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From:   Stephen Brennan <stephen@brennan.io>
To:     stephen@brennan.io
Cc:     Matt Mackall <mpm@selenic.com>,
        Herbert Xu <herbert@gondor.apana.org.au>,
        Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Ray Jui <rjui@broadcom.com>,
        Scott Branden <sbranden@broadcom.com>,
        bcm-kernel-feedback-list@broadcom.com,
        Eric Anholt <eric@anholt.net>,
        Stefan Wahren <wahrenst@gmx.net>,
        Arnd Bergmann <arnd@arndb.de>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Florian Fainelli <f.fainelli@gmail.com>,
        linux-crypto@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-rpi-kernel@lists.infradead.org
Message-ID: <20191119061407.69911-1-stephen@brennan.io>
Subject: [PATCH v2 0/3] Raspberry Pi 4 HWRNG Support
Date:   Mon, 18 Nov 2019 22:14:04 -0800
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Sender: linux-crypto-owner@vger.kernel.org
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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 series, the same command gives two random bytes.

Changes in v2:
- specify the correct size for the region in the dts, refactor bcm283x rng

---

Stefan Wahren (2):
  dt-bindings: rng: add BCM2711 RNG compatible
  hwrng: iproc-rng200: Add support for BCM2711

Stephen Brennan (1):
  ARM: dts: bcm2711: Enable HWRNG support

 .../devicetree/bindings/rng/brcm,iproc-rng200.txt     |  1 +
 arch/arm/boot/dts/bcm2711.dtsi                        |  6 +++---
 arch/arm/boot/dts/bcm2835.dtsi                        |  1 +
 arch/arm/boot/dts/bcm2836.dtsi                        |  1 +
 arch/arm/boot/dts/bcm2837.dtsi                        |  1 +
 arch/arm/boot/dts/bcm283x-common.dtsi                 | 11 +++++++++++
 arch/arm/boot/dts/bcm283x.dtsi                        |  6 ------
 drivers/char/hw_random/Kconfig                        |  2 +-
 drivers/char/hw_random/iproc-rng200.c                 |  1 +
 9 files changed, 20 insertions(+), 10 deletions(-)
 create mode 100644 arch/arm/boot/dts/bcm283x-common.dtsi

--=20
2.24.0