media: intel/ipu-bridge: fix OVTID858 link frequencies

[zR-JB]

Summary

Fix the OVTID858 / OV13858 entry in ipu-bridge to publish the two link frequencies supported by the OV13858 driver.

The existing entry is:

/* Omnivision OV13858 - Surface Pro 9 */
IPU_SENSOR_CONFIG("OVTID858", 4, 540000000),

The second argument to IPU_SENSOR_CONFIG() is nr_link_freqs, not the CSI lane count. The bridge obtains the actual lane count separately from firmware SSDB.

The OV13858 driver itself exposes exactly two link frequencies, 540 MHz and 270 MHz, in its LINK_FREQ control menu, and uses those two entries across its supported modes

kernel/drivers/media/i2c/ov13858.c

Lines 992 to 1038 in 7d3b315

	/* Mode configs */
	static const struct ov13858_mode supported_modes[] = {
	{
	.width = 4224,
	.height = 3136,
	.vts_def = OV13858_VTS_30FPS,
	.vts_min = OV13858_VTS_30FPS,
	.reg_list = {
	.num_of_regs = ARRAY_SIZE(mode_4224x3136_regs),
	.regs = mode_4224x3136_regs,
	},
	.link_freq_index = OV13858_LINK_FREQ_INDEX_0,
	},
	{
	.width = 2112,
	.height = 1568,
	.vts_def = OV13858_VTS_30FPS,
	.vts_min = 1608,
	.reg_list = {
	.num_of_regs = ARRAY_SIZE(mode_2112x1568_regs),
	.regs = mode_2112x1568_regs,
	},
	.link_freq_index = OV13858_LINK_FREQ_INDEX_1,
	},
	{
	.width = 2112,
	.height = 1188,
	.vts_def = OV13858_VTS_30FPS,
	.vts_min = 1608,
	.reg_list = {
	.num_of_regs = ARRAY_SIZE(mode_2112x1188_regs),
	.regs = mode_2112x1188_regs,
	},
	.link_freq_index = OV13858_LINK_FREQ_INDEX_1,
	},
	{
	.width = 1056,
	.height = 784,
	.vts_def = OV13858_VTS_30FPS,
	.vts_min = 804,
	.reg_list = {
	.num_of_regs = ARRAY_SIZE(mode_1056x784_regs),
	.regs = mode_1056x784_regs,
	},
	.link_freq_index = OV13858_LINK_FREQ_INDEX_1,
	}
	};

Reflect that in the bridge configuration:

/* Omnivision OV13858 */
IPU_SENSOR_CONFIG("OVTID858", 2, 540000000, 270000000),

The entry was originally annotated for Surface Pro 9, but OVTID858 is also used by later Surface Pro generations, so make the comment device-independent.

Testing

The 540/270 MHz configuration was independently used successfully while enabling the OV13858 rear camera on Surface Pro 12 Intel.

The existing linux-surface OV13858 support was also separately confirmed to probe and stream the same camera on Surface Pro 12 Intel.

Related Surface Pro 12 enablement tracking: linux-surface/linux-surface#2144.

Related Surface Pro 12 camera work

• Rear OV13858 mounting rotation: media: intel/ipu-bridge: fix rear camera rotation on Surface Pro 12 (Intel) #175
• Front IMX681 / SONY0681 support RFC: RFC: media: add IMX681/SONY0681 support tested on Surface Pro 12 (Intel) #176