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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id C3E8B1090256 for ; Thu, 19 Mar 2026 16:48:44 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 02B5C10E517; Thu, 19 Mar 2026 16:48:43 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Yidyz1+0"; dkim-atps=neutral Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) by gabe.freedesktop.org (Postfix) with ESMTPS id C18F410E516 for ; Thu, 19 Mar 2026 16:48:38 +0000 (UTC) Received: by mail-wm1-f44.google.com with SMTP id 5b1f17b1804b1-48541edecf9so12766625e9.1 for ; Thu, 19 Mar 2026 09:48:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1773938917; x=1774543717; darn=lists.freedesktop.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Bng5/yZC9lrbuKxC9dU3uqE7D/V7iSIEJ7NDOj06TGk=; b=Yidyz1+0xvScc7/kBTy8z5XTBotG+1n9Cs0flaRfqgCl9FDXZm6pIt81xj5JViLpnq 6MyKkMwXE8SiM54CZiT9Kv9wTeHGbgAFQN01+V2giP0IKF2wFRg+MV59W0luj699Q3bO dV0Wa2I7uQ5YrdqPwcXZYgi8gU2zr5Uy2CW+BVgNd+Al8iRSBBiQKuKUqPV36o67QW4r 7Bodw6QWCI94qql3wNQ7Kkass7DQwo1tfloPBZnKHjObJjcuiL7cIv5s56EwkkaHX6Zl kuVrOh06w18NT/2InNlKvudS/8PzlTcZRZjAEeEFKgoTfhd6GL5URJ7L25RkBBgLQV6v 6qmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1773938917; x=1774543717; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=Bng5/yZC9lrbuKxC9dU3uqE7D/V7iSIEJ7NDOj06TGk=; b=ktNJOA6rqIfBqooaxYMoF2wsxWmBNRWgNSJAVlFQnekZtmSYRmbn7/8DoIKHH2Ry9M fUyPNuk/l86klII2twXEmBE3UkQDwWILn4xmHxik7qyQgC7rear64QqMwg3gjltGcXYj e5olLzl/HRrNRF2VB0VZjqD5FM764SUABdyOreSqkBi4wDAl9UgFfC4h5F4FbG1TDn1W 7ebupdEsH/h8AR7VuH1blpP6VXa5h6on7N/QiN9ZoSwzAThTkvmxBjGTJqXREsdRpCS4 Q6EbITjgMHFbFKZ8CM8VmCleOHS49NOmgxIiJRmksbD1114Q3I2eFE8gPXjGBLoqyhFO XPxw== X-Forwarded-Encrypted: i=1; AJvYcCVvEpriPd4NcOqOvt+5SfoUmpdQ/wfP0KXTDpydzIopqEjdHYqazwibS1FTPZzvTt/aEeL6bGvFS5k=@lists.freedesktop.org X-Gm-Message-State: AOJu0YySPGhwaQm19xjEto5l/qKZHJfgZp4P/+3Fig/cY8Yxv4BfpUdA n7nRuTHKc6w4vaeKHWjqmN+FiV6dn2vflnNXrWIw4U9QLwNh1vRNhMZ1 X-Gm-Gg: ATEYQzxEeEPTK4dbURvGa/D+bkawSUADuUjo5hygeujHeq+4aViIDiSACrksHqN0Va+ rzrdI1TwxINL+pQKvKN2FFQ15sl/PVOfx4zp4JWVumVHg9NKiiSxQPgGwwrTyq19kHPldSLsMXx fsAG/Ildw1LKRYR6twJiTKKEaUOSvhYhx3O5Q2LCGArBhSrd5hFG/UYU32ykP/iS5YOXNKvz5oq wR/uTcBsfiUKon6+p07wOqUZqnJCijTzpdn4WvWtNEBb0PM6ZnltGKNBRP51+n2R72jbz5JL7/t eXvw1362q+hbKQU/Ci0F6jnaNCSUeDQEM0POZSJGPtSLXjyoqQuy0eJwdkIBhIdxRtlwNjtKoqL s28yOPaBYuaL33NFXNFkZUXsQcXBJuHPH/9j86GingMpI5h+jIv+ta0GrZMBCOaYnYBxvYdMtlO 8NU89r9VhG3u1Giusp2O1Zqg5/DZGI+20= X-Received: by 2002:a05:600c:c490:b0:485:379b:57bb with SMTP id 5b1f17b1804b1-486f441bc19mr132327915e9.3.1773938916947; Thu, 19 Mar 2026 09:48:36 -0700 (PDT) Received: from biju.lan ([2a00:23c4:a758:8a01:8326:7b31:bf82:d2d0]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-486fe68ec05sm5238505e9.0.2026.03.19.09.48.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 Mar 2026 09:48:36 -0700 (PDT) From: Biju X-Google-Original-From: Biju To: Biju Das , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Cc: Chris Brandt , Hugo Villeneuve , Laurent Pinchart , Sam Ravnborg , dri-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven , Prabhakar Mahadev Lad , Biju Das , stable@vger.kernel.org Subject: [PATCH v2 2/4] drm: renesas: rzg2l_mipi_dsi: Fix assert of CMN_RSTB signal Date: Thu, 19 Mar 2026 16:48:26 +0000 Message-ID: <20260319164833.409126-3-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260319164833.409126-1-biju.das.jz@bp.renesas.com> References: <20260319164833.409126-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" From: Biju Das The CMN_RSTB reset signal is not required for reading PHY registers in the probe. Move reset_control_assert() from rzg2l_mipi_dsi_dphy_exit() to rzg2l_mipi_dsi_stop(), placing it before the dphy_exit() call. Since this reset signal is optional for RZ/V2H, the call is a no-op on that SoC. Fixes: 2991c3f0ca86 ("drm: renesas: rz-du: mipi_dsi: Add OF data support") Fixes: 418bb3a69e13 ("drm: rcar-du: rzg2l_mipi_dsi: Enhance device lanes check") Cc: stable@vger.kernel.org Signed-off-by: Biju Das --- v2: * New patch --- drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c index ff95cb9a7de5..d2da247abf05 100644 --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c @@ -541,8 +541,6 @@ static void rzg2l_mipi_dsi_dphy_exit(struct rzg2l_mipi_dsi *dsi) dphyctrl0 &= ~(DSIDPHYCTRL0_EN_LDO1200 | DSIDPHYCTRL0_EN_BGR); rzg2l_mipi_dsi_phy_write(dsi, DSIDPHYCTRL0, dphyctrl0); - - reset_control_assert(dsi->rstc); } static int rzg2l_dphy_conf_clks(struct rzg2l_mipi_dsi *dsi, unsigned long mode_freq, @@ -822,6 +820,7 @@ static int rzg2l_mipi_dsi_startup(struct rzg2l_mipi_dsi *dsi, static void rzg2l_mipi_dsi_stop(struct rzg2l_mipi_dsi *dsi) { + reset_control_assert(dsi->rstc); dsi->info->dphy_exit(dsi); pm_runtime_put(dsi->dev); } -- 2.43.0