mmc: sd: Add Extension memory addressing
SDUC memory addressing spans beyond 2TB and up to 128TB. Therefore, 38 bits are required to access the entire memory space of all sectors. Those extra 6 bits are to be carried by CMD22 prior of sending read/write/erase commands: CMD17, CMD18, CMD24, CMD25, CMD32, and CMD33. CMD22 will carry the higher order 6 bits, and must precedes any of the above commands even if it targets sector < 2TB. No error related to address or length is indicated in CMD22 but rather in the read/write command itself. Tested-by:Ricky WU <ricky_wu@realtek.com> Reviewed-by:
Adrian Hunter <adrian.hunter@intel.com> Signed-off-by:
Avri Altman <avri.altman@wdc.com> Link: https://lore.kernel.org/r/20241006051148.160278-3-avri.altman@wdc.com Signed-off-by:
Ulf Hansson <ulf.hansson@linaro.org>
Loading
Please sign in to comment