Re: [PATCH v4 0/5] hwrng: add support for i.MX6 rngb

Herbert Xu
2020-07-23T07:58:53Z

On Wed, Jul 15, 2020 at 06:25:59PM +0300, Horia Geantă wrote:
> Add support for RNGB found in some i.MX6 SoCs (6SL, 6SLL, 6ULL, 6ULZ),
> based on RNGC driver (drivers/char/hw_random/imx-rngc.c).
>
> This driver claims support also for RNGB (besides RNGC),
> and is currently used only by i.MX25.
>
> Note:
>
> Several NXP SoC from QorIQ family (P1010, P1023, P4080, P3041, P5020)
> also have a RNGB, however it's part of the CAAM
> (Cryptograhic Accelerator and Assurance Module) crypto accelerator.
> In this case, RNGB is managed in the caam driver
> (drivers/crypto/caam/), since it's tightly related to
> the caam "job ring" interface, not to mention CAAM internally relying on
> RNGB as source of randomness.
>
> On the other hand, the i.MX6 SoCs with RNGB have a DCP
> (Data Co-Processor) crypto accelerator and this block and RNGB
> are independent.
>
> Changelog:
> v4
> -remove unneeded compatible strings from the driver
> v3
> -mention in the DT binding the compatibility with "fsl,imx25-rngb"
> -collected Reviewed-by
> v2
> -update rngb DT binding with compatible strings for i.MX6 SoCs
>
> Horia Geantă (5):
> dt-bindings: rng: add RNGB compatibles for i.MX6 SoCs
> ARM: dts: imx6sl: fix rng node
> ARM: dts: imx6sll: add rng
> ARM: dts: imx6ull: add rng
> hwrng: imx-rngc: enable driver for i.MX6
>
> Documentation/devicetree/bindings/rng/imx-rng.txt | 3 +++
> arch/arm/boot/dts/imx6sl.dtsi | 2 ++
> arch/arm/boot/dts/imx6sll.dtsi | 7 +++++++
> arch/arm/boot/dts/imx6ull.dtsi | 7 +++++++
> drivers/char/hw_random/Kconfig | 2 +-
> 5 files changed, 20 insertions(+), 1 deletion(-)

Patches 1 and 5 applied. Thanks.
--
Email: Herbert Xu <herbert@gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
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