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media: i2c: imx355: Restrict data lanes to 4

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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 <sakari.ailus@linux.intel.com>
Link: https://lore.kernel.org/r/aW3uFcT1zmiF4GUP@kekkonen.localdomain
Signed-off-by: Richard Acayan <mailingradian@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>
This commit is contained in:
Richard Acayan 2026-03-10 22:03:28 -04:00 committed by Hans Verkuil
parent 08f9794d9b
commit d3ac6212df
1 changed files with 6 additions and 0 deletions
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6
drivers/media/i2c/imx355.c
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@ -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,