diff options
| author | Anton Vorontsov <avorontsov@ru.mvista.com> | 2009-09-22 16:45:13 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:37 -0700 |
| commit | 81b39802468fe4bf5c6b038837319b608acfdd3e (patch) | |
| tree | aa5e95bcee95cb4dd7a4811abd8e740f4ef4a958 /drivers/mmc/host/sdhci-of.c | |
| parent | c08592698534f390afe726c38301aa8f1620c361 (diff) | |
sdhci-of: fix high-speed cards recognition
eSDHC fails to recognize some SDHS cards, throwing timeout errors:
mmc0: error -110 whilst initialising SD card
That's because we calculate timeout value in a wrong way: on eSDHC hosts
the timeout clock is derivied from the SD clock, which is set dynamically.
As David Vrabel suggested, deriving timeout clock from SD clock is a
common scheme, so let's implement DATA_TIMEOUT_USES_SDCLK quirk and use it
for eSDHC hosts.
Also, from now on we don't need esdhc_get_timeout_clock() callback, so
remove it.
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Pierre Ossman <pierre@ossman.eu>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: David Vrabel <david.vrabel@csr.com>
Cc: Ben Dooks <ben@fluff.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/mmc/host/sdhci-of.c')
| -rw-r--r-- | drivers/mmc/host/sdhci-of.c | 9 |
1 files changed, 1 insertions, 8 deletions
diff --git a/drivers/mmc/host/sdhci-of.c b/drivers/mmc/host/sdhci-of.c index 3439fc11890..56041dc74ce 100644 --- a/drivers/mmc/host/sdhci-of.c +++ b/drivers/mmc/host/sdhci-of.c @@ -172,19 +172,13 @@ static unsigned int esdhc_get_min_clock(struct sdhci_host *host) return of_host->clock / 256 / 16; } -static unsigned int esdhc_get_timeout_clock(struct sdhci_host *host) -{ - struct sdhci_of_host *of_host = sdhci_priv(host); - - return of_host->clock / 1000; -} - static struct sdhci_of_data sdhci_esdhc = { .quirks = SDHCI_QUIRK_FORCE_BLK_SZ_2048 | SDHCI_QUIRK_BROKEN_CARD_DETECTION | SDHCI_QUIRK_INVERTED_WRITE_PROTECT | SDHCI_QUIRK_NO_BUSY_IRQ | SDHCI_QUIRK_NONSTANDARD_CLOCK | + SDHCI_QUIRK_DATA_TIMEOUT_USES_SDCLK | SDHCI_QUIRK_PIO_NEEDS_DELAY | SDHCI_QUIRK_RESTORE_IRQS_AFTER_RESET | SDHCI_QUIRK_NO_CARD_NO_RESET, @@ -199,7 +193,6 @@ static struct sdhci_of_data sdhci_esdhc = { .enable_dma = esdhc_enable_dma, .get_max_clock = esdhc_get_max_clock, .get_min_clock = esdhc_get_min_clock, - .get_timeout_clock = esdhc_get_timeout_clock, }, }; |