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path: root/drivers/mmc/host/mmci.c
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Diffstat (limited to 'drivers/mmc/host/mmci.c')
-rw-r--r--drivers/mmc/host/mmci.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c
index 84c103a7ee1..ff115d92088 100644
--- a/drivers/mmc/host/mmci.c
+++ b/drivers/mmc/host/mmci.c
@@ -55,14 +55,16 @@ static void mmci_set_clkreg(struct mmci_host *host, unsigned int desired)
55 host->cclk = host->mclk / (2 * (clk + 1)); 55 host->cclk = host->mclk / (2 * (clk + 1));
56 } 56 }
57 if (host->hw_designer == AMBA_VENDOR_ST) 57 if (host->hw_designer == AMBA_VENDOR_ST)
58 clk |= MCI_FCEN; /* Bug fix in ST IP block */ 58 clk |= MCI_ST_FCEN; /* Bug fix in ST IP block */
59 clk |= MCI_CLK_ENABLE; 59 clk |= MCI_CLK_ENABLE;
60 /* This hasn't proven to be worthwhile */ 60 /* This hasn't proven to be worthwhile */
61 /* clk |= MCI_CLK_PWRSAVE; */ 61 /* clk |= MCI_CLK_PWRSAVE; */
62 } 62 }
63 63
64 if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_4) 64 if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_4)
65 clk |= MCI_WIDE_BUS; 65 clk |= MCI_4BIT_BUS;
66 if (host->mmc->ios.bus_width == MMC_BUS_WIDTH_8)
67 clk |= MCI_ST_8BIT_BUS;
66 68
67 writel(clk, host->base + MMCICLOCK); 69 writel(clk, host->base + MMCICLOCK);
68} 70}
@@ -629,7 +631,18 @@ static int __devinit mmci_probe(struct amba_device *dev, struct amba_id *id)
629 631
630 mmc->ops = &mmci_ops; 632 mmc->ops = &mmci_ops;
631 mmc->f_min = (host->mclk + 511) / 512; 633 mmc->f_min = (host->mclk + 511) / 512;
632 mmc->f_max = min(host->mclk, fmax); 634 /*
635 * If the platform data supplies a maximum operating
636 * frequency, this takes precedence. Else, we fall back
637 * to using the module parameter, which has a (low)
638 * default value in case it is not specified. Either
639 * value must not exceed the clock rate into the block,
640 * of course.
641 */
642 if (plat->f_max)
643 mmc->f_max = min(host->mclk, plat->f_max);
644 else
645 mmc->f_max = min(host->mclk, fmax);
633 dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max); 646 dev_dbg(mmc_dev(mmc), "clocking block at %u Hz\n", mmc->f_max);
634 647
635#ifdef CONFIG_REGULATOR 648#ifdef CONFIG_REGULATOR