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=-8.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable 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 AC189C433B4 for ; Sat, 17 Apr 2021 20:09:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8875F610CB for ; Sat, 17 Apr 2021 20:09:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237010AbhDQUJx (ORCPT ); Sat, 17 Apr 2021 16:09:53 -0400 Received: from sauhun.de ([88.99.104.3]:38836 "EHLO pokefinder.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236491AbhDQUJw (ORCPT ); Sat, 17 Apr 2021 16:09:52 -0400 Received: from localhost (p5486c83a.dip0.t-ipconnect.de [84.134.200.58]) by pokefinder.org (Postfix) with ESMTPSA id 5CAB62C04D8; Sat, 17 Apr 2021 22:09:24 +0200 (CEST) Date: Sat, 17 Apr 2021 22:09:23 +0200 From: Wolfram Sang To: Qii Wang Cc: matthias.bgg@gmail.com, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com, leilk.liu@mediatek.com Subject: Re: [PATCH 3/3] i2c: mediatek: Use scl_int_delay_ns to compensate clock-stretching Message-ID: <20210417200923.GD9996@kunai> Mail-Followup-To: Wolfram Sang , Qii Wang , matthias.bgg@gmail.com, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com, leilk.liu@mediatek.com References: <1618642012-10444-1-git-send-email-qii.wang@mediatek.com> <1618642012-10444-4-git-send-email-qii.wang@mediatek.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="9UV9rz0O2dU/yYYn" Content-Disposition: inline In-Reply-To: <1618642012-10444-4-git-send-email-qii.wang@mediatek.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --9UV9rz0O2dU/yYYn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 17, 2021 at 02:46:52PM +0800, Qii Wang wrote: > The parameters of tSU,STA/tHD,STA/tSU,STOP maybe out of spec due > to device clock-stretch or circuit loss, we could get a suitable > scl_int_delay_ns from i2c_timings to compensate these parameters > to meet the spec via EXT_CONF register. >=20 > Signed-off-by: Qii Wang Applied to for-next, thanks! --9UV9rz0O2dU/yYYn Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmB7QHMACgkQFA3kzBSg Kba+NBAAn6JF4qXFNrDhGxvLXRTjPqXUMD6/NwnxMpuk8enYQIOz18Y+jbXlbNNb 3lLX/OuSDB4Veclu/q5/EW5DH/066q7DAp3WkVkxXEOqsP5KgfsjxKy0RH166WtX 7Xo1bUecsTdlqFxO8SObPsid2FDabhoEAKCuQ3bhkr1vjuW7dLra0ZgzK/CE4tnP 8HlqKkzY9VYeXKjVi/GnjadVLsfcX8Q47DwlTJ4f+G2zBAWwoXGio48FJkZsZagW STxoSdOE17gvIk3O+0MzfuCbam8XtJmgfo68CmouIPKNaJcB4i6WAkJYr05U1lQ6 LYhnJyDZ0ytDGpDlRnTyfJbSdQaeecuCXoIxDgYOOXoed3rjqQ10ZmaTC7nygj1v FDOV3OMEEzbjSysFb1/V6QMdlRxELSDxXNS2HtEpqspCAkIl3PMM1Xvfz8gW/WG+ wyuEpgtDYPhtv7SxOrOFJxb8aRJcVCEbjyV4T1IoMzQYzvAmZxmNdRwRuTC7429G Ou8qgEa2QsblpDzUoFhmFjwJp10qBt7I27L2EH9xVRPmeQa+wqCg2+AHVbSlQWOu /QhPt8MG4bZSM887RT5tVfof6eyXeJ6OmA8GkMz5UnmD+ReUEiAmoGeWvaBh5b9J WHCXZgcvNMgTBG8WuU0MuFjQclhQ9bfujZcMaABjmiZVBR8ssyQ= =z08x -----END PGP SIGNATURE----- --9UV9rz0O2dU/yYYn-- 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=-8.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 714EEC433ED for ; Sat, 17 Apr 2021 20:09:53 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 3CFB961245 for ; Sat, 17 Apr 2021 20:09:53 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3CFB961245 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=the-dreams.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender: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-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=pfADg7iJ6RTv374tQ8HMi3dpzeePMSzYXEhSKv7Ii/A=; b=qNFW4Uw8/N4gIypW+cVlc4PN8 I2vaBD3FsXRK3Dw1hPNKxFgyWaJGVrM+Eu5cAu4uH7KkJ0MlwHwqmWrvmD4ZOOoHzvkXr58GCg0vr 8tbgMoDT1cEgx4oocKSmrt3UNfhtdo43N6VlL3sD1KbJUfGjbWuKQDGLa0cXLzzxSFMWwQwa0bwUh WQAbAsaHWZaGENnU+QhrFLqr91cioXsadQ2AsABflzq0JJ1wXYcEmWGLR/J8F97P4fq33n65NygKo tmUYUcvsry0BvBnYoq/U+hxJ8LpWtQX40KWYa+JqlpyxstimGaSjeCzMu0JyzgkjJOtxTN/XXgYeW pt6YLeFrw==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lXrG9-0069RT-DI; Sat, 17 Apr 2021 20:09:41 +0000 Received: from sauhun.de ([88.99.104.3] helo=pokefinder.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lXrFw-0069Pb-Nv; Sat, 17 Apr 2021 20:09:30 +0000 Received: from localhost (p5486c83a.dip0.t-ipconnect.de [84.134.200.58]) by pokefinder.org (Postfix) with ESMTPSA id 5CAB62C04D8; Sat, 17 Apr 2021 22:09:24 +0200 (CEST) Date: Sat, 17 Apr 2021 22:09:23 +0200 From: Wolfram Sang To: Qii Wang Cc: matthias.bgg@gmail.com, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com, leilk.liu@mediatek.com Subject: Re: [PATCH 3/3] i2c: mediatek: Use scl_int_delay_ns to compensate clock-stretching Message-ID: <20210417200923.GD9996@kunai> Mail-Followup-To: Wolfram Sang , Qii Wang , matthias.bgg@gmail.com, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com, leilk.liu@mediatek.com References: <1618642012-10444-1-git-send-email-qii.wang@mediatek.com> <1618642012-10444-4-git-send-email-qii.wang@mediatek.com> MIME-Version: 1.0 In-Reply-To: <1618642012-10444-4-git-send-email-qii.wang@mediatek.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210417_210928_850860_ECB37661 X-CRM114-Status: UNSURE ( 8.63 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@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: multipart/mixed; boundary="===============6648058263623918533==" Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org --===============6648058263623918533== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="9UV9rz0O2dU/yYYn" Content-Disposition: inline --9UV9rz0O2dU/yYYn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 17, 2021 at 02:46:52PM +0800, Qii Wang wrote: > The parameters of tSU,STA/tHD,STA/tSU,STOP maybe out of spec due > to device clock-stretch or circuit loss, we could get a suitable > scl_int_delay_ns from i2c_timings to compensate these parameters > to meet the spec via EXT_CONF register. >=20 > Signed-off-by: Qii Wang Applied to for-next, thanks! --9UV9rz0O2dU/yYYn Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmB7QHMACgkQFA3kzBSg Kba+NBAAn6JF4qXFNrDhGxvLXRTjPqXUMD6/NwnxMpuk8enYQIOz18Y+jbXlbNNb 3lLX/OuSDB4Veclu/q5/EW5DH/066q7DAp3WkVkxXEOqsP5KgfsjxKy0RH166WtX 7Xo1bUecsTdlqFxO8SObPsid2FDabhoEAKCuQ3bhkr1vjuW7dLra0ZgzK/CE4tnP 8HlqKkzY9VYeXKjVi/GnjadVLsfcX8Q47DwlTJ4f+G2zBAWwoXGio48FJkZsZagW STxoSdOE17gvIk3O+0MzfuCbam8XtJmgfo68CmouIPKNaJcB4i6WAkJYr05U1lQ6 LYhnJyDZ0ytDGpDlRnTyfJbSdQaeecuCXoIxDgYOOXoed3rjqQ10ZmaTC7nygj1v FDOV3OMEEzbjSysFb1/V6QMdlRxELSDxXNS2HtEpqspCAkIl3PMM1Xvfz8gW/WG+ wyuEpgtDYPhtv7SxOrOFJxb8aRJcVCEbjyV4T1IoMzQYzvAmZxmNdRwRuTC7429G Ou8qgEa2QsblpDzUoFhmFjwJp10qBt7I27L2EH9xVRPmeQa+wqCg2+AHVbSlQWOu /QhPt8MG4bZSM887RT5tVfof6eyXeJ6OmA8GkMz5UnmD+ReUEiAmoGeWvaBh5b9J WHCXZgcvNMgTBG8WuU0MuFjQclhQ9bfujZcMaABjmiZVBR8ssyQ= =z08x -----END PGP SIGNATURE----- --9UV9rz0O2dU/yYYn-- --===============6648058263623918533== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek --===============6648058263623918533==-- 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=-8.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 84955C433B4 for ; Sat, 17 Apr 2021 20:11:21 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 490F661245 for ; Sat, 17 Apr 2021 20:11:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 490F661245 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=the-dreams.de Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; h=Sender: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-Transfer-Encoding:Content-ID:Content-Description:Resent-Date :Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=lGPZLCIw9ZaX7hEcIKTQRWRIw51AxpKQfxh6iWPAn/w=; b=QMf/zedrEPG6PEPgnsjbHxq4i C637o1G8ODKdEY509pG5i70dj7Kt/3kFDMghtapVJ3uKVCksrPQMuPsqVnBI7E/eEdmQ8w557yVKn kLs9g/iHDHk4J7uaoa+NAwttqAwSxgOFRAPitgVQ4ESOrSLim7wFGOqOP/y1ZAz+8I8sh4rh6sPmH 2Xcd6b//9ajXV03Gz5450+A0anTLXWOV80FiGEbogiNzKyCqO9qrIhoLr61Z6543xvc6MYOy+VbJR Doq9NGX1U6vct4SAU0b5oghu7L7ISTAAblKPhXxRqMxyJPUH9DsY+/7TmywcBtYyP9ZV6dhMwgpbF 3/DV9shFQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lXrG1-0069QS-IT; Sat, 17 Apr 2021 20:09:33 +0000 Received: from sauhun.de ([88.99.104.3] helo=pokefinder.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lXrFw-0069Pb-Nv; Sat, 17 Apr 2021 20:09:30 +0000 Received: from localhost (p5486c83a.dip0.t-ipconnect.de [84.134.200.58]) by pokefinder.org (Postfix) with ESMTPSA id 5CAB62C04D8; Sat, 17 Apr 2021 22:09:24 +0200 (CEST) Date: Sat, 17 Apr 2021 22:09:23 +0200 From: Wolfram Sang To: Qii Wang Cc: matthias.bgg@gmail.com, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com, leilk.liu@mediatek.com Subject: Re: [PATCH 3/3] i2c: mediatek: Use scl_int_delay_ns to compensate clock-stretching Message-ID: <20210417200923.GD9996@kunai> Mail-Followup-To: Wolfram Sang , Qii Wang , matthias.bgg@gmail.com, linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-mediatek@lists.infradead.org, srv_heupstream@mediatek.com, leilk.liu@mediatek.com References: <1618642012-10444-1-git-send-email-qii.wang@mediatek.com> <1618642012-10444-4-git-send-email-qii.wang@mediatek.com> MIME-Version: 1.0 In-Reply-To: <1618642012-10444-4-git-send-email-qii.wang@mediatek.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210417_210928_850860_ECB37661 X-CRM114-Status: UNSURE ( 8.63 ) X-CRM114-Notice: Please train this message. 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: multipart/mixed; boundary="===============4369883631915745790==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============4369883631915745790== Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="9UV9rz0O2dU/yYYn" Content-Disposition: inline --9UV9rz0O2dU/yYYn Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Apr 17, 2021 at 02:46:52PM +0800, Qii Wang wrote: > The parameters of tSU,STA/tHD,STA/tSU,STOP maybe out of spec due > to device clock-stretch or circuit loss, we could get a suitable > scl_int_delay_ns from i2c_timings to compensate these parameters > to meet the spec via EXT_CONF register. >=20 > Signed-off-by: Qii Wang Applied to for-next, thanks! --9UV9rz0O2dU/yYYn Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEOZGx6rniZ1Gk92RdFA3kzBSgKbYFAmB7QHMACgkQFA3kzBSg Kba+NBAAn6JF4qXFNrDhGxvLXRTjPqXUMD6/NwnxMpuk8enYQIOz18Y+jbXlbNNb 3lLX/OuSDB4Veclu/q5/EW5DH/066q7DAp3WkVkxXEOqsP5KgfsjxKy0RH166WtX 7Xo1bUecsTdlqFxO8SObPsid2FDabhoEAKCuQ3bhkr1vjuW7dLra0ZgzK/CE4tnP 8HlqKkzY9VYeXKjVi/GnjadVLsfcX8Q47DwlTJ4f+G2zBAWwoXGio48FJkZsZagW STxoSdOE17gvIk3O+0MzfuCbam8XtJmgfo68CmouIPKNaJcB4i6WAkJYr05U1lQ6 LYhnJyDZ0ytDGpDlRnTyfJbSdQaeecuCXoIxDgYOOXoed3rjqQ10ZmaTC7nygj1v FDOV3OMEEzbjSysFb1/V6QMdlRxELSDxXNS2HtEpqspCAkIl3PMM1Xvfz8gW/WG+ wyuEpgtDYPhtv7SxOrOFJxb8aRJcVCEbjyV4T1IoMzQYzvAmZxmNdRwRuTC7429G Ou8qgEa2QsblpDzUoFhmFjwJp10qBt7I27L2EH9xVRPmeQa+wqCg2+AHVbSlQWOu /QhPt8MG4bZSM887RT5tVfof6eyXeJ6OmA8GkMz5UnmD+ReUEiAmoGeWvaBh5b9J WHCXZgcvNMgTBG8WuU0MuFjQclhQ9bfujZcMaABjmiZVBR8ssyQ= =z08x -----END PGP SIGNATURE----- --9UV9rz0O2dU/yYYn-- --===============4369883631915745790== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============4369883631915745790==--