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| author | Juergen Kilb <J.Kilb@phytec.de> | 2011-09-09 14:10:54 +0200 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2011-09-12 12:31:08 +0200 |
| commit | b9126db43ffc30d86c53cb19c2f56920cd33f855 (patch) | |
| tree | deaa3a0b3a18329e5c9e5faaf18a1ace9928f54e | |
| parent | 9c2a52539828710fa239b9d772c3d3538a87355d (diff) | |
| download | barebox-b9126db43ffc30d86c53cb19c2f56920cd33f855.tar.gz barebox-b9126db43ffc30d86c53cb19c2f56920cd33f855.tar.xz | |
Add omap_hsmmc platform data.
Add platform data to specify maximum frequency of hsmmc interface
which can be restricted due to external level shifters.
Signed-off-by: Juergen Kilb <J.Kilb@phytec.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
| -rw-r--r-- | arch/arm/mach-omap/include/mach/omap_hsmmc.h | 28 | ||||
| -rw-r--r-- | drivers/mci/omap_hsmmc.c | 10 |
2 files changed, 37 insertions, 1 deletions
diff --git a/arch/arm/mach-omap/include/mach/omap_hsmmc.h b/arch/arm/mach-omap/include/mach/omap_hsmmc.h new file mode 100644 index 0000000000..a15f8e62a2 --- /dev/null +++ b/arch/arm/mach-omap/include/mach/omap_hsmmc.h @@ -0,0 +1,28 @@ +/** + * @file + * @brief This file contains exported structure for OMAP hsmmc + * + * FileName: include/asm-arm/arch-omap/omap_hsmmc.h + * + * OMAP3 and OMAP4 has a MMC/SD controller embedded. + * This file provides the platform data structure required to + * addapt to platform specialities. + */ +/* + * (C) Copyright 2011 + * Phytec Messtechnik GmbH, <www.phytec.de> + * Juergen Kilb <j.kilb@phytec.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#ifndef __ASM_OMAP_HSMMC_H +#define __ASM_OMAP_HSMMC_H + +/** omapmmc platform data structure */ +struct omap_hsmmc_platform_data { + unsigned f_max; /* host interface upper limit */ +}; +#endif /* __ASM_OMAP_HSMMC_H */ diff --git a/drivers/mci/omap_hsmmc.c b/drivers/mci/omap_hsmmc.c index 5fdf445c70..bf8d4a9796 100644 --- a/drivers/mci/omap_hsmmc.c +++ b/drivers/mci/omap_hsmmc.c @@ -31,6 +31,8 @@ #include <errno.h> #include <asm/io.h> +#include <mach/omap_hsmmc.h> + struct hsmmc { unsigned char res1[0x10]; unsigned int sysconfig; /* 0x10 */ @@ -549,6 +551,7 @@ static void mmc_set_ios(struct mci_host *mci, struct device_d *dev, static int omap_mmc_probe(struct device_d *dev) { struct omap_hsmmc *hsmmc; + struct omap_hsmmc_platform_data *pdata; hsmmc = xzalloc(sizeof(*hsmmc)); @@ -564,7 +567,12 @@ static int omap_mmc_probe(struct device_d *dev) hsmmc->mci.voltages = MMC_VDD_32_33 | MMC_VDD_33_34; hsmmc->mci.f_min = 400000; - hsmmc->mci.f_max = 52000000; + + pdata = (struct omap_hsmmc_platform_data *)dev->platform_data; + if (pdata->f_max) + hsmmc->mci.f_max = pdata->f_max; + else + hsmmc->mci.f_max = 52000000; mci_register(&hsmmc->mci); |