On 16.3.2022 13.09, Avri Altman wrote: >> Hi Avril & Adrian, >> Thanks for your efforts. Could we have an agreement now -- >> >> 1. enabling-cache and cmd23/reliable-write should be independent; >> >> Here's what I found in the spec JESD84-B51: >> > 6.6.31 Cache >> > Caching of data shall apply only for the single block >> > read/write(CMD17/24), pre-defined multiple block >> > read/write(CMD23+CMD18/25) and open ended multiple block >> > read/write(CMD18/25+CMD12) commands and excludes any other access >> > e.g., to the register space(e.g., CMD6). >> Which means with CMD18/25+CMD12 (without using CMD23), the cache can >> also be enabled. Maybe this could be an evidence of the independence >> between enabling-cache and cmd23/reliable-write? > Acked-by: Avri Altman <avri.altman@xxxxxxx> > > Thanks, > Avri > >> >> 2. We don't consider supporting SD in this change. >> >> > On 14/03/2022 19:10, Avri Altman wrote: >> >> Here is what our SD system guys wrote: >> >> " In SD we don’t support reliable write and this eMMC driver may not >> >> be utilizing the cache feature we added in SD5.0. >> >> The method of cache flush is different between SD and eMMC." >> >> >> >> So adding SD seems to be out of scope of this change. >> >> Is there anything else I can do about this patch? Thanks again. So we are not going to let the block layer know about SD cache? Or is it a separate change?
