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| author | Michael Brown | 2009-05-28 15:45:32 +0200 |
|---|---|---|
| committer | Michael Brown | 2009-05-28 20:32:03 +0200 |
| commit | 92a9978b4403628345ca03ba4edc7641352460fa (patch) | |
| tree | 02626e7d3a3970b7b14cb4dd6f76211c447057cf /src/arch/i386/include/librm.h | |
| parent | [build] Add -fno-dwarf2-cfi-asm to CFLAGS if supported by the gcc in use (diff) | |
| download | ipxe-92a9978b4403628345ca03ba4edc7641352460fa.tar.gz ipxe-92a9978b4403628345ca03ba4edc7641352460fa.tar.xz ipxe-92a9978b4403628345ca03ba4edc7641352460fa.zip | |
[spi] Add address-length autodetection to the SPI bit-bashing code
Several SPI chips will respond to an SPI read command with a dummy
zero bit immediately prior to the first real data bit. This can be
used to autodetect the address length, provided that the command
length and data length are already known, and that the MISO data line
is tied high.
Tested-by: Thomas Miletich <thomas.miletich@gmail.com>
Debugged-by: Thomas Miletich <thomas.miletich@gmail.com>
Diffstat (limited to 'src/arch/i386/include/librm.h')
0 files changed, 0 insertions, 0 deletions