diff options
| author | Daniel Mack <zonque@gmail.com> | 2012-10-15 20:05:06 +0400 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-12-06 22:54:40 +0400 |
| commit | d8714e87b62b1c39ae8f3cef9a32121ad1c9a7ae (patch) | |
| tree | 2a4a47cd97189e144ec7ae654f684c108606af69 /drivers | |
| parent | 46b76035c12140caeda64dfd2557557263a30039 (diff) | |
| download | linux-d8714e87b62b1c39ae8f3cef9a32121ad1c9a7ae.tar.xz | |
mmc: omap_hsmmc: add DT property for max bus frequency
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/host/omap_hsmmc.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index 813ae0ac6286..0b5e7ab92ef1 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -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 |