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 04426770FE; Tue, 26 Aug 2025 12:57:39 +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=1756213059; cv=none; b=WWDrRlGKdWcJmUbtXUmPhSZeo1gdA6dv5VxUtpmFbu0vqfnB4YZHmA1AVwwM9TfaVYAfDnmEwzmb7KqtpiTifB/9g5cvNhYq3duU3lA8LL67L19uly5KIulhSPZmno1zegZq6HzvZLHHGVskzDZFjkbLkZ7xCHMBUdiYvqVmeVI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756213059; c=relaxed/simple; bh=3MZhzA+WnUAYAkVjj5Ye0FUc7Hg5l5qhBixpAHiAH5s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=g7B4dimBcz19W0+AAv6ccRWa9C6hyRRdCoiNMnWXz3EIfIfPlnXsqyzls7yE84/Ud42OUXGFOi9vovyVFEhFCSFf+otVIl8LTV6Mv2b/PeP6E8MyHKXxivbuLU4Us+uyg+XggTaNAns5PnP5MXzIsoTJFbzSKIXGIdD+pGPue+I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=CKbWY3Bh; 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="CKbWY3Bh" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8AAB7C4CEF1; Tue, 26 Aug 2025 12:57:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756213058; bh=3MZhzA+WnUAYAkVjj5Ye0FUc7Hg5l5qhBixpAHiAH5s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=CKbWY3Bh54yl+BQ6SaA69ArjXKcSH08yloUACv0rNLCRCLq+19xETYIEXnH98xGEw cmgEJgMGvueQStjUgsl6niMmR4oR3FIGVHgLAZ7nvRrrsJH445VDwt4mhjky3CYTKk tR1nhmsABEaiaj7FkcQX0cUNovnidXMrYInzZ7hU= 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 6.6 206/587] drm: renesas: rz-du: mipi_dsi: Add min check for VCLK range Date: Tue, 26 Aug 2025 13:05:55 +0200 Message-ID: <20250826110958.178429212@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110952.942403671@linuxfoundation.org> References: <20250826110952.942403671@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 6.6-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/rcar-du/rzg2l_mipi_dsi.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi.c b/drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi.c index 10febea473cd..6cec796dd463 100644 --- a/drivers/gpu/drm/renesas/rcar-du/rzg2l_mipi_dsi.c +++ b/drivers/gpu/drm/renesas/rcar-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