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mmc: introduce mmc modes

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no functionnal changes.
In order to add the support for the high speed SD and MMC modes, it is
useful to track this information.

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Jean-Jacques Hiblot
2017-09-21 16:29:53 +02:00
committed by Jaehoon Chung
parent 7382e691ca
commit 35f9e196f9
3 changed files with 92 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
include/mmc.h
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@@ -52,12 +52,15 @@
#define MMC_VERSION_5_0 MAKE_MMC_VERSION(5, 0, 0)
#define MMC_VERSION_5_1 MAKE_MMC_VERSION(5, 1, 0)
#define MMC_MODE_HS (1 << 0)
#define MMC_MODE_HS_52MHz (1 << 1)
#define MMC_MODE_4BIT (1 << 2)
#define MMC_MODE_8BIT (1 << 3)
#define MMC_MODE_SPI (1 << 4)
#define MMC_MODE_DDR_52MHz (1 << 5)
#define MMC_CAP(mode) (1 << mode)
#define MMC_MODE_HS (MMC_CAP(MMC_HS) | MMC_CAP(SD_HS))
#define MMC_MODE_HS_52MHz MMC_CAP(MMC_HS_52)
#define MMC_MODE_DDR_52MHz MMC_CAP(MMC_DDR_52)
#define MMC_MODE_8BIT BIT(30)
#define MMC_MODE_4BIT BIT(29)
#define MMC_MODE_SPI BIT(27)
#define SD_DATA_4BIT 0x00040000
@@ -406,6 +409,24 @@ struct sd_ssr {
unsigned int erase_offset; /* In milliseconds */
};
enum bus_mode {
MMC_LEGACY,
SD_LEGACY,
MMC_HS,
SD_HS,
UHS_SDR12,
UHS_SDR25,
UHS_SDR50,
UHS_SDR104,
UHS_DDR50,
MMC_HS_52,
MMC_DDR_52,
MMC_HS_200,
MMC_MODES_END
};
const char *mmc_mode_name(enum bus_mode mode);
/*
* With CONFIG_DM_MMC enabled, struct mmc can be accessed from the MMC device
* with mmc_get_mmc_dev().
@@ -436,6 +457,7 @@ struct mmc {
u8 wr_rel_set;
u8 part_config;
uint tran_speed;
uint legacy_speed; /* speed for the legacy mode provided by the card */
uint read_bl_len;
uint write_bl_len;
uint erase_grp_size; /* in 512-byte sectors */
@@ -463,6 +485,7 @@ struct mmc {
#endif
#endif
u8 *ext_csd;
enum bus_mode selected_mode;
};
struct mmc_hwpart_conf {