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[184.144.58.243]) by smtp.gmail.com with ESMTPSA id af79cd13be357-8cff3119121sm140450585a.16.2026.03.23.19.01.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Mar 2026 19:01:38 -0700 (PDT) From: Richard Acayan To: Mauro Carvalho Chehab , Rob Herring , Krzysztof Kozlowski , Conor Dooley , "Bryan O'Donoghue" , Robert Foss , Todor Tomov , Vladimir Zapolskiy , Bjorn Andersson , Konrad Dybcio , Tianshu Qiu , Sakari Ailus , linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-msm@vger.kernel.org Cc: Robert Mader , David Heidelberg , phone-devel@vger.kernel.org, Richard Acayan Subject: [PATCH v11 4/7] media: i2c: imx355: Restrict data lanes to 4 Date: Mon, 23 Mar 2026 22:01:29 -0400 Message-ID: <20260324020132.8683-5-mailingradian@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260324020132.8683-1-mailingradian@gmail.com> References: <20260324020132.8683-1-mailingradian@gmail.com> Precedence: bulk X-Mailing-List: linux-media@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The IMX355 sensor driver currently supports having 4 data lanes. There can't be more or less, so check if the firmware specifies 4 lanes. Suggested-by: Sakari Ailus Link: https://lore.kernel.org/r/aW3uFcT1zmiF4GUP@kekkonen.localdomain Signed-off-by: Richard Acayan --- drivers/media/i2c/imx355.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/media/i2c/imx355.c b/drivers/media/i2c/imx355.c index 9ca87488c933..27a5c212a527 100644 --- a/drivers/media/i2c/imx355.c +++ b/drivers/media/i2c/imx355.c @@ -66,6 +66,9 @@ #define IMX355_EXT_CLK 19200000 #define IMX355_LINK_FREQ_INDEX 0 +/* number of data lanes */ +#define IMX355_DATA_LANES 4 + struct imx355_reg { u16 address; u8 val; @@ -1705,6 +1708,9 @@ static struct imx355_hwcfg *imx355_get_hwcfg(struct device *dev) if (!cfg) goto out_err; + if (bus_cfg.bus.mipi_csi2.num_data_lanes != IMX355_DATA_LANES) + goto out_err; + ret = v4l2_link_freq_to_bitmap(dev, bus_cfg.link_frequencies, bus_cfg.nr_of_link_frequencies, link_freq_menu_items, -- 2.53.0