From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-11.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id DAC14C432BE for ; Mon, 9 Aug 2021 07:32:59 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 8419060E97 for ; Mon, 9 Aug 2021 07:32:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8419060E97 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=UQM2fj1Uv7spyRtJM4OIkS/44HIUCC81lLeFzTa3Zpc=; b=DLKtEKdEgnUDTC nqcVjhbfDFXUpjBN6As17CCKIS0QcMLuoWAxcX0IX7gMNiXDUfXToAjDVi9Gl8YLcwECT5A/Ku0qt EJr+UbkryFMU+BQUpkJiddsWs36+AcOKvKqd2/ERlXCVOUnt4BPTaArIjCJg6bnQ2Q6hjHacdA+72 gbdYcSJFQ+8mQARdHsIwhlIW30nODfF7TdmHMvviM9g/FHmdx1rF0fjvAH6cgEj4rAes/zKj6eiW1 L0hh9qc3/4zSv1dFodBbOcvlhAH5oQ3mL01cbbimW5/1P9B4MEekugy8z8MvsXdD+8JBd4wAXHlAt pz/zai34ge23wcgIYqvw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mCzkj-00HMMw-RJ; Mon, 09 Aug 2021 07:31:17 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mCzkf-00HMLr-Aa for linux-arm-kernel@lists.infradead.org; Mon, 09 Aug 2021 07:31:14 +0000 Received: by mail.kernel.org (Postfix) with ESMTPSA id DEFA560E97; Mon, 9 Aug 2021 07:31:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1628494273; bh=z99H7hzgBGspzucz6yctTYcafoXLaLQMglZZWuwsiQ4=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=R2X2eF6G5bOzQLSUiqiV/9BfxtuHYfgT1AnnDPRSJ/HThadi9FH57uSMQnQyMB6Xn D4g7DCt3pUP6CZlKHE8uSoRZx3YbD/zVqLz8Y9R63ddAvGvwL3xQX1vu1PhTXzJ0Hv zOoKCPa1SySJX0+n3HjvUi2JqAH5475iip64G+BOdu7/7if3MaZkhHjdFCTGuzwbI0 j+1tMH6l+WXVpBeVXakzUL2CmjF6i+CJFMi55BCtbHIaoHJM+WBILSRHyNivYoB9Zi iXrnKtoY2b3m/oilg6vQc32Iljgjw92R0EET6fO3OYQooUIgEj24Sb0bPSf4k3EIj9 d7q6mDQBB0pNA== Date: Mon, 9 Aug 2021 15:31:08 +0800 From: Shawn Guo To: Christoph Niedermaier Cc: linux-arm-kernel@lists.infradead.org, Fabio Estevam , Marek Vasut , NXP Linux Team , kernel@dh-electronics.com Subject: Re: [PATCH V7 2/7] ARM: dts: imx6q-dhcom: Rework of the DHCOM GPIO pinctrls Message-ID: <20210809073107.GH30984@dragon> References: <20210802141038.59663-1-cniedermaier@dh-electronics.com> <20210802141038.59663-2-cniedermaier@dh-electronics.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20210802141038.59663-2-cniedermaier@dh-electronics.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210809_003113_420858_EE72120F X-CRM114-Status: GOOD ( 17.05 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Aug 02, 2021 at 04:10:33PM +0200, Christoph Niedermaier wrote: > The function of each SoM pins is defined in the DHCOM standard [1] and > subset of them is defined as GPIOs (pins A-W). To ensure the interchange- > ability of the DHCOM SoMs, the function of the pins are fixed and cannot > be changed. On board level the DHCOM GPIOs can be used associated with > different blocks e.g. for interrupt or reset, but the function is always > GPIO. If not used, they can be freely used in the user space. > > Therefore the whole configuration of SoM pins is made in the SoM DT. > Defining the DHCOM GPIO pins as a separate pinctrl nodes makes moving a > subset of them to an appropriate block pinctrl group easier on board level, > since it is not necessary to have a large pinctrl hog group containing > unrelated pinmux entries on board level. This also makes it easy to update > the SoM DT without having to update all the board DTs too. If necessary it > is also possible to change the electrical properties of the DHCOM GPIOs by > overwriting the pinctrl on board level. > > [1] https://wiki.dh-electronics.com/images/2/2e/DOC_DHCOM-Standard-Specification_R01_2016-11-17.pdf > > Signed-off-by: Christoph Niedermaier > Cc: Shawn Guo > Cc: Fabio Estevam > Cc: Marek Vasut > Cc: NXP Linux Team > Cc: kernel@dh-electronics.com > To: linux-arm-kernel@lists.infradead.org Applied, thanks! _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel