mmc: sdhci: Add 32-bit block count support for v4 mode

Browse source

Host Controller Version 4.10 re-defines SDMA System Address register
as 32-bit Block Count for v4 mode, and SDMA uses ADMA System
Address register (05Fh-058h) instead if v4 mode is enabled. Also
when using 32-bit block count, 16-bit block count register need
to be set to zero.

Since using 32-bit Block Count would cause problems for auto-cmd23,
it can be chosen via host->quirk2.

Signed-off-by: Chunyan Zhang <zhang.chunyan@linaro.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

...

This commit is contained in:

Chunyan Zhang 2018-08-30 16:21:41 +08:00 • committed by Ulf Hansson

parent 685e444bba

commit e65953d4a1

2 changed files with 21 additions and 1 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

drivers/mmc/host/sdhci.c

View file

8

drivers/mmc/host/sdhci.h

View file