From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 744F4606A319 for ; Thu, 22 Oct 2026 12:56:06 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=LiwiFRf7; dkim=pass (2048-bit key, unprotected) header.d=nabladev.com header.i=@nabladev.com header.a=rsa-sha256 header.s=dkim header.b=M5BMlIdT DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:In-Reply-To:From:References:Cc:To:Subject:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Unsubscribe-Post: List-Owner; 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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-Archived-By: 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 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261022_055558_027451_108CB15F X-CRM114-Status: GOOD ( 14.51 ) X-Spam-Score: -2.1 (--) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-12.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 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.