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[0/3] Raspberry Pi 4 HWRNG Support

Message ID 20191118075807.165126-1-stephen@brennan.io (mailing list archive)
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Series Raspberry Pi 4 HWRNG Support | expand

Message

Stephen Brennan Nov. 18, 2019, 7:58 a.m. UTC 
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(-)