devm_v4l2_sensor_clk_get(9)

💅 devm_v4l2_sensor_clk_get(9) 💅

okay so bestie, welcome to the Kernel API Manual — this one's devm_v4l2_sensor_clk_get(9), and it's literally the glow-up era of clock-getting for camera sensors ✨

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🌸 NAME 🌸

devm_v4l2_sensor_clk_get — lookup and obtain a reference to a clock producer for a camera sensor 🎀 no cap, that's the whole vibe

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✨ SYNOPSIS ✨

struct clk * devm_v4l2_sensor_clk_get (struct device *dev , const char
*id );

like, yes, it wraps a little in the manual, but that's the signature, copy it exactly bestie 🫶

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🦋 ARGUMENTS 🦋

• dev — the device for the v4l2 sensor clock "consumer" (yes, "consumer" in quotes, that's literally how the manpage says it 💅)
• id — the clock consumer ID

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🔥 DESCRIPTION 🔥

So this function behaves the same way as devm_clk_get, except where there is no clock producer — like on ACPI-based platforms. That's the whole twist 👑

For ACPI-based platforms, the function will read the "clock-frequency" ACPI _DSD property and register a fixed-clock with the frequency indicated in the property. iconic behaviour honestly ⭐

This function also handles the special ACPI-based system case where:

• The clock-frequency _DSD property is present.
• A reference to the clock producer is present, where the clock is provided by a camera sensor PMIC driver (e.g. int3472/tps68470.c)

In this case try to set the clock-frequency value to the provided clock. mmhmm, that's the move 🧚

As the name indicates, this function may only be used on camera sensor devices. Main character energy, but like, restricted main character energy 🙈 This is because generally only camera sensors do need a clock to query the frequency from, due to the requirement to configure the PLL for a given CSI-2 interface frequency where the sensor's external clock frequency is a factor. Additionally, the clock frequency tends to be available on ACPI firmware based systems for camera sensors specifically (if e.g. DisCo for Imaging compliant). iykyk 💜

Returns a pointer to a struct clk on success or an error pointer on failure. so like, check the return value, bestie, fr fr 😭

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🎀 SEE ALSO 🎀

Kernel file ./include/media/v4l2-common.h

• v4l2_ctrl_query_fill(9)
• enum v4l2_i2c_tuner_type(9)
• v4l2_i2c_new_subdev(9)
• v4l2_i2c_new_subdev_board(9)
• v4l2_i2c_subdev_set_name(9)
• v4l2_i2c_subdev_init(9)
• v4l2_i2c_subdev_addr(9)
• v4l2_i2c_tuner_addrs(9)
• v4l2_i2c_subdev_unregister(9)
• v4l2_spi_new_subdev(9)
• v4l2_spi_subdev_init(9)
• v4l2_spi_subdev_unregister(9)
• v4l_bound_align_image(9)
• v4l2_find_nearest_size_conditional(9)
• v4l2_find_nearest_size(9)
• v4l2_g_parm_cap(9)
• v4l2_s_parm_cap(9)
• enum v4l2_pixel_encoding(9)
• struct v4l2_format_info(9)
• v4l2_get_link_freq(9)
• v4l2_get_active_data_lanes(9)
• v4l2_link_freq_to_bitmap(9)
• devm_v4l2_sensor_clk_get_legacy(9)

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okay that's the whole page, go read the source in <pink>./include/media</pink> whenever you want, and this one's dated October 2026 — devm_v4l2_sensor_clk_get(9) girlie signing off, slay 💅💖🌈