]> git.sur5r.net Git - u-boot/commit
rockchip: clk: rk3368: define DMA1_SRST_REQ and DMA2_SRST_REQ
authorPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tue, 4 Jul 2017 12:50:11 +0000 (14:50 +0200)
committerPhilipp Tomsich <philipp.tomsich@theobroma-systems.com>
Sun, 13 Aug 2017 15:12:32 +0000 (17:12 +0200)
commit05c57e12d17b0a601b9a136ff03dac5b538c0845
treebc2bc887c1a1c4fb3f9a7d8c20d986eb768e5a4a
parenta00dfa042d3eecbe96308d87f38710e79a29e00c
rockchip: clk: rk3368: define DMA1_SRST_REQ and DMA2_SRST_REQ

On he RK3368, we need to temporarily disable security on the DMA
engines during TPL and SPL to allow the MMC host to DMA into DRAM.  To
do so, we need to reset the two DMA engines, which in turn requires
the DMA1_SRST_REQ and DMA2_SRST_REQ constants to refer to the
appropriate bits in the CRU.

As the ATF correctly initialises security (and only leaves EL3 after
doing so), this can not pose a security issue.

Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
arch/arm/include/asm/arch-rockchip/cru_rk3368.h