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mmc: omap_hsmmc: add DT property for max bus frequency

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Maximum bus frequency can be limited by external circuitry like level
shifters etc. Allow passing this value from DT.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Daniel Mack 2012-10-15 21:35:06 +05:30 committed by Chris Ball
parent 46b76035c1
commit d8714e87b6
1 changed files with 4 additions and 1 deletions
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5
drivers/mmc/host/omap_hsmmc.c
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@ -1679,7 +1679,7 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
{
struct omap_mmc_platform_data *pdata;
struct device_node *np = dev->of_node;
u32 bus_width;
u32 bus_width, max_freq;
pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
@ -1706,6 +1706,9 @@ static struct omap_mmc_platform_data *of_get_hsmmc_pdata(struct device *dev)
if (of_find_property(np, "ti,needs-special-reset", NULL))
pdata->slots[0].features |= HSMMC_HAS_UPDATED_RESET;
if (!of_property_read_u32(np, "max-frequency", &max_freq))
pdata->max_freq = max_freq;
return pdata;
}
#else