[PATCH v2 0/4] rockchip: Update rng compatible for RK356x and RK3588

[Peter Robinson]

Hi Jonas,

Sorry for the late reply here.

On Tue, 8 Apr 2025 at 23:37, Jonas Karlman <jonas at kwiboo.se> wrote:
>
> This series adds support for and updates the random generator compatible
> used for RK356x and RK3588.
>
> The RK356x rng node is already part of dts/upstream so the rng node in
> u-boot.dtsi is removed, and because it is not enabled for rk3566 it gets
> enabled in u-boot.dtsi to restore its use in U-Boot.

It's explicitly disabled in the upstream kernel because it doesn't
produce actual random data and hence upstream believe it shouldn't be
used, there's a couple of threads on it.

Have we tested to see if the data produced in U-Boot from the HW
exhibits a different outcome? I wonder if Kever is aware of the kernel
issue and can provide input.

Peter

> The RK3588 rng node is added into dts/upstream DT by picking a commit
> from devicetree-rebasing v6.15-rc1-dts and the rng node in u-boot.dtsi
> is removed.
>
> Changes in v2:
> - Split rng driver and DT change into separate patches for RK356x
> - Pick RK3588 rng node commit from devicetree-rebasing v6.15-rc1-dts
>
> Jonas Karlman (3):
>   rng: rockchip_rng: Add compatible for RK3568
>   rockchip: rk356x: Remove rng node from u-boot.dtsi
>   rng: rockchip_rng: Update compatible for RK3588
>
> Nicolas Frattaroli (1):
>   arm64: dts: rockchip: Add rng node to RK3588
>
>  arch/arm/dts/rk356x-u-boot.dtsi                  | 9 ++++-----
>  arch/arm/dts/rk3588s-u-boot.dtsi                 | 5 -----
>  drivers/rng/rockchip_rng.c                       | 6 +++++-
>  dts/upstream/src/arm64/rockchip/rk3588-base.dtsi | 8 ++++++++
>  4 files changed, 17 insertions(+), 11 deletions(-)
>
> --
> 2.49.0
>