1 /* linux/arch/arm/mach-s5pv310/setup-sdhci.c
3 * Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
4 * http://www.samsung.com/
6 * S5PV310 - Helper functions for settign up SDHCI device(s) (HSMMC)
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/delay.h>
14 #include <linux/kernel.h>
15 #include <linux/types.h>
16 #include <linux/interrupt.h>
17 #include <linux/platform_device.h>
20 #include <linux/mmc/card.h>
21 #include <linux/mmc/host.h>
23 #include <plat/regs-sdhci.h>
24 #include <mach/regs-clock.h>
26 /* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */
28 char *s5pv310_hsmmc_clksrcs[4] = {
29 // [0] = "hsmmc", /* HCLK */
30 // [1] = "hsmmc", /* HCLK */
31 [2] = "sclk_mmc", /* mmc_bus */
35 void s5pv310_setup_sdhci_cfg_card(struct platform_device *dev,
38 struct mmc_card *card)
42 /* don't need to alter anything acording to card-type */
44 ctrl2 = __raw_readl(r + S3C_SDHCI_CONTROL2);
45 ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
46 ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR |
47 S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK |
48 S3C_SDHCI_CTRL2_ENFBCLKRX |
49 S3C_SDHCI_CTRL2_DFCNT_NONE |
50 S3C_SDHCI_CTRL2_ENCLKOUTHOLD);
52 if (ios->clock < 25 * 1000000)
53 ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 |
54 S3C_SDHCI_CTRL3_FCSEL2 |
55 S3C_SDHCI_CTRL3_FCSEL1 |
56 S3C_SDHCI_CTRL3_FCSEL0);
58 ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0);
60 __raw_writel(ctrl2, r + S3C_SDHCI_CONTROL2);
61 __raw_writel(ctrl3, r + S3C_SDHCI_CONTROL3);