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-rw-r--r--drivers/mmc/core/host.c13
-rw-r--r--drivers/mmc/core/mmc.c11
2 files changed, 20 insertions, 4 deletions
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c
index e58be39b1568..35a9e4fd1a9f 100644
--- a/drivers/mmc/core/host.c
+++ b/drivers/mmc/core/host.c
@@ -179,7 +179,7 @@ static void mmc_retune_timer(unsigned long data)
int mmc_of_parse(struct mmc_host *host)
{
struct device *dev = host->parent;
- u32 bus_width;
+ u32 bus_width, drv_type;
int ret;
bool cd_cap_invert, cd_gpio_invert = false;
bool ro_cap_invert, ro_gpio_invert = false;
@@ -321,6 +321,15 @@ int mmc_of_parse(struct mmc_host *host)
if (device_property_read_bool(dev, "no-mmc"))
host->caps2 |= MMC_CAP2_NO_MMC;
+ /* Must be after "non-removable" check */
+ if (device_property_read_u32(dev, "fixed-emmc-driver-type", &drv_type) == 0) {
+ if (host->caps & MMC_CAP_NONREMOVABLE)
+ host->fixed_drv_type = drv_type;
+ else
+ dev_err(host->parent,
+ "can't use fixed driver type, media is removable\n");
+ }
+
host->dsr_req = !device_property_read_u32(dev, "dsr", &host->dsr);
if (host->dsr_req && (host->dsr & ~0xffff)) {
dev_err(host->parent,
@@ -393,6 +402,8 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->max_blk_size = 512;
host->max_blk_count = PAGE_SIZE / 512;
+ host->fixed_drv_type = -EINVAL;
+
return host;
}
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
index 066efbb89483..a552f61060d2 100644
--- a/drivers/mmc/core/mmc.c
+++ b/drivers/mmc/core/mmc.c
@@ -1291,13 +1291,18 @@ out_err:
static void mmc_select_driver_type(struct mmc_card *card)
{
int card_drv_type, drive_strength, drv_type;
+ int fixed_drv_type = card->host->fixed_drv_type;
card_drv_type = card->ext_csd.raw_driver_strength |
mmc_driver_type_mask(0);
- drive_strength = mmc_select_drive_strength(card,
- card->ext_csd.hs200_max_dtr,
- card_drv_type, &drv_type);
+ if (fixed_drv_type >= 0)
+ drive_strength = card_drv_type & mmc_driver_type_mask(fixed_drv_type)
+ ? fixed_drv_type : 0;
+ else
+ drive_strength = mmc_select_drive_strength(card,
+ card->ext_csd.hs200_max_dtr,
+ card_drv_type, &drv_type);
card->drive_strength = drive_strength;