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Commit d418ed87 authored by Daniel Mack's avatar Daniel Mack Committed by Chris Ball
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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: default avatarDaniel Mack <zonque@gmail.com>
Acked-by: default avatarTony Lindgren <tony@atomide.com>
Signed-off-by: default avatarChris Ball <cjb@laptop.org>
parent b81cfc41

arch/arm/mach-omap2/hsmmc.c

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/arm/mach-omap2/hsmmc.h

+2 −0
Original line number Diff line number Diff line
@@ -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 */

drivers/mmc/host/omap_hsmmc.c

+6 −2
Original line number Diff line number Diff line
@@ -1913,6 +1913,10 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev) 
		mmc_slot(host).no_off = 1;



	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);