[PATCH 05/13] rockchip: rk3308: Enable random generator

[Jonas Karlman]

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 <jo...@kwiboo.se>
---
 arch/arm/dts/rk3308-u-boot.dtsi | 5 +++++
 arch/arm/mach-rockchip/Kconfig  | 2 ++
 2 files changed, 7 insertions(+)

diff --git a/arch/arm/dts/rk3308-u-boot.dtsi b/arch/arm/dts/rk3308-u-boot.dtsi
index 396fefb743cf..d6c71f62bc93 100644
--- a/arch/arm/dts/rk3308-u-boot.dtsi
+++ b/arch/arm/dts/rk3308-u-boot.dtsi
@@ -21,6 +21,11 @@
                        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 6e07a70bf4ae..fa5917236a43 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
-- 
2.43.2