Hi Herbert, On 11/19/2019 7:16 PM, Stephen Brennan wrote: > 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. When we get a review from Rob, you can take patches 1-2 through your tree and Stefan/Nicholas can queue patches 3-4 through the BCM2835 tree where the DTS files already exist. Does that work for you? > > Changes in v3: > - drop interrupts from bcm2711 rng node > - move bcm283x rng into bcm2835-common.dtsi > - add reviewed-by tag > - separated out patch 3 into two parts > > 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 (2): > ARM: dts: bcm2835: Move rng definition to common location > ARM: dts: bcm2711: Enable HWRNG support > > .../devicetree/bindings/rng/brcm,iproc-rng200.txt | 1 + > arch/arm/boot/dts/bcm2711.dtsi | 7 +++---- > arch/arm/boot/dts/bcm2835-common.dtsi | 6 ++++++ > arch/arm/boot/dts/bcm283x.dtsi | 6 ------ > drivers/char/hw_random/Kconfig | 2 +- > drivers/char/hw_random/iproc-rng200.c | 1 + > 6 files changed, 12 insertions(+), 11 deletions(-) > -- Florian
