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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 307C3C433F5 for ; Sun, 17 Apr 2022 02:21:07 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233135AbiDQCXj (ORCPT ); Sat, 16 Apr 2022 22:23:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230493AbiDQCXi (ORCPT ); Sat, 16 Apr 2022 22:23:38 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6BCF93F88F for ; Sat, 16 Apr 2022 19:21:04 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E19E661053 for ; Sun, 17 Apr 2022 02:21:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C48D4C385A1; Sun, 17 Apr 2022 02:21:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1650162063; bh=3Or5js1bHSpH4RJIQirdiRYbWCrSzV8WTfLcT8C4kQA=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=qlKDgV7wPkiOfcrYcc9REIUB95IQjrh7Ajj2xJAt/OZz0BUH5BTPQnAKMRgmvfkr6 MPW+cedTHRQ3dTqxvcEyiVvfwyj8f6ejWX6Z0/r49BQR78M5AJ1MAzVK2GCx5tuc2o lWaSaL3i3LPe3KFGP1aGXRXYmSoqodyqq97cdBsfs2nhhhQKWr1Vgez8egZz8he1Mq BTo70Xuv3FZ9zdCPvgZYBN9HiBuS9fZiVyEsXJgtCOERWF4jVGVhSchScpLaeL+g2A 8IhcXjEUcIy5YSy0g3g0iZPDyW8pEFOeOo6V1HvGrJpqFyGTc0knaIfvRuMcs7dOjX Exdc9opIyiiiA== Date: Sun, 17 Apr 2022 04:21:00 +0200 From: Wolfram Sang To: Boris Lysov Cc: linux-i2c@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, qii.wang@mediatek.com Subject: Re: [PATCH 2/2] i2c: mediatek: remove mt6577 support Message-ID: Mail-Followup-To: Wolfram Sang , Boris Lysov , linux-i2c@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, qii.wang@mediatek.com References: <20220120185853.24266-1-arzamas-16@mail.ee> <20220120185853.24266-3-arzamas-16@mail.ee> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="07OTgMIzch1L49bR" Content-Disposition: inline In-Reply-To: <20220120185853.24266-3-arzamas-16@mail.ee> Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org --07OTgMIzch1L49bR Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Jan 20, 2022 at 09:58:53PM +0300, Boris Lysov wrote: > The mt6577 compatibility was introduced back in 2014 in commit 8452c80d5b= 4b > ("I2C: mediatek: Add driver for MediaTek I2C controller") by Xudong Chen. >=20 > The i2c-mt65xx driver relies on DMA since it was first introduced. mt6577= does > not support DMA [1] for I2C and doesn't have dedicated DMA engines for I2= C. > Moreover, the entire mt65xx Cortex-A9 SoC family (mt6515, mt6517, mt6575, > and mt6577) which share the same I2C IP doesn't support I2C DMA at all wh= ich > makes this particular driver incompatible with these SoCs. >=20 > The existing code used mt6577 as a "generic" configuration to be used with > other SoCs such as mt6589 (for quirks), and mt2701/mt6797/mt7623 (in gene= ral). >=20 > This patch makes mt2701 (which is *actually* supported by this driver) a = new > placeholder for generic Mediatek I2C bus configuration. >=20 > [1] see references in > https://lists.infradead.org/pipermail/linux-mediatek/2021-October/030333.= html >=20 > Signed-off-by: Boris Lysov Applied to for-next, thanks! --07OTgMIzch1L49bR Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmJbeYwACgkQFA3kzBSg Kbaq9g//fmWkkWK0LIwVeoJtLBXlJYIswv6dgxNCOrHnIt+ddYEt0b7JiB4Tu6TM q8zDoJEnCppxTlLTQmJWaKK8N9pe9+D2Zi5pjdIH+QsuRGYCsrPXs3rgMZZ9qygC HMkWyYgZJOWwC8ON0rGGEJeFbcFKPmjUM4vltY7Ovf591744ZcT3YTkYbeu8L6cL 5BF1jxiO3HR+mF3ppDvOFUj7ssubHPaQt1u8ekExrpPJ/p5qcQA/qXrmX6odskeF vsfrCWtt2Pm3ZhnnDmZZgtRYv0rqBgNLh3E27j2Whg7/dFZXipmIoO1esfqFv7D9 aCLVWZO4DK3DDTIfoTBeO2xFfrd1MWrtnKJQX5Y1djhAU2Q7arWj7Kv1FYtWWnhr Zi0WoRTBfn6jgwt1DMHwGZa29p0VX8ms5ixvfInW2INiaITGhcwF2dnKxWm5fgGA 9MgNlvPk28IqhxpVh7VVoxlMR3tHDpVrlrMQVoU9NtgsSGTDrcgkfwCtB3DcWLF8 NLYTamUNf0rkiRsooqb5hW98sExSbxac+doVQ87RBXycWEtVR8p6uNVGIcu5CgUR pMOQYw1+Z/tEEMh6jOmWaWmKeim4RigL3Sr9BOmlVwTEsEnv73TarKw1kmupRAUu xN0lxxfHjZ/W5YZi8J2cKE6q3N7iG86Ui5Yp7YBZeXWLZAOZ0DI= =gL9Q -----END PGP SIGNATURE----- --07OTgMIzch1L49bR--