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mmc: core: Improve documentation of MMC_CAP_HW_RESET 

MMC_CAP_HW_RESET means that the controller is capable of resetting the eMMC
device via RST_n signal, not a reset of the controller. Two drivers got
this wrong, so let's make it more clear.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20200821063533.3771-1-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Wolfram Sang 2020-08-21 08:35:33 +02:00 committed by Ulf Hansson
parent 46f4a69ec8
commit 6932794192
1 changed files with 2 additions and 1 deletions
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3
include/linux/mmc/host.h
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@ -163,6 +163,7 @@ struct mmc_host_ops {
int (*select_drive_strength)(struct mmc_card *card, int (*select_drive_strength)(struct mmc_card *card,
unsigned int max_dtr, int host_drv, unsigned int max_dtr, int host_drv,
int card_drv, int *drv_type); int card_drv, int *drv_type);
/* Reset the eMMC card via RST_n */
void (*hw_reset)(struct mmc_host *host); void (*hw_reset)(struct mmc_host *host);
void (*card_event)(struct mmc_host *host); void (*card_event)(struct mmc_host *host);
@ -346,7 +347,7 @@ struct mmc_host {
#define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */ #define MMC_CAP_CD_WAKE (1 << 28) /* Enable card detect wake */
#define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */ #define MMC_CAP_CMD_DURING_TFR (1 << 29) /* Commands during data transfer */
#define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */ #define MMC_CAP_CMD23 (1 << 30) /* CMD23 supported. */
#define MMC_CAP_HW_RESET (1 << 31) /* Hardware reset */ #define MMC_CAP_HW_RESET (1 << 31) /* Reset the eMMC card via RST_n */
u32 caps2; /* More host capabilities */ u32 caps2; /* More host capabilities */