On 29 March 2017 at 13:20, Philipp Tomsich philipp.tomsich@theobroma-systems.com wrote:
The RK3399 hangs during DMA of the Designware MMC controller, when performing DMA-based transactions in SPL due to the DDR security settings left behind by the BootROM (i.e. accesses to the first MB of DRAM are restricted... however, the DMA is likely to target this first MB, as it transfers from/to the stack).
System security is not affected, as the final security configuration is performed by the ATF, which is executed after the SPL stage.
With this fix in place, we can now drop 'fifo-mode' in the DTS for the RK3399-Q7 (Puma).
Signed-off-by: Philipp Tomsich philipp.tomsich@theobroma-systems.com
Changes in v3:
- replaces the work-around (i.e. falling back to fifo-mode in SPL) with a permanent fix
arch/arm/mach-rockchip/rk3399-board-spl.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
Acked-by: Simon Glass sjg@chromium.org