[PATCH 1/5] arm: dts: rockchip: rk3399: add and enable rng node

[Peter Robinson]

On Tue, Mar 31, 2020 at 12:35 PM Lin Jinhan <troy.lin at rock-chips.com> wrote:
>
> Add rng node in rk3399-u-boot.dtsi and enable it in
> rk3399-evb-u-boot.dtsi.
>
> Signed-off-by: Lin Jinhan <troy.lin at rock-chips.com>
Tested-by: Peter Robinson <pbrobinson at gmail.com>

Tested with UEFI RNG providing a seed for KASLR.

> ---
>  arch/arm/dts/rk3399-evb-u-boot.dtsi | 5 +++++
>  arch/arm/dts/rk3399-u-boot.dtsi     | 6 ++++++
>  2 files changed, 11 insertions(+)
>
> diff --git a/arch/arm/dts/rk3399-evb-u-boot.dtsi b/arch/arm/dts/rk3399-evb-u-boot.dtsi
> index ccb33d34d1..5b50c5ba30 100644
> --- a/arch/arm/dts/rk3399-evb-u-boot.dtsi
> +++ b/arch/arm/dts/rk3399-evb-u-boot.dtsi
> @@ -11,3 +11,8 @@
>                 u-boot,spl-boot-order = &sdhci, &sdmmc;
>         };
>  };
> +
> +&rng {
> +       status = "okay";
> +};
> +
> diff --git a/arch/arm/dts/rk3399-u-boot.dtsi b/arch/arm/dts/rk3399-u-boot.dtsi
> index 8b857ccfc7..757b8c10a2 100644
> --- a/arch/arm/dts/rk3399-u-boot.dtsi
> +++ b/arch/arm/dts/rk3399-u-boot.dtsi
> @@ -25,6 +25,12 @@
>                 clock-names = "pclk_ddr_mon";
>         };
>
> +       rng: rng at ff8b8000 {
> +               compatible = "rockchip,cryptov1-rng";
> +               reg = <0x0 0xff8b8000 0x0 0x1000>;
> +               status = "disabled";
> +       };
> +
>         dmc: dmc {
>                 u-boot,dm-pre-reloc;
>                 compatible = "rockchip,rk3399-dmc";
> --
> 2.17.1
>
>
>