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=-5.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no 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 28842C433E2 for ; Tue, 14 Jul 2020 19:29:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0401322AB0 for ; Tue, 14 Jul 2020 19:29:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594754959; bh=lMK7C6ng+T9UttAEHw5V+tYjQ5/2JkOgzpqo9X6mc6A=; h=Date:From:To:Cc:Subject:References:In-Reply-To:List-ID:From; b=bRElaZdwYEqtTHYC6mcXCPoKRyYpEmPY0edskaKzLqcwTAY0gOvKrvhbXiBIdsu5L o7hSpmBAvrw/X8yW8Y+ZFcbE5b7/GVGeGl6c622GGaIe8bJ8ivQKmpYSOJVoNucdEQ m+P8nMvjSViTWiJLoiHK662qI0NDGrxSIqcMJf9I= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729396AbgGNT3R (ORCPT ); Tue, 14 Jul 2020 15:29:17 -0400 Received: from mail.kernel.org ([198.145.29.99]:45962 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726818AbgGNT3R (ORCPT ); Tue, 14 Jul 2020 15:29:17 -0400 Received: from localhost (fw-tnat.cambridge.arm.com [217.140.96.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 3212D225AB; Tue, 14 Jul 2020 19:29:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1594754956; bh=lMK7C6ng+T9UttAEHw5V+tYjQ5/2JkOgzpqo9X6mc6A=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=z9B7j3NbUZSWppYeDQAoliZQLbE9Iujz+KijRvU37A58urcaPZIpzOIt7+gDmPr7C K8TQT2GWYlKq8154QaHk0XB8nBlOUD26VsMo4nVy95veZI0Bal7PAiSwlZ+sApFtdn fF/kC/KafxtVLpBBTRspGYZTFwUuf1JcYRlMwM8E= Date: Tue, 14 Jul 2020 20:29:07 +0100 From: Mark Brown To: Frieder Schrempf Cc: linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org Subject: Re: [PATCH] spi: spidev: Add compatible for external SPI ports on Kontron boards Message-ID: <20200714192907.GJ4900@sirena.org.uk> References: <20200702141846.7752-1-frieder.schrempf@kontron.de> <20200702142511.GF4483@sirena.org.uk> <24ec4eed-de01-28df-ee1f-f7bcfc80051a@kontron.de> <20200702150725.GI4483@sirena.org.uk> <479d566a-213f-4e33-8ac7-7637ae88e31c@kontron.de> <20200713151108.GB4420@sirena.org.uk> <2eb6971b-7ea4-c9c8-5452-6f4b17e8860a@kontron.de> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="ibvzjYYg+QDzMCy1" Content-Disposition: inline In-Reply-To: <2eb6971b-7ea4-c9c8-5452-6f4b17e8860a@kontron.de> X-Cookie: Your password is pitifully obvious. User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --ibvzjYYg+QDzMCy1 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Jul 14, 2020 at 10:54:15AM +0200, Frieder Schrempf wrote: > It would still be quite nice to benefit from the flexibility of DT overlays > not only for the SPI use case. But before I come up with any custom > solution, for now I will rather have the device in the DT statically. > I just wonder if I need to keep the DT node for the device in a separate > patch in our own tree, or if a node with a custom compatible string like for > example "kontron,user-spi" would be accepted upstream, without a matching > driver? I'm having a hard time getting enthusiastic about it TBH - can you not just use spidev and live with the warning? --ibvzjYYg+QDzMCy1 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAl8OB4IACgkQJNaLcl1U h9DpaQf7BBqueEOqSjOvjtORDyHTDzwMyXjqzEizOxoc3v+nwMk+G90WhXg0aEM5 VPv8HBBGSPnQlzkc6qHJFYZ5axm4lNsQsED/KDm2nZ5pHYVHvg+S/+JOkAJXqaYx JI/gqdu+JFZYqUcV4i5/BwGO00zR3OntARea/24y/atTbxqB9Lm/vGrTs/Qw8FUR oflKzZdlg+s5aUiQvl7Gwa+9O2oJLM5EwpFjfGJ967GtKJfkMjHEKhwVqEvJgfeM 6unCikuBQrE4/w7S0xjlm/M+2fT2ussP0nr8yZmzsEN+q7AtHkyorPsvWiPnI9i2 HaD2ydvutHJVTqX5P2RYDtYromP/WA== =O3jF -----END PGP SIGNATURE----- --ibvzjYYg+QDzMCy1--