From: Jonas Karlman <jonas@kwiboo.se>
Date: Mon, 8 Apr 2024 18:14:02 +0000 (+0000)
Subject: rockchip: rk3308: Enable random generator
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=eaea9b48168f4e9be405f64be8fd7afc934525fa;p=u-boot.git

rockchip: rk3308: Enable random generator

The RK3308 SoC contain a crypto engine block that can generate random
numbers.

Add rng node to soc u-boot.dtsi and enable Kconfig options to take
advantage of the random generator.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Quentin Schulz <quentin.schulz@theobroma-systems.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
---

diff --git a/arch/arm/dts/rk3308-u-boot.dtsi b/arch/arm/dts/rk3308-u-boot.dtsi
index 436f66d1b8..fa31c838d3 100644
--- a/arch/arm/dts/rk3308-u-boot.dtsi
+++ b/arch/arm/dts/rk3308-u-boot.dtsi
@@ -26,6 +26,11 @@
 			reg = <0x07 0x10>;
 		};
 	};
+
+	rng: rng@ff2f0000 {
+		compatible = "rockchip,cryptov2-rng";
+		reg = <0x0 0xff2f0000 0x0 0x4000>;
+	};
 };
 
 &cru {
diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 2707d3fdfb..c17dbb615c 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -162,9 +162,11 @@ config ROCKCHIP_RK3308
 	select SPL_LOAD_FIT
 	imply ARMV8_CRYPTO
 	imply ARMV8_SET_SMPEN
+	imply DM_RNG
 	imply LEGACY_IMAGE_FORMAT
 	imply MISC
 	imply MISC_INIT_R
+	imply RNG_ROCKCHIP
 	imply ROCKCHIP_COMMON_BOARD
 	imply ROCKCHIP_OTP
 	imply SPL_CLK