This patch series enables support for the HWRNG included on the Raspberry Pi 4. It is simply a rebase of Stefan's branch [1]. I went ahead and tested this out on a Pi 4. Prior to this patch series, attempting to use the hwrng gives: $ head -c 2 /dev/hwrng head: /dev/hwrng: Input/output error After this patch, the same command gives two random bytes. [1]: https://github.com/lategoodbye/rpi-zero/tree/bcm2711-hwrng --- Stefan Wahren (3): dt-bindings: rng: add BCM2711 RNG compatible hwrng: iproc-rng200: Add support for BCM2711 ARM: dts: bcm2711: Enable HWRNG support Documentation/devicetree/bindings/rng/brcm,iproc-rng200.txt | 1 + arch/arm/boot/dts/bcm2711.dtsi | 5 ++--- drivers/char/hw_random/Kconfig | 2 +- drivers/char/hw_random/iproc-rng200.c | 1 + 4 files changed, 5 insertions(+), 4 deletions(-) -- 2.24.0