From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=178.251.229.89 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792673758; b=1VXI8piE44er0/0t9QzEcOEdNvVtmYE9MUoy6ehari39ihx9rqU363I5BmF76cIPhzmp msY0SuF+a1Zl/pyX4DMhy814u6gy9eg/bQ5ilZbADcdHT5jJPufXPo6hoJ/ELrdALIwOj yGkCINhJ4Pexxx6Xw5qR4PQYHSuFtBSBU+FuRzBULKZVK1jnNetLrRl2VI319OITDAm2t zmkTaHrStedRdihTv3Qsx+mWwSdGUxHMr6xPyOnYTNV0LKbOOs7/JYefXsTj51CZTcNpZ LKbqFixqgqrbGVUsRutoRqSxk1nrdRkNDan/Ytz8MjkpQvDvnQen8Yqo3ZVhJ46oH7A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792673758; h=DMARC-Filter:Received:DKIM-Signature:Message-ID:Date:MIME-Version: User-Agent:Subject:To:Cc:References:Content-Language:From:In-Reply-To: Content-Type:Content-Transfer-Encoding:X-Last-TLS-Session-Version; bh=drmG8Nei2eFEJ87SKq5m/aoRCFf+pZY8Bds28IJxne4=; b=lnplnAiP9WRSvFSXOmae1gn+c1I+eVt2GK2Np65/nHUJ3UatZz5gXg/PwudDHPceLSAe hTnIwSDRA/bIqXlfD7D9pqNxZZfZK8HkvlZ+HYCl7qYB3B7V2OHQ4P0xIat5H/k3Pj2KU uh132P/uXyiFpCYu8nJFtpbelQiLNFuR/+2yRWEIpNFI9Jg3sAhxdHz71B8u7BN3I/3k7 Id2P2HseRH+8oZL5eqeuOn1R77u6yI5MGOEfYlCXJOlcqAi5Di8q9UMDxu29VRm2XVScF fAHlzbuwoDySVqwDZBf0hf0i/e4GpbZkihk4iOzPTh98hD39LzxJGARFXZnrXKBugiA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=nabladev.com; spf=pass smtp.mailfrom=nabladev.com; dkim=pass header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=M5BMlIdT; arc=none smtp.remote-ip=178.251.229.89 Received: from mx.nabladev.com (mx.nabladev.com [178.251.229.89]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AE1B606A320; Thu, 22 Oct 2026 12:55:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 8AE1B606A320 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=nabladev.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nabladev.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=M5BMlIdT Received: from [127.0.0.1] (localhost [127.0.0.1]) by localhost (Mailerdaemon) with ESMTPSA id 106A710AB2C; Thu, 22 Oct 2026 14:55:51 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nabladev.com; s=dkim; t=1792673751; h=from:subject:date:message-id:to:cc:mime-version:content-type: content-transfer-encoding:content-language:in-reply-to:references; bh=drmG8Nei2eFEJ87SKq5m/aoRCFf+pZY8Bds28IJxne4=; b=M5BMlIdTRHNvNeZk/cfo4PdmWuE5r6IkremRUT+EYDRjPd0zBjn2ePQNEbTByN4XTAr1JA pSNnJIdahnZ0GHLptr5mUVHekmlmAQy3pdc+WlgFWaLfZVYkCfi5Zw0m3T5xAaHkITkmLK 7xBlEjwqLp8vZ6wEuofKnrkDW4NkWGlK1poYoGVosi4jJAJS4YVryjfmoNwChlyN0XHGVg WNz5i6FparAqD25lgf8MzKw6lCNtiuwfpkjSxosN+S1kBc5j2fl8BVaZr6752l2zz2Er6G O4/HwhmMgopdQ8FXcfdr1Da025S8nQ2h85m8AwhEgtKikxPuVWWBxhkGRBa4HQ== Message-ID: <948d901e-ee1c-45f3-9946-30cea28a6128@nabladev.com> Date: Thu, 22 Oct 2026 13:34:24 +0200 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/2] ARM: dts: imx6ull-dhcor-maveo-box: Remove unused SPI device To: Christoph Niedermaier , Francesco Dolcini Cc: "linux-arm-kernel@lists.infradead.org" , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , "devicetree@vger.kernel.org" , "imx@lists.linux.dev" , kernel , "linux-kernel@vger.kernel.org" References: <20261021134435.17350-1-cniedermaier@dh-electronics.com> <1073daf0-3676-4123-9ca4-c182ea5883a3@nabladev.com> <20261021183704.GA1116319@francesco-nb> <71d725ee47804205826bdda322fdfdb6@dh-electronics.com> <20261022092536.GA232648@francesco-nb> <794745ff1c484257bef4f17917f3cf0e@dh-electronics.com> Content-Language: en-US From: Marek Vasut In-Reply-To: <794745ff1c484257bef4f17917f3cf0e@dh-electronics.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-Last-TLS-Session-Version: TLSv1.3 On 10/22/26 12:58 PM, Christoph Niedermaier wrote: Hello Christoph, >>>>>>> --- a/arch/arm/boot/dts/nxp/imx/imx6ull-dhcor-maveo-box.dts >>>>>>> +++ b/arch/arm/boot/dts/nxp/imx/imx6ull-dhcor-maveo-box.dts >>>>>>> @@ -60,14 +60,6 @@ &ecspi4 { >>>>>>> pinctrl-0 = <&pinctrl_ecspi4>; >>>>>>> pinctrl-names = "default"; >>>>>>> status = "okay"; >>>>>> >>>>>> Drop "status = "okay"" too , since this controller will be unused ? >>>>> >>>>> you can instantiate a new device on the SPI bus from userspace. up to >>>>> you, but if I was a user I would appreciate to have it enabled. >>>> Good point -- Christoph, is this the (use)case here , can the user do that? >>> >>> I don't think that's the case, since there isn't currently an SPI device >>> connected to this interface. Nevertheless, I'd be interested to know how >>> to instantiate a new device from user space. >> >> Documentation/spi/instantiating-devices.rst > > This is a relatively new document, I haven't seen it yet. Thank you very much. > > I'm now leaning toward leaving the interface set to “okay” so that the existing > SPI pins on X10 connector can easily accessed in the future. If you connect anything more complex than a simple device, you would anyway need a DT overlay for this. > @Marek: If you insist, I can also remove the status line. Either way is fine by me, but consider the above.