From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f41.google.com (mail-wm1-f41.google.com [209.85.128.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6F7D642A175 for ; Mon, 6 Jul 2026 09:35:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.41 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783330503; cv=none; b=erQFWAD7QE3yiEpdeIrDN0KUn5wnbpyQ6nCR8J7iCG0uHbkX1rp/P+Q6H0YyJhwhAZtO+2EtHQqBN3c3zaOOAVVUR0eKjsNvZ0vn2uL8fqvQnaFJa+S5TRmIp4Fi5juc23QraWne1hsvY+kjfx7rCd88oO+1P/j8AkDj+1HTqkU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783330503; c=relaxed/simple; bh=aQa30xpL6q/Y3xnkDPN85xU7y51oa93AO0Kem7bA9GE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Sr6m9xwK+LQz3CrAkjlMu2tPtdn0kCmFumLLCVIYIZeUVM6IrG29Bf177FO9xWWYWJakfQ/VHHqoHdvFel9cAzHNjZmwb37PsxUSd8VVUlIne7Q6XXZWon6dvv3aB8VRZletsp7WVZ3CqOIloH4ik6JaNIgPGxpeOack0KRVcbQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Zs+bA14i; arc=none smtp.client-ip=209.85.128.41 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Zs+bA14i" Received: by mail-wm1-f41.google.com with SMTP id 5b1f17b1804b1-493b27c7451so34207665e9.0 for ; Mon, 06 Jul 2026 02:35:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783330498; x=1783935298; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=LbKx4UdJngIHDfVXCfQYXIxFv5ahfIStqyAOLEiYvps=; b=Zs+bA14iq8omPyB8IMS8EtMsehgOXpD9EqDwywRZ/3Ng1cES09mo0n57ZxNMyWANdX a7mf3ndPoyzgz+AoeG9dBJeAs+HeAUb+nCjYzAfCm8CX9nqgYTcm/uRbDWG//23/vxY2 +8CRaMzonXDgf6hJVGl22gbTqHwB6CJPlM8HMUHnOZgVG2iPEZ0H7nOteeaPdHL3brji v5+q+t7eAS/iIZh/Vio7N0efm6peuuz3Hmft7sJx+3oph38h52aolbtXsr03FPOyK0ZG Ghqk+tntKvejB/dGTqmoPJnS5frFzvl8M+zMq4URTdIzZ4NDWZUXZ4lTPAisalKNCC2X hlqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783330498; x=1783935298; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=LbKx4UdJngIHDfVXCfQYXIxFv5ahfIStqyAOLEiYvps=; b=gSWRDcfWBCcTBcvqYpcJh5QF3n3na7QvEll3FAbLtLheIu24AaAesnmEN3AU7Q15Fi 9P6yUSMazwwINBJZ7MaT4oYBPU64pr1McM9BbrABuD5+dsXZColiFCwU8Fm4XXyOuAeX RUAA13IHeXD31KZMRoqzmG965bacUesfrG45MfLag/qOkjhYccQg6KBJWuCFNNoC26ao FX+cv7ViedoOZn9xFrdYm/xwQzGzj69Y4xrCEcplmxyKCp0IuWucmEzuMGDkeASv/gBj w1hvomzwvUCLsTB8raimqyErhAKYGNb4U3kOjmq6FDlFh0yjQrZSgAo6KORz2yjT+TMR ds2g== X-Gm-Message-State: AOJu0Yyl/4sjF1uWXoY3KK8XvUn3xyLcrc1NecZNfvRiv3FRATOlnzFB /lG1fH9de+9I05oiycMnoJoDZSEifkgS+CWb7EmjLV+bmnNGuyjqsUTCu5h1LA== X-Gm-Gg: AfdE7clWzUkhoukHZBKgQx73RPZ37OSvvKGxcSVBKv7CuPQMAr/8rKGCZyJ57xuZAMO tKcA4zxNkUspn6S3Vs1EBrbUKDseG7Xv8FIsyk6R6BNwTA2erGaWsUCP4rbEvkxE6YDc/GTl7do FUKbNL9m7HMKU8xTpRiMADx4hicCsZaxIzHeGZjjraiyia4IbHlFvSXTP9GzyFQUSsUq2Trv8xu 9E7HLPzr0yD7aCIHaUlX2kJ0HAD75JV/sIm1h7bR/LQDr+dOEoPIy5kDMKfoNyhS9W68bw1Erzx s9Qq9iTCif6HqABmzBWSItiKn3qkLsSn8O0bbVPAIFa0OzResoct1iRDIKJdbe9PBiLhGc5dR8a 9XGtgbOPEUWAZUaqbRTidOH6mor3psbk4jVaq2gNgkFAF3QvifJIzIG5Fi/TUCPvo8lVemcHKQQ zi5zcq7zMYpvyx0N4dtwGd9A8PsvdE7tVdPZ4dqn0MjZxk2lCvf1mih2hmEO3sNdcwBl/CLOcno QSQSQ0JQZB56RKVpImR8hdsyQ== X-Received: by 2002:a05:600c:8489:b0:490:b26c:64ad with SMTP id 5b1f17b1804b1-493d128b664mr87032755e9.5.1783330497687; Mon, 06 Jul 2026 02:34:57 -0700 (PDT) Received: from Lord-Beerus.station (net-93-144-65-248.cust.dsl.teletu.it. [93.144.65.248]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-493c6375764sm314379715e9.5.2026.07.06.02.34.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jul 2026 02:34:57 -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 , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Rob Herring , Krzysztof Kozlowski , Conor Dooley Subject: [PATCH v2 06/15] arm64: dts: freescale: imx8mn-var-som: Add MCP251xFD CAN controller Date: Mon, 6 Jul 2026 11:34:36 +0200 Message-ID: X-Mailer: git-send-email 2.47.3 In-Reply-To: References: 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 Add support for the Microchip MCP251xFD CAN-FD controller connected to the SPI bus on the i.MX8MN VAR-SOM. The controller uses a 40 MHz external oscillator and requires an interrupt line and a dedicated RX interrupt GPIO. Add the fixed clock, the MCP251xFD device node with the required properties, and the corresponding pinctrl configuration. Signed-off-by: Stefano Radaelli --- v1->v2: - .../boot/dts/freescale/imx8mn-var-som.dtsi | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi index e2e04ad2fbb6..ac22dd3e6542 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn-var-som.dtsi @@ -11,6 +11,13 @@ / { model = "Variscite VAR-SOM-MX8MN module"; compatible = "variscite,var-som-mx8mn", "fsl,imx8mn"; + clk40m: oscillator { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <40000000>; + clock-output-names = "can_osc"; + }; + memory@40000000 { device_type = "memory"; reg = <0x0 0x40000000 0 0x40000000>; @@ -130,6 +137,19 @@ touchscreen@0 { ti,keep-vref-on; wakeup-source; }; + + /* CAN controller */ + can0: can@1 { + compatible = "microchip,mcp251xfd"; + reg = <1>; + clocks = <&clk40m>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_can>; + interrupt-parent = <&gpio1>; + interrupts = <5 IRQ_TYPE_LEVEL_LOW>; + spi-max-frequency = <20000000>; + microchip,rx-int-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>; + }; }; &fec1 { @@ -391,6 +411,13 @@ &wdog1 { }; &iomuxc { + pinctrl_can: cangrp { + fsl,pins = < + MX8MN_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x1c0 + MX8MN_IOMUXC_SD2_CD_B_GPIO2_IO12 0x16 + >; + }; + pinctrl_ecspi1: ecspi1grp { fsl,pins = < MX8MN_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK 0x13 -- 2.47.3