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Mon, 28 Sep 2026 10:39:51 +0200 Message-ID: Date: Mon, 28 Sep 2026 10:39:50 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/4] media: ipu-bridge: Add the ST VD55G1 (TBE20A1) To: Ruslan Koreev , , , CC: , , , , , , , , Peter Marshall References: <20260924171820.1179823-1-koreev.r@gmail.com> <20260924171820.1179823-3-koreev.r@gmail.com> Content-Language: en-GB From: Benjamin Mugnier In-Reply-To: <20260924171820.1179823-3-koreev.r@gmail.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-ClientProxiedBy: ENXCAS1NODE2.st.com (10.75.128.138) To STKDAG1NODE2.st.com (10.75.128.133) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB1PEPF000509E3:EE_|PAXPR10MB5407:EE_ X-MS-Office365-Filtering-Correlation-Id: a619d942-ee2f-4c50-b0e2-08df1d3c1136 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|376014|23010399003|7416014|82310400026|36860700016|1800799024|4143699003|10067099003|56012099006|11063799006|18002099003|22082099003; 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X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 5SKYVeFhCGA1ahCGbaA2liJjzgdBXoLwWfW0a2tPCb33NyqcyTT2pluDmXnrpS2IqKKs/6LPkaooutEC22eapzXkYmeTTf2NiYfEX8Ka6+pgQX4PqydKyY88IE3/QaJF7wvyzCQCoU7FIibXiZarY7UrWLFQ4h5ROHlGnvKOwp53o3wHI775Y/CNx0pdvV1ZJzhTnk92zz1VuH+9bXr3fuMbM2AtRgKgDSwd4p+QdyhUuLmjzkayAxlAYfTF4ipCwXA3lQoag4HFmImp08EaJ2eVcUH+X3S4wKhURGimOxZrrb1QNHbA/so2NPRFiM/0xlshO7GKCUGMb3hyCQS14ltd9TPnK44zEmIE2PNhT4skaZhQgD84gAF9hI7LTY4k5hnVr8zloYf49CxB9CdDfizdIIm+yZy2cBjsfePxSAtcPygEFJDooWOclyJ/Humd X-OriginatorOrg: foss.st.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Sep 2026 08:39:53.2785 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: a619d942-ee2f-4c50-b0e2-08df1d3c1136 X-MS-Exchange-CrossTenant-Id: 75e027c9-20d5-47d5-b82f-77d7cd041e8f X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=75e027c9-20d5-47d5-b82f-77d7cd041e8f;Ip=[164.130.1.60];Helo=[smtpO365.st.com] X-MS-Exchange-CrossTenant-AuthSource: DB1PEPF000509E3.eurprd03.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: PAXPR10MB5407 Hi Ruslan, Le 24/09/2026 à 19:18, Ruslan Koreev a écrit : > Add the ACPI HID Lenovo uses for the ST VD55G1 IR camera of the ThinkPad > X1 Carbon Gen 14. The firmware describes one CSI-2 data lane and, as > usual, no link frequency, so the value has to come from this table; the > vd55g1 driver requires exactly one. > > Use 402 MHz (804 Mbps). The sensor derives its MIPI rate and clock tree > from this value and the IPU7 CSI-2 receiver reads the same value back > through V4L2_CID_LINK_FREQ, so both ends agree by construction. At > 804 Mbps a full-width 10-bit line takes about 11 us on the link, which > allows well over 100 fps at full resolution; lower rates lengthen every > line proportionally. The rate is in the lower half of the 250 to > 1200 Mbps range the sensor supports and is the one validated on the > hardware, where 804x704 streams at 58 fps. > > Signed-off-by: Ruslan Koreev Acked-by: Benjamin Mugnier > --- > drivers/media/pci/intel/ipu-bridge.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/media/pci/intel/ipu-bridge.c b/drivers/media/pci/intel/ipu-bridge.c > index bd64c0400..5941428ed 100644 > --- a/drivers/media/pci/intel/ipu-bridge.c > +++ b/drivers/media/pci/intel/ipu-bridge.c > @@ -101,6 +101,8 @@ static const struct ipu_sensor_config ipu_supported_sensors[] = { > IPU_SENSOR_CONFIG("SONY471A", 1, 200000000), > /* Sony IMX471 (found on Lenovo X1 Carbon G14) */ > IPU_SENSOR_CONFIG("TBE20A0", 1, 200000000), > + /* STMicroelectronics VD55G1 (found on Lenovo X1 Carbon G14) */ > + IPU_SENSOR_CONFIG("TBE20A1", 1, 402000000), > /* Toshiba T4KA3 */ > IPU_SENSOR_CONFIG("XMCC0003", 1, 321468000), > }; -- Regards, Benjamin