Commit 4f3d3e9b authored by Andrei Warkentin's avatar Andrei Warkentin Committed by Chris Ball

mmc: sdhci: Auto-CMD23 fixes.

Fixes bugs in Auto-CMD23 feature enable decision. Auto-CMD23
should be enabled if host is >= v3, and SDMA is not in use.

USE_ADMA | USE_SDMA | Auto-CMD23
---------+----------+-----------
    0    |    0     |     1
---------+----------+-----------
    0    |    1     |     0
---------+----------+-----------
    1    |    0     |     1
---------+----------+-----------
    1    |    1     |     1
Signed-off-by: default avatarAndrei Warkentin <andreiw@motorola.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent 8edf6371
......@@ -2494,9 +2494,9 @@ int sdhci_add_host(struct sdhci_host *host)
host->flags |= SDHCI_AUTO_CMD12;
/* Auto-CMD23 stuff only works in ADMA or PIO. */
if ((host->version == SDHCI_SPEC_300) &&
if ((host->version >= SDHCI_SPEC_300) &&
((host->flags & SDHCI_USE_ADMA) ||
!(host->flags & SDHCI_REQ_USE_DMA))) {
!(host->flags & SDHCI_USE_SDMA))) {
host->flags |= SDHCI_AUTO_CMD23;
DBG("%s: Auto-CMD23 available\n", mmc_hostname(mmc));
} else {
......
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