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>

2 files changed, 3 insertions, 0 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 */