incubator-nuttx/arch/risc-v
Eero Nurkkala 737d4bf418 risc-v/mpfs: emmcsd: enforce HS DDR mode
Previously, address 0x03b70000u was written with shift bits
that only changed the bit width, not the mode. HS mode is
changed via 0x03B90100, which is required, according to Jedec
specs, for DDR mode. HS mode was not applied before. Enforce
DDR mode (50 MHz) for now.

The real boost, however, comes from removing the DMA limitation
at 0x08xxxxxx address space, which now seems unnecessary.

Signed-off-by: Eero Nurkkala <eero.nurkkala@offcode.fi>
2024-09-25 23:58:08 +08:00
..
include arch: use up_current_regs/up_set_current_regs replace CURRENT_REGS 2024-09-13 23:18:58 +08:00
src risc-v/mpfs: emmcsd: enforce HS DDR mode 2024-09-25 23:58:08 +08:00
CMakeLists.txt cmake:init RISC-V cmake qemu-rv build 2023-10-26 21:01:46 +08:00
Kconfig risc-v: Add a new option to control exception reason 2024-09-17 15:26:06 -03:00