off-by: Viken Dadhaniya --- arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 30 ++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot= /dts/qcom/qcs6490-rb3gen2.dts index e3d2f01881ae..f2f2925e645a 100644 --- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts +++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts @@ -44,6 +44,14 @@ chosen { stdout-path =3D "serial0:115200n8"; }; =20 + clocks { + mcp2518fd_osc: can-clk { + compatible =3D "fixed-clock"; + clock-frequency =3D <40000000>; + #clock-cells =3D <0>; + }; + }; + dp-connector { compatible =3D "dp-connector"; label =3D "DP"; @@ -1151,6 +1159,28 @@ platform { }; }; =20 +&spi3 { + status =3D "okay"; + + can@0 { + compatible =3D "microchip,mcp2518fd"; + reg =3D <0>; + interrupts-extended =3D <&tlmm 7 IRQ_TYPE_LEVEL_LOW>; + clocks =3D <&mcp2518fd_osc>; + spi-max-frequency =3D <10000000>; + vdd-supply =3D <&vreg_l11c_2p8>; + gpio-controller; + #gpio-cells =3D <2>; + + gpio0-hog { + gpio-hog; + gpios =3D <0 GPIO_ACTIVE_LOW>; + output-high; + line-name =3D "mcp251xfd-gpio0"; + }; + }; +}; + &swr2 { status =3D "okay"; =20 --=20 2.34.1