Hi Jaehoon
On 07/15/2016 07:24 AM, Jaehoon Chung wrote:
This flag needs to use the trim/discard/erase commands.
dwmmc controller enables this flag by default.
Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
Reviewed-by: Shawn Lin <shawn.lin@xxxxxxxxxxxxxx>
---
drivers/mmc/host/dw_mmc.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c
index 9fab5ed..d16de19 100644
--- a/drivers/mmc/host/dw_mmc.c
+++ b/drivers/mmc/host/dw_mmc.c
@@ -2604,6 +2604,12 @@ static int dw_mci_init_slot(struct dw_mci *host, unsigned int id)
if (host->pdata->caps)
mmc->caps = host->pdata->caps;
+ /*
+ * Support MMC_CAP_ERASE by default.
+ * It needs to use trim/discard/erase commands.
+ */
+ mmc->caps |= MMC_CAP_ERASE;
+
Just a thought, probably this should be move to mmc_of_parse() and let
the board/platform configure this via device-tree.
if (host->pdata->pm_caps)
mmc->pm_caps = host->pdata->pm_caps;
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