From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 5AB801531CC; Mon, 7 Oct 2024 06:54:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728284073; cv=none; b=VSuhbvBH6wDN9n3PRzk3AWSdrnrgmnuBOwLDID3O61f9PGIeW6o9e6RrR6XmkjeXg/4VMyUK2Z2Wh31aBMJdvksXrV5uNxpX/c6RhlfMo0fTAXxqk7KU6+zKv8xVfA0i0Qrgk5K8Fs0OSGUO7oOU1mR7DCK2yW281VZA5A3/jK4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728284073; c=relaxed/simple; bh=9e9p+xXh+nLFvhH81U4mWabFqS49oBi1qZONGC96qRU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=hf8JY0roglaKjl1V+QCalP6np7Qbg016EM/jGGjirSywhGnqfio6bKL/KkULZz4nXvBEbIBcv/rsCrhlPPhJqs5kzBSZWjXGAr73lPZwxlWE1aZRsZAPWmzdypW1kUL+pSro0984OxlbTm1zS7pxSvap62TCg9K78aDQGeoAYgo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OeJTAS+A; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OeJTAS+A" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3D20DC4CEC7; Mon, 7 Oct 2024 06:54:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728284073; bh=9e9p+xXh+nLFvhH81U4mWabFqS49oBi1qZONGC96qRU=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=OeJTAS+A/n8xsW2OYa2fIo2thGM797ZnMHwuYdCsEQ4UqcxspHPAc/+lU9hocDK9n Xb3NcVRI3sPGsK7baIGy9m+cqp+gzTwMnU7GdT96R+2KqVx23CpAzlluzp1J9/1Fb0 K7tJATfoRrXOZGQ+XGvewYRTkNMXJCEhwSurH4QUuo5dhwgAEZWYJdbsL4jaf6ole/ pk2x8e6nwwJgHWbV9J9G97MFPYn37zmK95vAuB97cbyo5JxKhEH7HaXLnauF5avXAl e+X8QqALv5nfRXnLFljxLO11kNQKgD6LCLNr7iPKAHuuT1lyhN+axPRommMG4IbwVY MVQUyKXl5tt9w== Message-ID: <64421c0c-1d48-421d-8841-859695b5046d@kernel.org> Date: Mon, 7 Oct 2024 08:54:24 +0200 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 11/12] dt-bindings: pci: rockchip,rk3399-pcie-ep: Add ep-gpios property To: Damien Le Moal Cc: Manivannan Sadhasivam , Lorenzo Pieralisi , Kishon Vijay Abraham I , Shawn Lin , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Bjorn Helgaas , Heiko Stuebner , linux-pci@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, linux-rockchip@lists.infradead.org, Rick Wertenbroek , Wilfred Mallawa , Niklas Cassel References: <20241007041218.157516-1-dlemoal@kernel.org> <20241007041218.157516-12-dlemoal@kernel.org> <179ed297-1d06-480d-8095-7212cbde2ab1@kernel.org> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 07/10/2024 08:50, Damien Le Moal wrote: > On 10/7/24 15:12, Krzysztof Kozlowski wrote: >> On Mon, Oct 07, 2024 at 01:12:17PM +0900, Damien Le Moal wrote: >>> From: Wilfred Mallawa >>> >>> Describe the `ep-gpios` property which is used to map the PERST# input >>> signal for endpoint mode. >> >> Why "ep" for PERST signal? Looks totally unrelated name. There is >> already reset-gpios exactly for PERST, so you are duplicating it. Why? > > Because the host side controller already has the same "ep-gpios" property. > > Documentation/devicetree/bindings/pci/rockchip,rk3399-pcie.yaml If host has it, then it is a common property so goes to common schema for these devices. > > So naming that property the same allows common code to initialize that gpio in > rockchip_pcie_parse_dt(). > > Also, I do not see reset-gpios being defined/used by this driver (host and ep > sides). I am talking about bindings, not driver. Best regards, Krzysztof