From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7A34432B116; Thu, 30 Jul 2026 15:12:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785424351; cv=none; b=HI9m66uEE5U1x3ZCrHnoJo4bwtrXfIjQ3A63xKBIumetf6u6esXMSQdDGs/Bjo6vOWtAW2pEnOprWshHThHXAIhuAjieuh6joUu1DXg0thyLkRyl9fnIviHAbsAudAvsVA6b1PMUSxA6X9WaHhj8Sym0jGyHic3xAQZjhETGB4g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785424351; c=relaxed/simple; bh=HADG+iT/e5ugPsuKEi09UfnE+0P8LY3hjQjZjuMx2Ag=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=L0fXXlPB0H0Qp7O7FJpOt0U286lWdsmna3IMflbvGlywsBrKPRbgYsBQGQ9BmsldU3NPwDr5xrZZzOA94uykItCC6JZ8Xb2oiQhXOnkbepirdpOMuHZCDI3LuXazdYhFkkzvGT61n/kbmv5Ypic0wG2CQVzJLdznFScLxj4lDyA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=bZGwYr4v; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="bZGwYr4v" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D524D1F000E9; Thu, 30 Jul 2026 15:12:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1785424350; bh=eHyCb+D2Pw9jErGFe9J9gb8/SlSd1bbHpi0/iLGqKMg=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=bZGwYr4vMngzrlEw3Di3MxEAWkaXWyylnGMxL13FnJhhzMQfv3n8iHk0gI60KA2s7 GZQD8Djt0l8WVNalS0soUTLgxacVS9w1OdK0XTwxPDRyBB9ijLmpoqBjrcdGodcRb7 3/POz8Bd5YNShXwQR1Z1uTTTUbYxWFsXlWzF5o34= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Tommaso Merciai , Biju Das Subject: [PATCH 6.18 318/675] drm: renesas: rzg2l_mipi_dsi: Increase reset deassertion delay Date: Thu, 30 Jul 2026 16:10:48 +0200 Message-ID: <20260730141451.886068547@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260730141445.110192266@linuxfoundation.org> References: <20260730141445.110192266@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Biju Das commit 7cbba8a8ba0219a267844d3116dbc77cecb4fcf8 upstream. The RZ/G2L hardware manual (Rev. 1.50, May 2025), Section 34.4.2.1, requires waiting at least 1 msec after deasserting the CMN_RSTB signal before the DSI-Tx module is ready. Increase the delay from 1 usec to 1 msec by replacing udelay(1) with fsleep(1000) for RZ/G2L SoCs. Fixes: 7a043f978ed1 ("drm: rcar-du: Add RZ/G2L DSI driver") Cc: stable@vger.kernel.org Reviewed-by: Tommaso Merciai Tested-by: Tommaso Merciai Link: https://patch.msgid.link/20260330104450.128512-3-biju.das.jz@bp.renesas.com Signed-off-by: Biju Das Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c @@ -272,7 +272,7 @@ static int rzg2l_mipi_dsi_dphy_init(stru if (ret < 0) return ret; - udelay(1); + fsleep(1000); return 0; }