From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 4BD7833EAFB; Mon, 18 Aug 2025 14:03:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755525797; cv=none; b=N3IaAj0rCnfZc/r/rtv3KzbF8GrmfjTHhqYXiwDHobu4qvsmnouZtK/3JMhjhDUIVrS4CSQBHhdmBzj3b+aM1rDCbBtjKt1BmmNgDiegKjU9aW7GlulKi0/gZYWgLmG9mT/Pa7s1XU2HSdAqtV6LLxCsWrzyy67odJb3mZB6ShM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755525797; c=relaxed/simple; bh=dV0+H/kyLZNQmpUd6XS2XjGD675gDe3vk77xwRie34U=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZEt+X46SX/qbaNL653rYOfQ9RDc/Dtq2MqZ2QHWFjSErUXqE73dmc95Ac2XB4eR3zCLvbdTNAZEnKxtSUiqyi+U1nikRXr8d6JiaJtKFCZR9QmfGM6pE1qjlM6usjHUrnw9cOtUeAnuNDEciGmiZdt+WEkhrDxCXlt7xW2tuyPA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=yrck1OwG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="yrck1OwG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5CE05C2BCC6; Mon, 18 Aug 2025 14:03:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1755525796; bh=dV0+H/kyLZNQmpUd6XS2XjGD675gDe3vk77xwRie34U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yrck1OwGlEwyL3tgybjV1KGCADIaJlvVFuaYFSaIJj//0og37a6Yk2HVjM1xSIqtp bH/coahYJ0fwvAwKGjXoCNY/HbGwNpB/tZa4KrK+F4q6elEnF8HU4i/wHLqEjpGXMI 6Swk+Jz4jb9wCF+cb9b0noADdeGntDUefovcE/Xk= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Fabrizio Castro , Lad Prabhakar , Biju Das , Laurent Pinchart , Sasha Levin Subject: [PATCH 6.16 342/570] drm: renesas: rz-du: mipi_dsi: Add min check for VCLK range Date: Mon, 18 Aug 2025 14:45:29 +0200 Message-ID: <20250818124519.035279239@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250818124505.781598737@linuxfoundation.org> References: <20250818124505.781598737@linuxfoundation.org> User-Agent: quilt/0.68 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 6.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lad Prabhakar [ Upstream commit e37a95d01d5acce211da8446fefbd8684c67f516 ] The VCLK range for Renesas RZ/G2L SoC is 5.803 MHz to 148.5 MHz. Add a minimum clock check in the mode_valid callback to ensure that the clock value does not fall below the valid range. Co-developed-by: Fabrizio Castro Signed-off-by: Fabrizio Castro Signed-off-by: Lad Prabhakar Reviewed-by: Biju Das Reviewed-by: Laurent Pinchart Signed-off-by: Biju Das Link: https://lore.kernel.org/r/20250609225630.502888-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c | 3 +++ 1 file changed, 3 insertions(+) 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 dc6ab012cdb6..6aca10920c8e 100644 --- a/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c +++ b/drivers/gpu/drm/renesas/rz-du/rzg2l_mipi_dsi.c @@ -585,6 +585,9 @@ rzg2l_mipi_dsi_bridge_mode_valid(struct drm_bridge *bridge, if (mode->clock > 148500) return MODE_CLOCK_HIGH; + if (mode->clock < 5803) + return MODE_CLOCK_LOW; + return MODE_OK; } -- 2.39.5