From: Daniel Mack Date: Mon, 15 Oct 2012 16:05:06 +0000 (+0530) Subject: mmc: omap_hsmmc: add DT property for max bus frequency X-Git-Tag: firefly_0821_release~3680^2~1531^2~57 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=d8714e87b62b1c39ae8f3cef9a32121ad1c9a7ae;p=firefly-linux-kernel-4.4.55.git 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 Signed-off-by: Venkatraman S Signed-off-by: Chris Ball --- 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