diff options
| author | Daniel Mack <zonque@gmail.com> | 2012-02-19 13:20:33 +0100 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-03-27 18:19:56 +0200 |
| commit | d418ed87c4e3ecf45d42718c4ead91180997681f (patch) | |
| tree | 8da29767609df1b6eced0f1121a0f1e8325e3327 | |
| parent | mmc: atmel-mci: fix typo (diff) | |
| download | linux-d418ed87c4e3ecf45d42718c4ead91180997681f.tar.xz linux-d418ed87c4e3ecf45d42718c4ead91180997681f.zip | |
ARM: OMAP: hsmmc: add max_freq field
External circuitry like level shifters may limit the maximum operation
speed of the hsmmc controller. Add a field to struct omap2_hsmmc_info
so boards can adjust the setting on demand.
Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
| -rw-r--r-- | arch/arm/mach-omap2/hsmmc.c | 1 | ||||
| -rw-r--r-- | arch/arm/mach-omap2/hsmmc.h | 2 | ||||
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 8 |
3 files changed, 9 insertions, 2 deletions
diff --git a/arch/arm/mach-omap2/hsmmc.c b/arch/arm/mach-omap2/hsmmc.c index 19dd1657245c..9abab0f52f79 100644 --- a/arch/arm/mach-omap2/hsmmc.c +++ b/arch/arm/mach-omap2/hsmmc.c @@ -316,6 +316,7 @@ static int omap_hsmmc_pdata_init(struct omap2_hsmmc_info *c, mmc->slots[0].pm_caps = c->pm_caps; mmc->slots[0].internal_clock = !c->ext_clock; mmc->dma_mask = 0xffffffff; + mmc->max_freq = c->max_freq; if (cpu_is_omap44xx()) mmc->reg_offset = OMAP4_MMC_REG_OFFSET; else diff --git a/arch/arm/mach-omap2/hsmmc.h b/arch/arm/mach-omap2/hsmmc.h index c4409730c4bb..0017ae24995e 100644 --- a/arch/arm/mach-omap2/hsmmc.h +++ b/arch/arm/mach-omap2/hsmmc.h @@ -26,6 +26,8 @@ struct omap2_hsmmc_info { char *name; /* or NULL for default */ struct device *dev; /* returned: pointer to mmc adapter */ int ocr_mask; /* temporary HACK */ + int max_freq; /* maximum clock, if constrained by external + * circuitry, or 0 for default */ /* Remux (pad configuration) when powering on/off */ void (*remux)(struct device *dev, int slot, int power_on); /* init some special card */ diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index fd0c661bbad3..36e7f5bc58a3 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -1912,8 +1912,12 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) if (mmc_slot(host).vcc_aux_disable_is_sleep) mmc_slot(host).no_off = 1; - mmc->f_min = OMAP_MMC_MIN_CLOCK; - mmc->f_max = OMAP_MMC_MAX_CLOCK; + mmc->f_min = OMAP_MMC_MIN_CLOCK; + + if (pdata->max_freq > 0) + mmc->f_max = pdata->max_freq; + else + mmc->f_max = OMAP_MMC_MAX_CLOCK; spin_lock_init(&host->irq_lock); |