From 98b927bb0c58549a76e9b9af19bbe344fc87757e Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Thu, 2 Jun 2016 07:55:15 +0200 Subject: ARM: multi_v7_defconfig: Enable s5p-secss driver The Exynos SoC provides a Security SubSystem block for accelerating some cryptographic operations. Enable the driver for it - s5p-secss to utilize the hardware acceleration. Currently the s5p-secss driver supports AES in CBC and ECB modes. However its usefulness could be doubted. Excerpt of tests on Odroid XU3 (Exynos5422), for 256 bit key, encryption, performance CPU freq governor: algorithm | block size [b] | average speed [MB/s] | cbc-aes-s5p | 16 | 11.5 | cbc-aes-s5p | 64 | 25.4 | cbc-aes-s5p | 256 | 41.0 | cbc-aes-s5p | 1024 | 47.4 | cbc-aes-s5p | 8192 | 49.0 | cbc(aes-generic) | 16 | 0.4 | cbc(aes-generic) | 64 | 1.8 | cbc(aes-generic) | 256 | 6.6 | cbc(aes-generic) | 1024 | 25.2 | cbc(aes-generic) | 8192 | 83.1 | Anyway enable the driver so it will get some testing coverage by community. Signed-off-by: Krzysztof Kozlowski Acked-by: Arnd Bergmann Reviewed-by: Javier Martinez Canillas --- arch/arm/configs/multi_v7_defconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'arch/arm/configs') diff --git a/arch/arm/configs/multi_v7_defconfig b/arch/arm/configs/multi_v7_defconfig index 1e94e179f783..29729448b9dc 100644 --- a/arch/arm/configs/multi_v7_defconfig +++ b/arch/arm/configs/multi_v7_defconfig @@ -873,6 +873,7 @@ CONFIG_KEYSTONE_IRQ=y CONFIG_HW_RANDOM=y CONFIG_HW_RANDOM_ST=y CONFIG_CRYPTO_DEV_MARVELL_CESA=m +CONFIG_CRYPTO_DEV_S5P=m CONFIG_CRYPTO_DEV_SUN4I_SS=m CONFIG_CRYPTO_DEV_ROCKCHIP=m CONFIG_ARM_CRYPTO=y -- cgit v1.2.3