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=-10.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 86FF7C4338F for ; Sun, 25 Jul 2021 17:14:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6865D60F41 for ; Sun, 25 Jul 2021 17:14:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230110AbhGYQdi (ORCPT ); Sun, 25 Jul 2021 12:33:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55210 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230075AbhGYQdi (ORCPT ); Sun, 25 Jul 2021 12:33:38 -0400 Received: from mail-ej1-x62f.google.com (mail-ej1-x62f.google.com [IPv6:2a00:1450:4864:20::62f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7DC8DC061760 for ; Sun, 25 Jul 2021 10:14:08 -0700 (PDT) Received: by mail-ej1-x62f.google.com with SMTP id he41so12625846ejc.6 for ; Sun, 25 Jul 2021 10:14:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=H3RPOWBRf2k2synG3wrZwitti/PedojQEmKKrIh2UUo=; b=TH2gxgFULV3Btg8IqnkRewzfEIxAXYMpVn2yzlu582rw3Tkd6LO0hyYodBGl+z3oOG FCCEjmdxW1A8AOt5F8w+i6QkbHU5HZJ6cl68r8LuL4Tj7K2bwik3XqCiX4ybx0XqDenN voy9QGTXoRAhRVXYCmsSBDR824M8vqCCNStoI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=H3RPOWBRf2k2synG3wrZwitti/PedojQEmKKrIh2UUo=; b=jujzJkBW//AKQV4dmu/mAfe39ZCADQmGMsoMJ1I8U2efZmTcHjPq/Q4iLxjpTBKavv eetaaTzFdgtTsu9fEpVTJei0bIq/uf3ZLc2JYNiMzhTQ3gpAjwdOF+Q3xeYMiBlOTXUU a4XAAS78uDGWHRp+AnCo+uZid2dD4qImJxBAkXCz/rGWouxu5IqPQZ35lxNo8u/Abtvz aJECPMqj6taNiAbOIRjtXGPUjjLTuJtBPTQm5uPx+zPJbvwEwM88v4c9WDFwgumEkFPN DBHwBzXFgn1etmFKIPfIAgXSAtutEIO0cf7AVFbRs2UfbryyK1yzI8a7AzvBPmhXMcST /XxA== X-Gm-Message-State: AOAM530qFlH6UqQmJY0tRAkt/9I1woWH+O4iSTvv056QhJO8l9N6DUHo T8ZPBtOYEfTIvNKf5MNhfpCE9TrgjYOK26rZxwn2Pw== X-Google-Smtp-Source: ABdhPJxHwHQXUhyRK5a5X9ubPP7qAlXX/q2WPa8HKt6EPPQlN1ZOYkiGslGAR5j+VSADs9ttExe8DXD7AN113IbTGAQ= X-Received: by 2002:a17:906:368e:: with SMTP id a14mr14034879ejc.60.1627233247000; Sun, 25 Jul 2021 10:14:07 -0700 (PDT) MIME-Version: 1.0 References: <20210704090230.26489-1-jagan@amarulasolutions.com> In-Reply-To: From: Jagan Teki Date: Sun, 25 Jul 2021 22:43:55 +0530 Message-ID: Subject: Re: [RFC PATCH 00/17] drm: bridge: Samsung MIPI DSIM bridge To: Sam Ravnborg Cc: Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Frieder Schrempf , Daniel Vetter , Marek Vasut , Krzysztof Kozlowski , Fabio Estevam , devicetree , linux-samsung-soc@vger.kernel.org, dri-devel , NXP Linux Team , linux-amarula , linux-arm-kernel Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi Sam, On Sun, Jul 25, 2021 at 10:35 PM Sam Ravnborg wrote: > > Hi Jagan, > > On Sun, Jul 04, 2021 at 02:32:13PM +0530, Jagan Teki wrote: > > This series supports common bridge support for Samsung MIPI DSIM > > which is used in Exynos and i.MX8MM SoC's. > > > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > > > Right now bridge offers two sets of implementations. > > > > A. With component_ops and exynos specific code exclusively for > > exynos dsi drivers and it's legacy bindings. > > > > B. Without componenet_ops for newly implemented bridges and its > > users like i.MX8MM. > > > > The future plan is to fix the implementation A) by dropping > > component_ops and fixing exynos specific code in order to make > > the bridge more mature to use and the same is mentioned in > > drivers TODO. > > > > Patch 0001 - 0006: Bridge conversion > > Patch 0007 - 0017: Samsung MIPI DSIM bridge fixes, additions > > > > Tested in Engicam i.Core MX8M Mini SoM. > > > > Anyone interest, please have a look on this repo > > https://github.com/openedev/linux/tree/070421-imx8mm-dsim > > > > Would appreciate anyone from the exynos team to test it on > > the exynos platform? > > > > Any inputs? > > I really like where you are headign with this! > No testing - sorry. But I will try to provide a bit of feedback on the > individual patches. > > I hope you find a way to move forward with this. Thanks for the response. We have found some issues with Bridge conversion on existing exynos drivers. The component based DSI drivers(like exynos) are difficult to attach if it involves kms hotplug. kms hotplug would require drm pointer and that pointer would only available after the bind call finishes. But the bridge attach in bind call will defer till it find the attached bridge. Right now I'm trying to find the proper way to attach the bridges for component based DSI drivers which involves kms hot-plug. If you have any ideas on this, please let me know. Thanks, Jagan. 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=-9.5 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 CD49EC4338F for ; Sun, 25 Jul 2021 17:16:05 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 92C4360E77 for ; Sun, 25 Jul 2021 17:16:05 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 92C4360E77 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amarulasolutions.com Authentication-Results: mail.kernel.org; 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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 Sam, On Sun, Jul 25, 2021 at 10:35 PM Sam Ravnborg wrote: > > Hi Jagan, > > On Sun, Jul 04, 2021 at 02:32:13PM +0530, Jagan Teki wrote: > > This series supports common bridge support for Samsung MIPI DSIM > > which is used in Exynos and i.MX8MM SoC's. > > > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > > > Right now bridge offers two sets of implementations. > > > > A. With component_ops and exynos specific code exclusively for > > exynos dsi drivers and it's legacy bindings. > > > > B. Without componenet_ops for newly implemented bridges and its > > users like i.MX8MM. > > > > The future plan is to fix the implementation A) by dropping > > component_ops and fixing exynos specific code in order to make > > the bridge more mature to use and the same is mentioned in > > drivers TODO. > > > > Patch 0001 - 0006: Bridge conversion > > Patch 0007 - 0017: Samsung MIPI DSIM bridge fixes, additions > > > > Tested in Engicam i.Core MX8M Mini SoM. > > > > Anyone interest, please have a look on this repo > > https://github.com/openedev/linux/tree/070421-imx8mm-dsim > > > > Would appreciate anyone from the exynos team to test it on > > the exynos platform? > > > > Any inputs? > > I really like where you are headign with this! > No testing - sorry. But I will try to provide a bit of feedback on the > individual patches. > > I hope you find a way to move forward with this. Thanks for the response. We have found some issues with Bridge conversion on existing exynos drivers. The component based DSI drivers(like exynos) are difficult to attach if it involves kms hotplug. kms hotplug would require drm pointer and that pointer would only available after the bind call finishes. But the bridge attach in bind call will defer till it find the attached bridge. Right now I'm trying to find the proper way to attach the bridges for component based DSI drivers which involves kms hot-plug. If you have any ideas on this, please let me know. Thanks, Jagan. _______________________________________________ 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=-8.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS 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 91EB8C432BE for ; Sun, 25 Jul 2021 17:14:11 +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 BDB3A60E77 for ; Sun, 25 Jul 2021 17:14:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org BDB3A60E77 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=amarulasolutions.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 29BD86E431; Sun, 25 Jul 2021 17:14:10 +0000 (UTC) Received: from mail-ej1-x62e.google.com (mail-ej1-x62e.google.com [IPv6:2a00:1450:4864:20::62e]) by gabe.freedesktop.org (Postfix) with ESMTPS id 43ADD6E431 for ; Sun, 25 Jul 2021 17:14:08 +0000 (UTC) Received: by mail-ej1-x62e.google.com with SMTP id gn26so6524606ejc.3 for ; Sun, 25 Jul 2021 10:14:08 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=H3RPOWBRf2k2synG3wrZwitti/PedojQEmKKrIh2UUo=; b=TH2gxgFULV3Btg8IqnkRewzfEIxAXYMpVn2yzlu582rw3Tkd6LO0hyYodBGl+z3oOG FCCEjmdxW1A8AOt5F8w+i6QkbHU5HZJ6cl68r8LuL4Tj7K2bwik3XqCiX4ybx0XqDenN voy9QGTXoRAhRVXYCmsSBDR824M8vqCCNStoI= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=H3RPOWBRf2k2synG3wrZwitti/PedojQEmKKrIh2UUo=; b=kJ8jan53rj+MpAQ4azMWVZAlVrudB2Y39YKgkkwfUysTGkf0ulfh1rjlbQsj8n3yWN HuQaBEUk30rbJWUtPH4pQaiooEG+EL+Py68L+jT2hDjQfXbYegLg4guEWmCFmvyiKxqy S9ztLSgETaR92gvP/8iqwYkRqmMmgB+ElHwV2uXOqv98r55tfQInil3yillXmhKD+OWA CfKhoqQOPqWepHJoLQ4AxcPhm+RUt7yizOGz1O/dscCEvEhucedefz/QCJb8Vq9TcQZH RU/rb6u/4PpwtGZO3TGVfZq9gHt1GlXoe+z45ctMvy+zhtVFEIq1DIAYBi+UwGniNFup GpUA== X-Gm-Message-State: AOAM531vOxfoRL/kTmPQH8POXsDNY/xaxCH0wQWe2CmK64nbzf9LEPXr YbtsomNF6YOyfO4yVErwnNqxtf+6CWCrO4XhD8mNTA== X-Google-Smtp-Source: ABdhPJxHwHQXUhyRK5a5X9ubPP7qAlXX/q2WPa8HKt6EPPQlN1ZOYkiGslGAR5j+VSADs9ttExe8DXD7AN113IbTGAQ= X-Received: by 2002:a17:906:368e:: with SMTP id a14mr14034879ejc.60.1627233247000; Sun, 25 Jul 2021 10:14:07 -0700 (PDT) MIME-Version: 1.0 References: <20210704090230.26489-1-jagan@amarulasolutions.com> In-Reply-To: From: Jagan Teki Date: Sun, 25 Jul 2021 22:43:55 +0530 Message-ID: Subject: Re: [RFC PATCH 00/17] drm: bridge: Samsung MIPI DSIM bridge To: Sam Ravnborg Content-Type: text/plain; charset="UTF-8" X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Marek Vasut , devicetree , linux-samsung-soc@vger.kernel.org, Joonyoung Shim , Neil Armstrong , linux-amarula , dri-devel , Krzysztof Kozlowski , Seung-Woo Kim , Robert Foss , Frieder Schrempf , Andrzej Hajda , Kyungmin Park , Laurent Pinchart , Daniel Vetter , linux-arm-kernel , NXP Linux Team Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi Sam, On Sun, Jul 25, 2021 at 10:35 PM Sam Ravnborg wrote: > > Hi Jagan, > > On Sun, Jul 04, 2021 at 02:32:13PM +0530, Jagan Teki wrote: > > This series supports common bridge support for Samsung MIPI DSIM > > which is used in Exynos and i.MX8MM SoC's. > > > > The final bridge supports both the Exynos and i.MX8MM DSI devices. > > > > Right now bridge offers two sets of implementations. > > > > A. With component_ops and exynos specific code exclusively for > > exynos dsi drivers and it's legacy bindings. > > > > B. Without componenet_ops for newly implemented bridges and its > > users like i.MX8MM. > > > > The future plan is to fix the implementation A) by dropping > > component_ops and fixing exynos specific code in order to make > > the bridge more mature to use and the same is mentioned in > > drivers TODO. > > > > Patch 0001 - 0006: Bridge conversion > > Patch 0007 - 0017: Samsung MIPI DSIM bridge fixes, additions > > > > Tested in Engicam i.Core MX8M Mini SoM. > > > > Anyone interest, please have a look on this repo > > https://github.com/openedev/linux/tree/070421-imx8mm-dsim > > > > Would appreciate anyone from the exynos team to test it on > > the exynos platform? > > > > Any inputs? > > I really like where you are headign with this! > No testing - sorry. But I will try to provide a bit of feedback on the > individual patches. > > I hope you find a way to move forward with this. Thanks for the response. We have found some issues with Bridge conversion on existing exynos drivers. The component based DSI drivers(like exynos) are difficult to attach if it involves kms hotplug. kms hotplug would require drm pointer and that pointer would only available after the bind call finishes. But the bridge attach in bind call will defer till it find the attached bridge. Right now I'm trying to find the proper way to attach the bridges for component based DSI drivers which involves kms hot-plug. If you have any ideas on this, please let me know. Thanks, Jagan.