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=-8.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_1 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 D8C02C4727C for ; Wed, 30 Sep 2020 16:57:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 878ED2085B for ; Wed, 30 Sep 2020 16:57:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731236AbgI3Q5x (ORCPT ); Wed, 30 Sep 2020 12:57:53 -0400 Received: from mout.kundenserver.de ([212.227.126.134]:36189 "EHLO mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731112AbgI3Q5w (ORCPT ); Wed, 30 Sep 2020 12:57:52 -0400 X-Greylist: delayed 311 seconds by postgrey-1.27 at vger.kernel.org; Wed, 30 Sep 2020 12:57:49 EDT Received: from [192.168.1.173] ([37.4.249.194]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M6lxe-1kKtvI2KFy-008J9f; Wed, 30 Sep 2020 18:52:18 +0200 Subject: Re: [PATCH v5 80/80] ARM: dts: bcm2711: Enable the display pipeline To: Nathan Chancellor , Maxime Ripard Cc: Nicolas Saenz Julienne , Eric Anholt , Tim Gover , Dave Stevenson , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Hoegeun Kwon , Chanwoo Choi , bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Phil Elwell , linux-arm-kernel@lists.infradead.org References: <20200929221526.GA1370981@ubuntu-m3-large-x86> <20200930140758.gummt3umouva3wyu@gilmour.lan> <20200930163823.GA237050@ubuntu-m3-large-x86> From: Stefan Wahren Autocrypt: addr=stefan.wahren@i2se.com; 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1.0 In-Reply-To: <20200930163823.GA237050@ubuntu-m3-large-x86> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Provags-ID: V03:K1:E9Rk/K/gMH92DqJLWrbfP4Ciq1ARTulMrAvAOlEzpdEClW8QkUu MxbuhJVUlEI22OHRmUcGjtbjPkaNIeNOJ4XWJWLeKKw88Fa2e1xUgIQsbWjhO5pW5XTFAO9 QbxEj7duKz9WidlyupBsZGrtoTbm9oFLck25kvHjW7Kn9mvtF0nuC6kWWG0hd2LhrknpUjp 0ZWr5eRZLx6FaTjU2p4Xg== X-UI-Out-Filterresults: notjunk:1;V03:K0:4WXWGay/9zA=:ZNQ5+MCd5ad/GljGQJY1kt KxuM6AVjMbe9RZxgttCoI0BAiVZjWKcBEKd2S/TmryVxWRj/SBNeo7QAkxzmh7UKfP8icKvgA WJLHy5oUkIroJiS1JB7/s1Bcv2K3I9sx1fVFOp6sLxNXmaWvSz4Ah8mUPN7RlowqQ0iOmx0ww sJ762mqTUgmDqzOZITN3pM33gngEIrlikBJ077W+LnK00odQZm9dYk9/hlXlyt/sQ5kxsE7BZ DAI14ZUNnuVrDzU3xx6kmTdaL9hx8pwVrsxFXq+BfC+UZxjppIlgeBWIxeFbJaaCjZiXUnm9l 1+kp7BzmvibRivfpQqQb9iqQR0gsHXXhJXavX4Po170jcOWIjaAPhjTAoHWYoi0sto6Nr3rUk SGvBFWUhl5ea2YzHFfqfPQHyPijcMV3xmG4DUAl+f54sIlRyn64oGDj+a6yGX4A0ZQjdDWvoW Xqc72N3PmtRiON9yZW1yiMfK/n5TDc9gVhAXlrM5wdhxnF6BvU1aX5w33c4IKfJPCO12WteP7 Z7lxQ4frtSbeTB52nKWiSb0Dldnaodjvp80DK+SmqEOqONKR/aKN7siou1shApWR1kMIBdzxC 6jwDwSWegpwzTe7XGIIVPhMiv1DjNjHMpXovxB8n5dLBjPWENR3jPLu0NpW+1EfP/Me7eUkLy 9IJKoSM5VuGnwz4Wue+j6aPPRF67ohvFOF7uf0qbnEaGvsRgHDr1VuKryEJi6WocRYA/F00EY kB/l4YcB9jaDqbSvs6XNR52lRvIt5racQc+CndFRFOCyMTkl517Ks21E9aUN0ypi+NLdt7axk uVtkKQuQaxKay7/Uop2iChH7BQ6+A5UcnpVVd7Vqe+44BbsqBMeypQWX+nIgkTv0C6vbwC5 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Am 30.09.20 um 18:38 schrieb Nathan Chancellor: > On Wed, Sep 30, 2020 at 04:07:58PM +0200, Maxime Ripard wrote: >> Hi Nathan, >> >> On Tue, Sep 29, 2020 at 03:15:26PM -0700, Nathan Chancellor wrote: >>> On Thu, Sep 03, 2020 at 10:01:52AM +0200, Maxime Ripard wrote: >>>> Now that all the drivers have been adjusted for it, let's bring in the >>>> necessary device tree changes. >>>> >>>> The VEC and PV3 are left out for now, since it will require a more specific >>>> clock setup. >>>> >>>> Reviewed-by: Dave Stevenson >>>> Tested-by: Chanwoo Choi >>>> Tested-by: Hoegeun Kwon >>>> Tested-by: Stefan Wahren >>>> Signed-off-by: Maxime Ripard >>> Apologies if this has already been reported or have a solution but this >>> patch (and presumably series) breaks output to the serial console after >>> a certain point during init. On Raspbian, I see systemd startup messages >>> then the output just turns into complete garbage. It looks like this >>> patch is merged first in linux-next, which is why my bisect fell on the >>> DRM merge. I am happy to provide whatever information could be helpful >>> for debugging this. I am on the latest version of the firmware >>> (currently 26620cc9a63c6cb9965374d509479b4ee2c30241). >> Unfortunately, the miniUART is in the same clock tree than the core >> clock and will thus have those kind of issues when the core clock is >> changed (which is also something that one should expect when using the >> DRM or other drivers). >> >> The only real workaround there would be to switch to one of the PL011 >> UARTs. I guess we can also somehow make the UART react to the core clock >> frequency changes, but that's going to require some effort >> >> Maxime > Ack, thank you for the reply! There does not really seem to be a whole > ton of documentation around using one of the other PL011 UARTs so for > now, I will just revert this commit locally. there was a patch series & discussion about this topic, but we finally didn't find a rock solid solution. You can have a look at "[RFC 5/5] serial: 8250: bcm2835aux: add notifier to follow clock changes" from 3.4.2019 on linux-rpi-kernel. Best regards > > Cheers, > Nathan 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=-9.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 D54EDC4741F for ; Wed, 30 Sep 2020 16:54:09 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 812252076B for ; Wed, 30 Sep 2020 16:54:09 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit 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Message-ID: Date: Wed, 30 Sep 2020 18:52:13 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200930163823.GA237050@ubuntu-m3-large-x86> Content-Language: en-US X-Provags-ID: V03:K1:E9Rk/K/gMH92DqJLWrbfP4Ciq1ARTulMrAvAOlEzpdEClW8QkUu MxbuhJVUlEI22OHRmUcGjtbjPkaNIeNOJ4XWJWLeKKw88Fa2e1xUgIQsbWjhO5pW5XTFAO9 QbxEj7duKz9WidlyupBsZGrtoTbm9oFLck25kvHjW7Kn9mvtF0nuC6kWWG0hd2LhrknpUjp 0ZWr5eRZLx6FaTjU2p4Xg== X-UI-Out-Filterresults: notjunk:1;V03:K0:fle1dDvlAP0=:DGe+IRN4aVEwzuiT1G5tek 9xbgicpxoupTK0nu0VDpyJsnSiBHNb1bBfpAOgsmfphdSFBmaIQMklJO1XEIQ/mb/PcM21RHB 8pE/07Q2TSr1QNv5stU9g4gOwmON/cjF5+ctW30By14mNcKRH0+kdrd3pbyuOrBDxK/hYHruj 9cztU+1SrQJAiERLWJKa+kvRlDXVmxXgFffHfodTaTJNmI9TRCLcJoR1BxYSy5v0B3b7/1/6f w/QTMsgTfyqh552OyayFfGdgvB8LB7M/HaZ6dqjw6G6Hl+Kvqbz821MsOIoebkuSnFiTOFopZ 6hq1DJHDzDMRHD5HWtL61XiGoewnSwnjNEFy80pQGjKVo9ngEmvwRXCHjuwb7yBcqs7eoxhfW rdgIEmw38pLkwEJ2VgVoxLbT3uoo7k1O0LCwYII4YTiqJgqzOQpvdc1XFYM5up/qp9SybzdbL 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linux-rpi-kernel@lists.infradead.org, Hoegeun Kwon , Nicolas Saenz Julienne 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 Hi, Am 30.09.20 um 18:38 schrieb Nathan Chancellor: > On Wed, Sep 30, 2020 at 04:07:58PM +0200, Maxime Ripard wrote: >> Hi Nathan, >> >> On Tue, Sep 29, 2020 at 03:15:26PM -0700, Nathan Chancellor wrote: >>> On Thu, Sep 03, 2020 at 10:01:52AM +0200, Maxime Ripard wrote: >>>> Now that all the drivers have been adjusted for it, let's bring in the >>>> necessary device tree changes. >>>> >>>> The VEC and PV3 are left out for now, since it will require a more specific >>>> clock setup. >>>> >>>> Reviewed-by: Dave Stevenson >>>> Tested-by: Chanwoo Choi >>>> Tested-by: Hoegeun Kwon >>>> Tested-by: Stefan Wahren >>>> Signed-off-by: Maxime Ripard >>> Apologies if this has already been reported or have a solution but this >>> patch (and presumably series) breaks output to the serial console after >>> a certain point during init. On Raspbian, I see systemd startup messages >>> then the output just turns into complete garbage. It looks like this >>> patch is merged first in linux-next, which is why my bisect fell on the >>> DRM merge. I am happy to provide whatever information could be helpful >>> for debugging this. I am on the latest version of the firmware >>> (currently 26620cc9a63c6cb9965374d509479b4ee2c30241). >> Unfortunately, the miniUART is in the same clock tree than the core >> clock and will thus have those kind of issues when the core clock is >> changed (which is also something that one should expect when using the >> DRM or other drivers). >> >> The only real workaround there would be to switch to one of the PL011 >> UARTs. I guess we can also somehow make the UART react to the core clock >> frequency changes, but that's going to require some effort >> >> Maxime > Ack, thank you for the reply! There does not really seem to be a whole > ton of documentation around using one of the other PL011 UARTs so for > now, I will just revert this commit locally. there was a patch series & discussion about this topic, but we finally didn't find a rock solid solution. You can have a look at "[RFC 5/5] serial: 8250: bcm2835aux: add notifier to follow clock changes" from 3.4.2019 on linux-rpi-kernel. Best regards > > Cheers, > Nathan _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel 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=-8.5 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,NICE_REPLY_A,SIGNED_OFF_BY, 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 BCFDBC4727E for ; Wed, 30 Sep 2020 16:52:33 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 4AEA4206C9 for ; Wed, 30 Sep 2020 16:52:33 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4AEA4206C9 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=i2se.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 90E236E02B; Wed, 30 Sep 2020 16:52:32 +0000 (UTC) Received: from mout.kundenserver.de (mout.kundenserver.de [212.227.126.187]) by gabe.freedesktop.org (Postfix) with ESMTPS id EFFA86E02B for ; Wed, 30 Sep 2020 16:52:30 +0000 (UTC) Received: from [192.168.1.173] ([37.4.249.194]) by mrelayeu.kundenserver.de (mreue009 [212.227.15.167]) with ESMTPSA (Nemesis) id 1M6lxe-1kKtvI2KFy-008J9f; Wed, 30 Sep 2020 18:52:18 +0200 Subject: Re: [PATCH v5 80/80] ARM: dts: bcm2711: Enable the display pipeline To: Nathan Chancellor , Maxime Ripard References: 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bcm-kernel-feedback-list@broadcom.com, linux-rpi-kernel@lists.infradead.org, Hoegeun Kwon , Nicolas Saenz Julienne Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi, Am 30.09.20 um 18:38 schrieb Nathan Chancellor: > On Wed, Sep 30, 2020 at 04:07:58PM +0200, Maxime Ripard wrote: >> Hi Nathan, >> >> On Tue, Sep 29, 2020 at 03:15:26PM -0700, Nathan Chancellor wrote: >>> On Thu, Sep 03, 2020 at 10:01:52AM +0200, Maxime Ripard wrote: >>>> Now that all the drivers have been adjusted for it, let's bring in the >>>> necessary device tree changes. >>>> >>>> The VEC and PV3 are left out for now, since it will require a more specific >>>> clock setup. >>>> >>>> Reviewed-by: Dave Stevenson >>>> Tested-by: Chanwoo Choi >>>> Tested-by: Hoegeun Kwon >>>> Tested-by: Stefan Wahren >>>> Signed-off-by: Maxime Ripard >>> Apologies if this has already been reported or have a solution but this >>> patch (and presumably series) breaks output to the serial console after >>> a certain point during init. On Raspbian, I see systemd startup messages >>> then the output just turns into complete garbage. It looks like this >>> patch is merged first in linux-next, which is why my bisect fell on the >>> DRM merge. I am happy to provide whatever information could be helpful >>> for debugging this. I am on the latest version of the firmware >>> (currently 26620cc9a63c6cb9965374d509479b4ee2c30241). >> Unfortunately, the miniUART is in the same clock tree than the core >> clock and will thus have those kind of issues when the core clock is >> changed (which is also something that one should expect when using the >> DRM or other drivers). >> >> The only real workaround there would be to switch to one of the PL011 >> UARTs. I guess we can also somehow make the UART react to the core clock >> frequency changes, but that's going to require some effort >> >> Maxime > Ack, thank you for the reply! There does not really seem to be a whole > ton of documentation around using one of the other PL011 UARTs so for > now, I will just revert this commit locally. there was a patch series & discussion about this topic, but we finally didn't find a rock solid solution. You can have a look at "[RFC 5/5] serial: 8250: bcm2835aux: add notifier to follow clock changes" from 3.4.2019 on linux-rpi-kernel. Best regards > > Cheers, > Nathan _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel