New gpclk overlays for Raspberry Pis

· Adafruit Industries Blog · Sept. 7, 2026, 3:21 p.m.
Clocks Raspberry Pi Raspberry Pi 3 Raspberry Pi 4 Raspberry Pi Hardware Programming GPIO GPCLK
Summary
Raspberry Pi introduces new device tree overlays allowing GPCLK to generate a clock signal on a GPIO pin, which can replace a crystal in projects. This feature was previously achieved via a custom dt-blob.bin, now unsupported.
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