diff options
| author | Andy Green <andy@openmoko.com> | 2008-11-19 17:09:58 +0000 |
|---|---|---|
| committer | Andy Green <agreen@pads.home.warmcat.com> | 2008-11-19 17:09:58 +0000 |
| commit | 4687c8c75b6ae4fb71c3821d116bcbc9379886ec (patch) | |
| tree | 96350d574ef5d2649bac2aac4d825f42a8223cca /drivers/mfd | |
| parent | 7238eb667b1b4622e37e4a2b40caf9c49312c6bf (diff) | |
fix-glamo-mci-ensure-more-than-74-clocks-after-power.patch
We are meant to run SD_CLK a little while after power-on for the SD
Card, but with the no idle clock changes we didn't take care about it.
This makes us sleep a little bit before disabling clock if we just
powered up the SD Card.
Signed-off-by: Andy Green <andy@openmoko.com>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/glamo/glamo-mci.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/mfd/glamo/glamo-mci.c b/drivers/mfd/glamo/glamo-mci.c index 505be5f89b6..0d829557439 100644 --- a/drivers/mfd/glamo/glamo-mci.c +++ b/drivers/mfd/glamo/glamo-mci.c @@ -684,6 +684,7 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) struct glamo_mci_host *host = mmc_priv(mmc); int n = 0; int div; + int powering = 0; /* Set power */ switch(ios->power_mode) { @@ -699,6 +700,7 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) glamo_engine_enable(glamo_mci_def_pdata.pglamo, GLAMO_ENGINE_MMC); glamo_mci_reset(host); + powering = 1; break; case MMC_POWER_OFF: @@ -716,6 +718,12 @@ static void glamo_mci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) host->real_rate = __glamo_mci_set_card_clock(host, ios->clock, &div); host->clk_div = div; + /* after power-up, we are meant to give it >= 74 clocks so it can + * initialize itself. Doubt any modern cards need it but anyway... + */ + if (powering) + msleep(1); + if (!sd_idleclk) /* stop the clock to card, because we are idle until transfer */ __glamo_mci_fix_card_div(host, -1); |