dwmmc controller is supporting only one slot per a IP.
Even though DWMMC IP is provided the multiple slot, but there is no
usage in real world.
In mmc subsystem, not allow the multiple slot concept.
Then "num-slots" property is deprecated.
Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
---
drivers/mmc/host/dw_mmc.c | 21 ++++++++-------------
1 file changed, 8 insertions(+), 13 deletions(-)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 4a0841c..a66edd0 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2973,7 +2973,8 @@ static struct dw_mci_board *dw_mci_parse_dt(struct dw_mci *host)
}
/* find out number of slots supported */
- device_property_read_u32(dev, "num-slots", &pdata->num_slots);
+ if (device_property_read_u32(dev, "num-slots", &pdata->num_slots))
+ dev_info(dev, "'num-slots' was deprecated.\n");
if (device_property_read_u32(dev, "fifo-depth", &pdata->fifo_depth))
dev_info(dev,
@@ -3203,18 +3204,12 @@ int dw_mci_probe(struct dw_mci *host)
if (ret)
goto err_dmaunmap;
- if (host->pdata->num_slots)
- host->num_slots = host->pdata->num_slots;
- else
- host->num_slots = 1;
-
- if (host->num_slots < 1 ||
- host->num_slots > SDMMC_GET_SLOT_NUM(mci_readl(host, HCON))) {
- dev_err(host->dev,
- "Platform data must supply correct num_slots.\n");
- ret = -ENODEV;
- goto err_clk_ciu;
- }
+ /*
+ * Even though dwmmc IP is provided the multiple slots,
+ * there is no use case in mmc subsystem.
+ * dwmmc host controller needs to initialize the one slot per an IP.
+ */
+ host->num_slots = 1;
/*
* Enable interrupts for command done, data over, data empty,
--
2.10.2
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