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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id E9C04C4453F for ; Wed, 22 Jul 2026 18:59:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Cc:To: Content-Transfer-Encoding:Content-Type:MIME-Version:Message-Id:Date:Subject: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=yFCG9WjoWxwgglQeZmRGJpQkPU6dVeqvJYQB5/riEUs=; b=cTQ1lPlUiUEbG+ FjlH2TDvRc6Xr8GuKnUfWoeaEEQZtLajrcmt1ItWVzMJn5WwqRXtBu1dHpqN6X/NmPTVI05SCzKlr 94RgF5QxMFvIjjmwYApGsxnDXSc+J7zDrPTBBJaeWhn+T7aaEYD4hXihDl5/z+cSDvg3Spem0+jxa ma3juVGY/uAFIhpkz9eUVoRtTdgudg+x35+AbZPxY0DYlmID3G5UmqeZRKy9McT2lwtmTTWI6/K+u ccv02jqSUxE78CQjbci6Nx3phwLK8k+fG4/XJFyh74eeF5qsCBwaKRNK3YUF2v8z4IeRlRNcCh0Am 5XySSwLC8qN6yYS1zqzw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wmc9j-0000000CadX-0wEc; Wed, 22 Jul 2026 18:58:59 +0000 Received: from layka.disroot.org ([178.21.23.139]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wmc9f-0000000Cad4-2bzB for linux-arm-kernel@lists.infradead.org; Wed, 22 Jul 2026 18:58:57 +0000 Received: from mail01.layka.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id DFA968695D; Wed, 22 Jul 2026 20:58:49 +0200 (CEST) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id IUKNuNWloxYK; Wed, 22 Jul 2026 20:58:49 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1784746728; bh=UfNqCcOeyh0EPGI9MOJP83FkVghh8sF7H6l5q4tKtFw=; h=From:Subject:Date:To:Cc; b=Sl5QumeunLrtHofgHBv/aoy+6EFb24yP8dg6quDUUgchsjYWKpeYaCungl1G6IBAq GFlQf0MqXMbyf8Ffr/Y5aJK1ajQUTTQO3h+iYeUlCU0X2vi+WzVw2LUKHoHmC6OHda z33fktrGK+kBICDDndSezEYgKSN1XDo735BqLpqPsGUCtOa521Fs5emCQpv9WCuMdO LGFIsqssOdxQ7GkcqQCYhyLG9z78Xf7GBwgMResozBPmpC6YkpgITg1yqAKiT35i0n a81oPqXmFjoowiqRPSM+/OaU83eEqwjrYYfUwhlmk1dIqa2P5RONUUi40iBC1zH11A Zcq+/Eg27ytIA== From: Kaustabh Chakraborty Subject: [PATCH v3 0/3] Fixes and enhancements for Exynos (7870) DSIM bridge driver Date: Thu, 23 Jul 2026 00:28:31 +0530 Message-Id: <20260723-exynos-dsim-fixes-v3-0-0c31ae1dbecc@disroot.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/33NTQrCMBAF4KuUrI0kk/4EV95DXAQzbWdhI5kSW krubtqNCOLyveF9swnGSMjiUm0iYiKmMJVgTpV4jG4aUJIvWYCCVmmoJS7rFFh6pqfsaUGWjbH Gt67tVWdE2b0iHocyu91LHonnENfjRdJ7+09LWiqpAbyqOwfG66snjiHM5xAHsXsJPgYo+8uAY jjbdGi1UQ7ct5FzfgPd/eoP+AAAAA== X-Change-ID: 20260124-exynos-dsim-fixes-5383d6a6f073 To: Inki Dae , Jagan Teki , Marek Szyprowski , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Peter Griffin , Alim Akhtar Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org, Kaustabh Chakraborty , stable@vger.kernel.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260722_115855_807654_D0782F9C X-CRM114-Status: GOOD ( 10.37 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Since v6.17, there is a regression for the Exynos 7870 DSIM driver. The display occasionally had random aberration when the panel was turned on. The first patch addresses that. The second patch replaces an implicit loop for waiting for PLL stabilization with an interrupt-based solution, which should be more reliable. This solution was suggested by Inki Dae in a discussion of an earlier patch series sent by me. For further details, refer to its commit description. Signed-off-by: Kaustabh Chakraborty --- Changes in v3: - Add patch for removing conflicting devices for DRM (Sam Day) - Link to v2: https://lore.kernel.org/r/20260208-exynos-dsim-fixes-v2-0-a857e8130a2a@disroot.org Changes in v2: - drop now-not-required [v1 1/3] (Marek Szyprowski) - Link to v1: https://lore.kernel.org/r/20260124-exynos-dsim-fixes-v1-0-122d047a23d1@disroot.org --- Kaustabh Chakraborty (3): drm/bridge: samsung-dsim: enable MFLUSH_VS for Exynos 7870 DSIM drm/bridge: samsung-dsim: use DSIM interrupt to wait for PLL stability drm/exynos: remove simplefb nodes before init drivers/gpu/drm/bridge/samsung-dsim.c | 48 +++++++++++++++++++++++---------- drivers/gpu/drm/exynos/exynos_drm_drv.c | 6 +++++ include/drm/bridge/samsung-dsim.h | 1 + 3 files changed, 41 insertions(+), 14 deletions(-) --- base-commit: 290aaf24a551d5a0dce037e3fab30820f9113a10 change-id: 20260124-exynos-dsim-fixes-5383d6a6f073 Best regards, -- Kaustabh Chakraborty