arm: exynos: Enable TRNG on E850-96 board
Enable True Random Number Generator (TRNG) on E850-96 board. To do so:
1. Enable DM_RNG and RNG_EXYNOS for TARGET_E850_96
2. Add TRNG node to E850-96 device tree
3. Enable 'rng' command support for easy TRNG testing
TRNG node is already applied in Linux kernel device tree, but it hasn't
appeared in upstream dts yet. Add it in U-Boot override dtsi file
temporarily; it can be removed once it appears in upstream dts.
Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/arch/arm/mach-exynos/Kconfig b/arch/arm/mach-exynos/Kconfig
index cad8bb0..3fee5a4 100644
--- a/arch/arm/mach-exynos/Kconfig
+++ b/arch/arm/mach-exynos/Kconfig
@@ -250,6 +250,8 @@
select PINCTRL
select PINCTRL_EXYNOS850
imply OF_UPSTREAM
+ imply DM_RNG
+ imply RNG_EXYNOS
endchoice
endif