Re: [Buildroot] [PATCH] board/friendlyarm/nanopi-r3s: rk3566-nanopi-r3s.dts: enable hw random

[Baruch Siach via buildroot <buildroot@buildroot.org>]

Hi Sergey,

On Tue, Feb 25 2025, Sergey Kuzminov wrote:
> This patch enables the hardware random number generator in the device tree.
> Without it, the entropy level in the Linux kernel increases very slowly.
> To check the entropy level: cat /proc/sys/kernel/random/entropy_avail
>
> Signed-off-by: Sergey Kuzminov <kuzminov.sergey81@gmail.com>
> ---
>  ...001-rk3566-nanopi-r3s.dts-enable-rng.patch | 30 +++++++++++++++++++
>  1 file changed, 30 insertions(+)
>  create mode 100644 board/friendlyarm/nanopi-r3s/patches/linux/0001-rk3566-nanopi-r3s.dts-enable-rng.patch
>
> diff --git
> a/board/friendlyarm/nanopi-r3s/patches/linux/0001-rk3566-nanopi-r3s.dts-enable-rng.patch
> b/board/friendlyarm/nanopi-r3s/patches/linux/0001-rk3566-nanopi-r3s.dts-enable-rng.patch
> new file mode 100644
> index 0000000000..b376004377
> --- /dev/null
> +++ b/board/friendlyarm/nanopi-r3s/patches/linux/0001-rk3566-nanopi-r3s.dts-enable-rng.patch
> @@ -0,0 +1,30 @@
> +From 284e6683b4a0ee6b1fd22ccd34785e1f2d58c115 Mon Sep 17 00:00:00 2001
> +From: Sergey Kuzminov <kuzminov.sergey81@gmail.com>
> +Date: Tue, 25 Feb 2025 19:49:00 +0300
> +Subject: [PATCH] rk3566-nanopi-r3s.dts: enable rng
> +
> +This patch enables the hardware random number generator in the device tree.
> +Without it, the entropy level in the Linux kernel increases very slowly.
> +To check the entropy level: cat /proc/sys/kernel/random/entropy_avail
> +
> +Signed-off-by: Sergey Kuzminov <kuzminov.sergey81@gmail.com>
> +Upstream: Not applicable, Buildroot specific.

What makes this patch Buildroot specific?

baruch

> +---
> + arch/arm64/boot/dts/rockchip/rk3566-nanopi-r3s.dts | 4 ++++
> + 1 file changed, 4 insertions(+)
> +
> +diff --git a/arch/arm64/boot/dts/rockchip/rk3566-nanopi-r3s.dts b/arch/arm64/boot/dts/rockchip/rk3566-nanopi-r3s.dts
> +index fb1f65c86883..a89bdbf71e12 100644
> +--- a/arch/arm64/boot/dts/rockchip/rk3566-nanopi-r3s.dts
> ++++ b/arch/arm64/boot/dts/rockchip/rk3566-nanopi-r3s.dts
> +@@ -552,3 +552,7 @@ &vop {
> + &vop_mmu {
> + 	status = "okay";
> + };
> ++
> ++&rng {
> ++	status = "okay";
> ++};
> +-- 
> +2.45.3
> +

-- 
                                                     ~. .~   Tk Open Systems
=}------------------------------------------------ooO--U--Ooo------------{=
   - baruch@tkos.co.il - tel: +972.52.368.4656, http://www.tkos.co.il -
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